Banksia ilicifolia

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Holly-leaved banksia
Banksia ilicifolia marchetti latebud2 email.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Banksia
Subgenus: Banksia subg. Isostylis
Species:
B. ilicifolia
Binomial name
Banksia ilicifolia
Synonyms [1]
  • Banksia aquifolium Lindl.
  • Banksia ilicifolia R.Br. var. ilicifolia
  • Banksia ilicifolia var. integrifolia Benth.
  • Sirmuellera ilicifolia(R.Br.) Kuntze

Banksia ilicifolia, commonly known as holly-leaved banksia, [2] is a tree in the family Proteaceae. Endemic to southwest Western Australia, it belongs to Banksia subg. Isostylis, a subgenus of three closely related Banksia species with inflorescences that are dome-shaped heads rather than characteristic Banksia flower spikes. It is generally a tree up to 10 metres (33 ft) tall with a columnar or irregular habit. Both the scientific and common names arise from the similarity of its foliage to that of the English holly Ilex aquifolium ; the glossy green leaves generally have very prickly serrated margins, although some plants lack toothed leaves. The inflorescences are initially yellow but become red-tinged with maturity; this acts as a signal to alert birds that the flowers have opened and nectar is available.

Contents

Robert Brown described Banksia ilicifolia in 1810. Although Banksia ilicifolia is variable in growth form, with low coastal shrubby forms on the south coast near Albany, there are no recognised varieties as such. Distributed broadly, the species is restricted to sandy soils. Unlike its close relatives which are killed by fire and repopulate from seed, Banksia ilicifolia regenerates after bushfire by regrowing from epicormic buds under its bark. It is rarely cultivated.

Description

A large tree, near Waroona Banksia ilicifolia marchetti email.jpg
A large tree, near Waroona

Banksia ilicifolia is a variable species. It usually grows as an erect tree up to 10 metres (33 ft) in height, but some populations along the south coast consist of small trees or even spreading shrubs. [3] It is generally a 5 metres (16 ft) high small tree in the Margaret River region. [4] The leaves arising from many short branchlets make a dense foliage close to the trunk and branches. [5]

Banksia ilicifolia has a stout trunk up to 50 cm (19.5 in) in diameter, and rough, fibrous, grey bark which is up to 2 cm (1 in) thick. [3] New growth takes place mainly in summer. [6] Young branchlets are covered in hair which they lose after two or three years. Leaves grow on stems less than two years of age, and are arranged in a scattered pattern along the stems although crowded at the apices (branchlet tips). Resembling those of holly, its leaves are a dark shiny green colour, and variously obovate (egg-shaped), elliptic, truncate or undulate (wavy) in shape, and 3–10 cm (1.2–3.9 in) long. Generally serrated, the leaf edges have up to 14 prickly "teeth" separated by broad v- to u-shaped sinuses along each side, although some leaves have margins lacking teeth. The leaves sit atop petioles 0.3–1 cm (0.1–0.4 in) in length. The upper and undersurface of the leaves are initially covered in fine hairs but become smooth with maturity. Flowering takes place from late winter to early summer. The inflorescences are dome-shaped flower heads rather than spikes as many other banksias, and arise from stems that are around a year old. No lateral branchlets grow outwards from the node where the flower head arises. [3] The flower heads measure 7–9 cm (2.8–3.5 in) in diameter, and bear 60 to 100 individual flowers. The inflorescences pass through three colour phases, being initially yellow, then pink, then finally red, before falling away from the head. One to three follicles develop from fertilised flowers, and remain embedded in the woody base of the flower head. Each follicle bears one or two seeds. [7]

The cotyledon leaves are a dull green with no visible nerves or markings. Transversely elliptic in shape, they measure 8 to 13 mm long by 12 to 18 mm wide and range from convex to concave. The pointed spreading auricles are 1.5 mm long. The cotyledon leaves sit atop the stout hypocotyl, which is green and smooth. The seedling leaves are crowded above the cotyledons. Resembling those of B. coccinea , they are lined with triangular lobes or "teeth" (with a u- or v-shaped sinus) and obovate to broadly lanceolate in shape. The first set of leaves measure 1 to 2.5 cm (0.4 to 1.0 in) in length and around 1 cm (0.4 in) in width, with three or four lobes in each margin. Both upper and lower seedling leaf surfaces are covered in spreading hairs, as is the seedling stem. Juvenile leaves are obovate to truncate or mucronate with triangular lobes and measure 4 to 10 cm (1.6 to 3.9 in) long by 1.5 to 3.5 cm (0.6 to 1.4 in) wide. These lobes are smaller toward the petiole and apex of the leaf. [3]

In the Margaret River region, Banksia ilicifolia has been confused with Banksia sessilis var. cordata as both have prickly foliage and domed flowerheads. However, the former grows on deep sand while the latter grows on grey sand over limestone ridges. The embedded follicles of B. ilicifolia compared with the loose ones of B. sessilis are another distinguishing feature. [4]

Taxonomy

Banksia ilicifolia1 orig.JPG
Banksia ilicifolia, unusual all-yellow flowers (after anthesis), near Albany
Banksia ilicifolia inflorescence 2.jpg
More usual reddish flowers, Perth
Banksia ilicifolia bark.jpg
Rough bark, Perth

Specimens of B. ilicifolia were first collected by Scottish surgeon Archibald Menzies during the visit of the Vancouver Expedition to King George Sound in September and October 1791, but this collection did not result in the description of the species. [3] It was next collected by Robert Brown in December 1801, during the visit of HMS Investigator to King George Sound. [8] The species was also drawn by the expedition's botanical artist Ferdinand Bauer. Like nearly all of Bauer's field drawings of Proteaceae, the original field sketch of B. ilicifolia was destroyed in a Hofburg fire in 1945. [9] A painting based on the drawing survives, however, at the Natural History Museum in London. [10]

Brown eventually published the species in his 1810 work On the natural order of plants called Proteaceae . [3] The specific name is derived from the Latin words ilex 'holly' and folium 'leaf', hence 'holly-leaved'. [4] In 1810, Brown published Prodromus Florae Novae Hollandiae et Insulae Van Diemen in which he arranged the genus into two unranked groups. B. ilicifolia was placed alone in Isostylis because of its unusual dome-shaped inflorescences. All other species were placed in Banksia verae , the 'true banksias', because they have the elongate flower spike then considered characteristic of Banksia. [11]

The shrubby, coastal ecotype was published as a separate species Banksia aquifolium by John Lindley in his 1840 A Sketch of the Vegetation of the Swan River Colony , but this is now regarded as a taxonomic synonym of B. ilicifolia. [3] A specimen collected by Ludwig Preiss on 13 April 1839 from coastal sands in Perth was described as Banksia ilicifolia var integrifolia in Bentham's Flora Australiensis in 1870, [12] but has not been recognised since. [3] B. ilicifolia is variable in form, although the variations are not consistent enough to warrant recognising infraspecific taxa. Adult leaf margins can be entire or serrate (like holly), and can both be present on the one plant. Populations from the south coast have larger flowers and leaves, but some trees in the north of the range also have large flowers and leaves. [3]

In 1891, Otto Kuntze, in his Revisio Generum Plantarum , rejected the generic name Banksia L.f., on the grounds that the name Banksia had previously been published in 1776 as Banksia J.R.Forst & G.Forst, referring to the genus now known as Pimelea . Kuntze proposed Sirmuellera as an alternative, referring to this species as Sirmuellera candolleana. [13] This application of the principle of priority was largely ignored by Kuntze's contemporaries, [14] and Banksia L.f. was formally conserved and Sirmuellera rejected in 1940. [15]

Infrageneric placement

The unranked group Isostylis, with its one species, was reclassified as a section in the 1856 arrangement of Carl Meissner, [16] and 1870 arrangement of George Bentham. [12] In his 1981 revision of the genus, Alex George reclassified the group as a subgenus—Banksia subg. Isostylis—defined by the dome-shaped flower heads, with B. ilicifolia joined by newly described species B. cuneata and later B. oligantha. [7] Banksia ilicifolia is the only common member of that subgenus; the two other species are rare and threatened, [17] and are protected under the Environment Protection and Biodiversity Conservation Act 1999. Relationships between B. ilicifolia and the other members of B. subg. Isostylis still remain unclear. Although DNA studies found B. cuneata to be the most basal of the three species, [18] a 2004 study of genetic divergence within the subgenus yielded both other possibilities: some analyses suggested B. ilicifolia as basal, while others suggested B. oligantha. Biogeographical factors suggest that B. ilicifolia would be the most basal of the three species: it occurs in the High Rainfall Zone where relictual species are most common, whereas the others are restricted to the Transitional Rainfall Zone, where more recently evolved species are most common. [17]

A 1996 cladistic analysis of the genus by botanists Kevin Thiele and Pauline Ladiges assumed the status B. subg. Isostylis as a subgenus and earliest offshoot within Banksia, so George's placement of B. ilicifolia was retained in their arrangement. [19] The placement of B. ilicifolia was unchanged in George's 1999 arrangement, and can be summarised as follows: [7]

Banksia
B. subg. Banksia (3 sections, 11 series, 73 species, 11 subspecies, 14 varieties)
B. subg. Isostylis
B. ilicifolia
B. oligantha
B. cuneata

Since 1998, American botanist Austin Mast and co-authors have been publishing results of ongoing cladistic analyses of DNA sequence data for Banksia and Dryandra . Their analyses suggest a phylogeny that differs greatly from George's taxonomic arrangement. Banksia ilicifolia and B. oligantha form a clade, that is they are each other's closest relative, with Banksia cuneata resolving as the next closest relative, suggesting a monophyletic B. subg. Isostylis; but the clade appears fairly derived (that it, it evolved relatively recently), suggesting that B. subg. Isostylis may not merit subgeneric rank. [18] [20] [21] Early in 2007, Mast and Thiele rearranged the genus Banksia by merging Dryandra into it, and published B. subg. Spathulatae for the taxa having spoon-shaped cotyledons; thus B. subg. Banksia was redefined as encompassing taxa lacking spoon-shaped cotyledons. They foreshadowed publishing a full arrangement once DNA sampling of Dryandra was complete. In the meantime, if Mast and Thiele's nomenclatural changes are taken as an interim arrangement, then B. ilicifolia is placed in B. subg. Banksia. [22]

Distribution and habitat

Distribution of Banksia ilicifolia Banksiailicifoliamap.png
Distribution of Banksia ilicifolia

A relatively common species, the holly-leaved banksia is widely distributed within southwest Western Australia. It occurs within 70 km (43 mi) of the coast, from Mount Lesueur to Augusta, and then east to the Cordinup River east of Albany. [6] In the Margaret River region, it grows on yellow sand plains behind the Leeuwin-Naturaliste Ridge. [4] Almost all occurrences are to the west (seaward) side of the Darling Scarp, although there are two outlying populations – one near Collie east of Bunbury and the other in the Tonbridge-Lake Muir area near Manjimup. Along the south coast, there is one inland population at Sheepwash Nature Reserve near Narrikup northwest of Albany. [6] The annual rainfall over its distribution ranges from 600 to 1,100 mm (24 to 43 in). [23]

Banksia ilicifolia grows exclusively on sandy soils; its range ends where heavy soils are evident. [6] It especially favours low-lying areas. It generally grows in open woodland alongside such trees as jarrah ( Eucalyptus marginata ), candlestick banksia ( Banksia attenuata ), firewood banksia ( B. menziesii ) and Western Australian Christmas tree ( Nuytsia floribunda ). [3] [6] Along the south coast, it grows in heath, [6] sometimes forming stands with bull banksia ( B. grandis ). [24]

The holly-leaved banksia gives its name to the Banksia ilicifolia woodlands ('community type 22'), a possibly threatened ecological community found in the Bassendean and Spearwood systems in the central Swan Coastal Plain north of Rockingham. These are low-lying areas which are seasonally waterlogged. The habitat is open woodland with an open understorey, and such trees as B. ilicifolia, B. attenuata and stout paperbark ( Melaleuca preissiana ). [25]

Banksia ilicifolia is a component of the critically endangered Assemblage of Tumulus Springs (organic mound springs) of the Swan Coastal Plain community north of Perth, which is characterised by a permanently moist peaty soil. The dominant trees include Melaleuca preissiana, swamp banksia ( B. littoralis ) and flooded gum ( Eucalyptus rudis ), with understorey ferns such as bracken ( Pteridium esculentum ) and Cyclosorus interruptus , and shrubs swamp peppermint ( Taxandria linearifolia ) and Astartea fascicularis . [26]

Ecology

Banksia ilicifolia has been recorded as a source of nectar for the honey possum (Tarsipes rostratus) in winter to early summer (May to December), from field studies in the Scott National Park, replaced by Adenanthos meisneri in the summer. [27] Several honeyeater species visit and pollinate Banksia ilicifolia. The western spinebill (Acanthorhynchus superciliosus) in particular prefers this species over other banksias. [28]

More shrubby form in heathland near Albany Banksia ilicifolia bonsai1 orig.JPG
More shrubby form in heathland near Albany

A field study carried out at Jandakot Airport south of Perth and published in 1988 found that birds and insects overwhelmingly preferred visiting yellow-coloured flowerheads. The species recorded include several species of honeyeater, including the red wattlebird (Anthochaera carunculata), western wattlebird (A. lunulata), western spinebill, brown honeyeater (Lichmera indistincta), New Holland honeyeater (Phylidonyris novaehollandiae), white-cheeked honeyeater (P. nigra), singing honeyeater, (Gavicalis virescens), as well as the twenty-eight parrot (Barnardius zonarius semitorquatus), [6] two species of native bee of the genus Leioproctus , a beetle of the genus Liparetrus , and ant species Iridomyrmex conifer . The yellow flowerheads are also the ones that bear the most nectar, and are greatly preferred by red wattlebirds. [29]

An analysis of the invertebrate population in the canopy of Banksia woodland found that mites and ticks (Acari), beetles (Coleoptera) and ants, bees and wasps (Hymenoptera) predominated overall, with the three orders also common on B. ilicifolia, although outnumbered by thrips (Thysanoptera). More arthropods on B. ilicifolia might be related to a higher nutrient (potassium) level in the leaves. Lower overall numbers of invertebrates on Banksia species were thought to be related to the presence of insectivorous birds. [5]

Hand-pollination experiments on wild populations near Perth showed that Banksia ilicifolia is self-compatible, although progeny produced have less vigour and seed production is reduced. [30] Further experiments showed that seedlings of outcrossing with plants greater than 30 kilometres (19 mi) apart are more vigorous and adaptable, suggesting that plants breeding within small fragmented populations are subject to reduced vigour and genetic inbreeding. [31]

Banksia ilicifolia regenerates after bushfire by regrowing from epicormic shoots under its bark. Follicles open and release seeds after several years. [3] It is weakly serotinous, like eight other Banksia species, all of which tend to occur in Western Australia's southwestern corner. [32] The other two species of the subgenus Isostylis are killed by fire and regenerate by seed. [17]

All banksias have developed proteoid or cluster roots in response to the nutrient-poor conditions of Australian soils (particularly lacking in phosphorus). [33] The plant develops masses of fine lateral roots which form a mat-like structure underneath the soil surface. These enable it to extract nutrients as efficiently possible out of the soil. A study of three co-occurring species in Banksia woodland in southwestern Australia—Banksia menziesii, B. attenuata and B. ilicifolia—found that all three develop fresh roots in September after winter rainfall, and that the bacteria populations associated with the root systems of B. menziesii differ from the other two, and that they also change depending on the age of the roots. [34] Along with its shallow lateral roots, Banksia ilicifolia sinks one or more deep taproots seeking the water table. [35] It is an obligate phreatophyte, that is, it is reliant upon accessing groundwater for its survival; it is more closely tied to the water table than the co-occurring B. menziesii and B. attenuata, and must remain in areas where the depth of the water table is less than 8 m (26 ft) below the surface. [36] Recent falls of the water table on the Swan Coastal Plain from use of the Gnangara Mound aquifer for Perth's water supply combined with years of below average rainfall have seen the population and vigour of Banksia ilicifolia fall considerably (more so than other banksia species) since the mid-1960s. [37]

Like many Western Australian banksias, Banksia ilicifolia has been shown to be highly sensitive to dieback from the soil-borne water mould Phytophthora cinnamomi . [38] A study of Banksia attenuata woodland 400 km (250 mi) southeast of Perth across 16 years and following a wave of P. cinnamomi infestation showed that B. ilicifolia populations were present but significantly reduced in diseased areas. [39] Specimens in coastal dune vegetation were reported killed by Armillaria luteobubalina , with mycelial sheaths of the fungus beneath the bark of the root collar. [40]

Cultivation

Rarely cultivated, [41] Banksia ilicifolia requires a sunny position and sandy well-drained soil to do well. A slow-growing plant, it takes up to ten years to flower from seed. The glossy green foliage and long flowering period, combined with prominently displayed flowers give it horticultural potential, although its prickly foliage makes fallen leaves a problem if planted near lawns or walkways. [23] Seeds do not require any treatment, and take 22 to 41 days to germinate. [42] Difficulties in collection and low seed set make seed relatively expensive. [24] Seeds are often eaten by insects before they can be collected. [43]

Related Research Articles

<i>Banksia <span style="font-style:normal;">subg.</span> Isostylis</i> Subgenus in the family Proteaceae from southwest Western Australia

Banksia subg. Isostylis is a subgenus of Banksia. It contains three closely related species, all of which occur only in Southwest Western Australia. Members of subgenus Isostylis have dome-shaped flower heads that are superficially similar to those of B. ser. Dryandra, but structurally more like reduced versions of the "flower spikes" characteristic of most other Banksia taxa.

<i>Banksia cuneata</i> Endangered species of flowering plant

Banksia cuneata, commonly known as matchstick banksia or Quairading banksia, is an endangered species of flowering plant in the family Proteaceae. Endemic to southwest Western Australia, it belongs to Banksia subg. Isostylis, a sub-genus of three closely related Banksia species with inflorescences or flower clusters that are dome-shaped heads rather than characteristic Banksia flower spikes. A shrub or small tree up to 5 m (16 ft) high, it has prickly foliage and pink and cream flowers. The common name Matchstick Banksia arises from the blooms in late bud, the individual buds of which resemble matchsticks. The species is pollinated by honeyeaters (Meliphagidae).

Banksia oligantha, commonly known as Wagin banksia, is an endangered species in the plant family Proteaceae endemic to south west Western Australia. It belongs to Banksia subg. Isostylis, a subgenus of three closely related Banksia species with dome-shaped heads as inflorescences, rather than characteristic Banksia flower spikes. A shrub or small tree up to 4 m (13 ft) high, it has prickly foliage and pink and cream flowerheads which appear in late Spring.

<i>Banksia serrata</i> Species of tree native to eastern Australia

Banksia serrata, commonly known as the saw banksia, the old man banksia, the saw-tooth banksia or the red honeysuckle and as wiriyagan by the Cadigal people, is a species of woody shrub or tree of the genus Banksia, in the family Proteaceae. Native to the east coast of Australia, it is found from Queensland to Victoria with outlying populations on Tasmania and Flinders Island. Commonly growing as a gnarled tree up to 16 m (50 ft) in height, it can be much smaller in more exposed areas. This Banksia species has wrinkled grey bark, shiny dark green serrated leaves and large yellow or greyish-yellow flower spikes appearing over summer. The flower spikes, or inflorescences, turn grey as they age and pollinated flowers develop into large, grey, woody seed pods called follicles.

<i>Banksia attenuata</i> Species of plant in the family Proteaceae found across much of the southwest of Western Australia

Banksia attenuata, commonly known as the candlestick banksia, slender banksia, or biara to the Noongar people, is a species of plant in the family Proteaceae. Commonly a tree, it reaches 10 m (33 ft) high, but it is often a shrub in drier areas 0.4 to 2 m high. It has long, narrow, serrated leaves and bright yellow inflorescences, or flower spikes, held above the foliage, which appear in spring and summer. The flower spikes age to grey and swell with the development of the woody follicles. The candlestick banksia is found across much of the southwest of Western Australia, from north of Kalbarri National Park down to Cape Leeuwin and across to Fitzgerald River National Park.

<i>Banksia menziesii</i> Species of plant

Banksia menziesii, commonly known as firewood banksia, is a species of flowering plant in the family Proteaceae. It is a gnarled tree up to 10 m (33 ft) tall, or a lower spreading 1–3 m (3.3–9.8 ft) shrub in the more northern parts of its range. The serrated leaves are dull green with new growth a paler grey green. The prominent autumn and winter inflorescences are often two-coloured red or pink and yellow, and their colour has given rise to more unusual common names such as port wine banksia and strawberry banksia. Yellow blooms are rarely seen.

Taxonomy of <i>Banksia</i> Classification of the plant genus Banksia

As with other flowering plants, the taxonomy of Banksia has traditionally been based on anatomical and morphological properties of the Banksia flower, fruiting structure and seed, along with secondary characteristics such as leaf structure and growth habit. Increasingly, molecular evidence from DNA is providing important new insights into relationships within the genus and between this and other genera in the Proteaceae.

<i>Banksia aculeata</i> Shrub of the family Proteaceae native to the southwest of Western Australia.

Banksia aculeata, commonly known as prickly banksia, is a species of plant of the family Proteaceae native to the Stirling Range in the southwest of Western Australia. A shrub up to 2 m (7 ft) tall, it has dense foliage and leaves with very prickly serrated margins. Its unusual pinkish, pendent (hanging) flower spikes, known as inflorescences, are generally hidden in the foliage and appear during the early summer. Although it was collected by the naturalist James Drummond in the 1840s, Banksia aculeata was not formally described until 1981, by Alex George in his monograph of the genus.

<i>Banksia burdettii</i> Species of shrub in the family Proteaceae native to Western Australia

Banksia burdettii, commonly known as Burdett's banksia, is a species of shrub or tree of the genus Banksia in the family Proteaceae. It occurs on sandplain country north of Gingin, Western Australia. Growing to 4 m (13 ft) in height, it has long serrated leaves and large, bright flower spikes, initially white before opening to a bright orange, that appear mainly in late summer. Edmund Gilbert Baker described B. burdettii in 1934, naming it after its collector, W. Burdett.

<i>Banksia dentata</i> Tree species

Banksia dentata, commonly known as the tropical banksia, is a species of tree in the family Proteaceae. It occurs across northern Australia, southern New Guinea and the Aru Islands. Growing as a gnarled tree to 7 m (23 ft) high, it has large green leaves up to 22 cm (8.7 in) long with dentate margins. The cylindrical yellow inflorescences, up to 13 cm (5.1 in) high, appear between November and May, attracting various species of honeyeaters, sunbirds, the sugar glider and a variety of insects. Flowers fall off the ageing spikes, which swell and develop follicles containing up to two viable seeds each.

<i>Banksia elegans</i> Species of shrub in the family Proteaceae endemic to Western Australia

Banksia elegans, commonly known as the elegant banksia, is a species of woody shrub that is endemic to a relatively small area of Western Australia. Reaching 4 m (13 ft) high, it is a suckering shrub that rarely reproduces by seed. The round to oval yellow flower spikes appear in spring and summer. Swiss botanist Carl Meissner described Banksia elegans in 1856. It is most closely related to the three species in the subgenus Isostylis.

<i>Banksia media</i> Shrub native to Western Australia

Banksia media, the southern plains banksia or golden stalk banksia, is a species of flowering plant in the family Proteaceae. An evergreen shrub, it occurs on the south coast of Western Australia between Albany and Israelite Bay, where it is a common plant. A many-branched bush with wedge-shaped serrated leaves and large golden-yellow flower spikes, known as inflorescences, it grows up to 10 metres (30 ft) high.

<i>Banksia oblongifolia</i> Species of plant

Banksia oblongifolia, commonly known as the fern-leaved, dwarf or rusty banksia, is a species in the plant genus Banksia. Found along the eastern coast of Australia from Wollongong, New South Wales in the south to Rockhampton, Queensland in the north, it generally grows in sandy soils in heath, open forest or swamp margins and wet areas. A many-stemmed shrub up to 3 m (9.8 ft) high, it has leathery serrated leaves and rusty-coloured new growth. The yellow flower spikes, known as inflorescences, most commonly appear in autumn and early winter. Up to 80 follicles, or seed pods, develop on the spikes after flowering. Banksia oblongifolia resprouts from its woody lignotuber after bushfires, and the seed pods open and release seed when burnt, the seed germinating and growing on burnt ground. Some plants grow between fires from seed shed spontaneously.

<i>Banksia paludosa</i> Shrub in the family Proteaceae native to New South Wales, Australia

Banksia paludosa, commonly known as the marsh or swamp banksia, is a species of shrub in the plant genus Banksia. It is native to New South Wales, Australia, where it is found between Sydney and Batemans Bay, with an isolated population further south around Eden. There are two recognised subspecies, the nominate of which is a spreading shrub to 1.5 m (4.9 ft) in height, and subsp. astrolux is a taller shrub to 5 m (16 ft) high found only in Nattai National Park.

<i>Banksia plagiocarpa</i> Species of shrub in the family Proteaceae native to Queensland

Banksia plagiocarpa, commonly known as Dallachy's blue banksia, blue banksia or Hichinbrook banksia, is a species of shrub or tree in the plant genus Banksia. It occurs only on Hinchinbrook Island, Queensland and the immediately adjacent mainland. First collected in 1867, Banksia plagiocarpa was not described until 1981, when Alex George named it in his monograph of the genus Banksia. Genetic studies show it to be related to Banksia aquilonia, Banksia oblongifolia and Banksia robur.

<i>Banksia saxicola</i> Species of shrub in the family Proteaceae native to Victoria (Australia)

Banksia saxicola, the rock banksia or Grampians banksia, is a species of tree or shrub in the family Proteaceae. It occurs in Victoria in two distinct populations, one in The Grampians and the other on Wilsons Promontory. Formerly considered to be a form of B. integrifolia, it was described as a distinct species by Alex George in 1981. It is most closely related to Banksia marginata.

<i>Banksia telmatiaea</i> Australian shrub that grows in marshes and swamps

Banksia telmatiaea, commonly known as swamp fox banksia or rarely marsh banksia, is a shrub that grows in marshes and swamps along the lower west coast of Australia. It grows as an upright bush up to 2 metres tall, with narrow leaves and a pale brown flower spike, which can produce profuse quantities of nectar. First collected in the 1840s, it was not published as a separate species until 1981; as with several other similar species it was previously included in B. sphaerocarpa.

<i>Banksia blechnifolia</i> Proteaceae of Western Australia

Banksia blechnifolia is a species of flowering plant in the genus Banksia found in Western Australia. It was first described by Victorian state botanist Ferdinand von Mueller in 1864, and no subspecies are recognised. It gained its specific name as its leaves are reminiscent of a fern (Blechnum). B. blechnifolia is one of several closely related species that grow as prostrate shrubs, with horizontal stems and leathery, upright leaves. The red-brown flower spikes, known as inflorescences, are up to 20 centimetres (8 in) high and appear from September to November in the Australian spring. As the spikes age, each turns grey and develops as many as 25 woody seed pods, known as follicles.

<i>Banksia aquilonia</i> Tree in the family Proteaceae native to north Queensland

Banksia aquilonia, commonly known as the northern banksia and jingana, is a tree in the family Proteaceae and is endemic to north Queensland on Australia's northeastern coastline. With an average height of 8 m (26 ft), it has narrow glossy green leaves up to 20 cm (7.9 in) long and 6 to 10 cm high pale yellow flower spikes, known as inflorescences, appearing in autumn. As the spikes age, their flowers fall off and they develop up to 50 follicles, each of which contains two seeds.

Robert Brown's taxonomic arrangement of Banksia was published in his book of 1810, Prodromus Florae Novae Hollandiae et Insulae Van Diemen, and expanded in the supplement to that publication, Supplementum Primum Prodromi Florae Novae Hollandiae, in 1830. It was the first survey of Banksia species to be published, and included descriptions of a number of previously undescribed species.

References

  1. 1 2 "Banksia ilicifolia". Australian Plant Census. Retrieved 5 May 2020.
  2. ↑ "Banksia ilicifolia". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. 1 2 3 4 5 6 7 8 9 10 11 George, Alex S. (1981). "The genus Banksia L.f. (Proteaceae)". Nuytsia . 3 (3): 239–473. ISSN   0085-4417.
  4. 1 2 3 4 Scott, Jane; Negus, Patricia (2005) [2002]. Field Guide to Wildflowers of Australia's South West: Augusta-Margaret River Region. Fremantle, Western Australia: Cape to Cape Publishing. p. 60. ISBN   978-0-9577729-7-7.
  5. 1 2 Tassone, R.A.; Maier, J.D. (1997). "Abundance of Arthropods in Tree Canopies of Banksia Woodland on the Swan Coastal Plain". Journal of the Royal Society of Western Australia. 80: 281–86.
  6. 1 2 3 4 5 6 7 Taylor, Anne; Hopper, Stephen (1988). The Banksia Atlas (Australian Flora and Fauna Series Number 8). Canberra, Australian Capital Territory: Australian Government Publishing Service. pp. 120–21. ISBN   978-0-644-07124-6.
  7. 1 2 3 George, A. S. (1999). "Banksia". In Wilson, Annette (ed.). Flora of Australia: Volume 17B: Proteaceae 3: Hakea to Dryandra. Collingwood, Victoria: CSIRO Publishing / Australian Biological Resources Study. pp. 175–251. ISBN   978-0-643-06454-6.
  8. ↑ "Banksia ilicifolia R.Br". Robert Brown's Australian Botanical Specimens, 1801–1805 at the BM. Perth, Western Australia: FloraBase, Western Australian Herbarium. Archived from the original on 26 May 2021. Retrieved 3 June 2012.
  9. ↑ Pignatti-Wikus, Erika; Reidl-Dorn, Christa; Mabberley, David (2000). "Ferdinand Bauer's field drawings of endemic Western Australian plants made at King George Sound and Lucky Bay, December 1801 – January 1802. I: Families Brassicaceae, Goodenaceae p.p., Lentibulariaceae, Campanulaceae p.p., Orchidaceae, Pittosporaceae p.p., Rutaceae p.p., Stylidaceae, Xyridaceae". Rendiconti Lincei: Scienze Fisiche e Naturali. s.9, v.11 (2): 69–109.
  10. ↑ "Banksia illicifolia, holly-leaved banksia". London, United Kingdom: National History Museum. Archived from the original on 4 August 2016. Retrieved 3 June 2012. Published in Mabberley, David J.; Moore, David T. (1999). "Catalogue of the Holdings in the Natural History Museum (London) of the Australian Botanical Drawings of Ferdinand Bauer (1760–1826) and Cognate Materials Relating to the Investigator Voyage of 1801–1805". Bulletin of the Natural History Museum. 29 (2): 81–226. and in George, Alex (2011). A Banksia Album: Two Hundred Years of Botanical Art. Canberra, Australian Capital Territory: National Library of Australia. p. 45. ISBN   978-0-642-27739-8.
  11. ↑ Brown, Robert (1810). Prodromus Florae Novae Hollandiae et Insulae Van Diemen. London, United Kingdom: Taylor. p. 396.
  12. 1 2 Bentham, George (1870). "Banksia". Flora Australiensis . Vol. 5: Myoporineae to Proteaceae. London, United Kingdom: L. Reeve & Co. pp. 541–62.
  13. ↑ Kuntze, Otto (1891). Revisio generum plantarum. Vol. 2. Leipzig: Arthur Felix. pp. 581–582.
  14. ↑ Rehder, A.; Weatherby, C. A.; Mansfeld, R.; Green, M. L. (1935). "Conservation of Later Generic Homonyms". Bulletin of Miscellaneous Information (Royal Botanic Gardens, Kew). 1935 (6/9): 368. doi:10.2307/4107078. JSTOR   4107078.
  15. ↑ Sprague, T. A. (1940). "Additional Nomina Generica Conservanda (Pteridophyta and Phanerogamae)". Royal Botanic Gardens, Kew. 1940 (3): 99. doi:10.2307/4111642. JSTOR   4111642.
  16. ↑ Meissner, Carl (1856). "Proteaceae". In de Candolle, A. P. (ed.). Prodromus systematis naturalis regni vegetabilis . Vol. 14. Paris, France: Sumptibus Sociorum Treuttel et Wurtz.
  17. 1 2 3 Broadhurst, Linda M.; Coates, David J. (2004). "Genetic Divergence Among and Diversity Within Two Rare Banksia Species and their Common Close Relative in the Subgenus Isostylis R.Br. (Proteaceae)". Conservation Genetics. 5 (6): 837–46. doi:10.1007/s10592-004-5268-9. S2CID   39559876.
  18. 1 2 Mast, Austin R.; Givnish, Thomas J. (2002). "Historical Biogeography and the Origin of Stomatal Distributions in Banksia and Dryandra (Proteaceae) Based on Their cpDNA Phylogeny". American Journal of Botany . 89 (8): 1311–23. doi: 10.3732/ajb.89.8.1311 . ISSN   0002-9122. PMID   21665734.
  19. ↑ Thiele, Kevin; Ladiges, Pauline Y. (1996). "A Cladistic Analysis of Banksia (Proteaceae)". Australian Systematic Botany . 9 (5): 661–733. doi:10.1071/SB9960661.
  20. ↑ Mast, Austin R. (1998). "Molecular Systematics of Subtribe Banksiinae (Banksia and Dryandra; Proteaceae) Based on cpDNA and nrDNA Sequence Data: Implications for Taxonomy and Biogeography". Australian Systematic Botany. 11 (4): 321–42. doi:10.1071/SB97026.
  21. ↑ Mast, Austin R.; Jones, Eric H.; Havery, Shawn P. (2005). "An Assessment of Old and New DNA Sequence Evidence for the Paraphyly of Banksia with Respect to Dryandra (Proteaceae)". Australian Systematic Botany. 18 (1): 75–88. doi:10.1071/SB04015.
  22. ↑ Mast, Austin R.; Thiele, Kevin (2007). "The Transfer of Dryandra R.Br. to Banksia L.f. (Proteaceae)". Australian Systematic Botany. 20: 63–71. doi:10.1071/SB06016.
  23. 1 2 George, Alex S. (1996). The Banksia Book (3rd ed.). Kenthurst, New South Wales: Kangaroo Press. pp. 229–30. ISBN   978-0-86417-818-3.
  24. 1 2 Mansergh, Nicholas (1999). "Banksia ilicifolia". Australian Plants Online. Australian Native Plants Society (Australia). Retrieved 1 June 2012.
  25. ↑ Species and Communities Branch (13 April 2012). "Priority Threatened Ecological Communities for Western Australia: Version 17". Perth, Western Australia: Department of Environment and Conservation, Western Australian Government. Retrieved 1 June 2012.
  26. ↑ English, Val; Blyth, John (February 2000). "Assemblages of Organic Mound (Tumulus) Springs of the Swan Coastal Plain Interim Recovery Plan 2000–2003". Threatened species & ecological communities. Canberra, Australian Capital Territory: Department of Sustainability, Environment, Water, Population and Communities, Australian Government. Retrieved 3 June 2012.
  27. ↑ Bradshaw, S. Don; Phillips, Ryan D.; Tomlinson, Sean; Holley, Rebecca J.; Jennings, Sarah; Bradshaw, Felicity J. (2007). "Ecology of the Honey Possum, Tarsipes rostratus, in Scott National Park, Western Australia". Australian Mammalogy. 29 (1): 25–38. doi:10.1071/AM07003.
  28. ↑ Whelan, Robert J., Robert J.; Burbidge, Allan H. (1980). "Flowering Phenology, Seed Set and Bird Pollination of Five Western Australian Banksia species". Austral Ecology. 5 (1): 1–7. doi:10.1111/j.1442-9993.1980.tb01225.x.
  29. ↑ Lamont, Byron B.; Collins, Brian G. (1988). "Flower Colour Change in Banksia ilicifolia: A Signal for Pollinators". Austral Ecology. 13 (2): 129–35. doi:10.1111/j.1442-9993.1988.tb00962.x.
  30. ↑ Heliyanto, Bambang; Veneklaas, Erik J.; Lambers, Hans; Krauss, Siegfried L. (2005). "Preferential outcrossing in Banksia ilicifolia (Proteaceae)". Australian Journal of Botany. 53 (2): 163–70. doi:10.1071/BT04011.
  31. ↑ Heliyanto, B.; Krauss, S. L.; Lambers, H.; Cawthray, G. R.; Veneklaas, E. J. (2006). "Increased ecological amplitude through heterosis following wide outcrossing in Banksia ilicifolia R.Br. (Proteaceae)". Journal of Evolutionary Biology. 19 (4): 1327–38. doi: 10.1111/j.1420-9101.2005.01067.x . PMID   16780533. S2CID   26367650.
  32. ↑ Lamont, Byron B.; Connell, S. W. (1996). "Biogeography of Banksia in southwestern Australia". Journal of Biogeography . 23 (3): 295–309. doi:10.1046/j.1365-2699.1996.00027.x.
  33. ↑ Beadle, Noel C. (1968). "Some aspects of the ecology and physiology of Australian xeromorphic plants". Australian Journal of Science. 30: 348–55.
  34. ↑ Marschner, Petra; Grierson, Pauline F.; Rengel, Zed (2006). "Microbial community composition and functioning in the rhizosphere of three Banksia species in native woodland in Western Australia". Applied Soil Ecology. 28 (3): 191–201. doi:10.1016/j.apsoil.2004.09.001.
  35. ↑ Pate, J. S.; Bell, T. L. (1999). "Application of the ecosystem mimic concept to the species-rich Banksia woodlands of Western Australia". Agroforestry Systems. 45 (1–3): 303–41. doi:10.1023/A:1006218310248. S2CID   25474362.
  36. ↑ Canham, Caroline H.; Froend Raymond H.; Stock, William H. (2005). "Water Stress Vulnerability of Four Banksia Species in Contrasting Ecohydrological Habitats on the Gnangara Mound, Western Australia". Plant, Cell and Environment. 32 (1): 64–72. doi: 10.1111/j.1365-3040.2008.01904.x . PMID   19021880.
  37. ↑ Groom, P. K.; Froend, R. H.; Mattiske, E. M.; Gurner, R. P. (2001). "Long-term Changes in Vigour and Distribution of Banksia and Melaleuca Overstorey Species on the Swan Coastal Plain". Journal of the Royal Society of Western Australia. 84: 63–69.
  38. ↑ McCredie, T. A.; Dixon, K. W.; Sivasithamparam, K. (1985). "Variability in the Resistance of Banksia L.f. Species to Phytophthora cinnamomi Rands". Australian Journal of Botany . 33 (6): 629–37. doi:10.1071/BT9850629.
  39. ↑ Bishop, C.L.; Wardell-Johnson, G.W.; Williams, M.R. (2010). "Community-level changes in Banksia woodland following plant pathogen invasion in the Southwest Australian Floristic Region". Journal of Vegetation Science. 21 (5): 888–98. doi:10.1111/j.1654-1103.2010.01194.x.
  40. ↑ Shearer, Bryan L.; Crane, C.E.; Fairman, Richard G.; Grant, M.J. (1998). "Susceptibility of Plant Species in Coastal Dune Vegetation of South-western Australia to Killing by Armillaria luteobubalina". Australian Journal of Botany. 46 (2): 321–34. doi:10.1071/BT97012.
  41. ↑ Elliot, Rodger W.; Jones, David L.; Blake, Trevor (1985). Encyclopaedia of Australian Plants Suitable for Cultivation. Vol. 2. Port Melbourne, Victoria: Lothian Press. p. 293. ISBN   978-0-85091-143-5.
  42. ↑ Sweedman, Luke; Merritt, David, eds. (2006). Australian seeds: a guide to their collection, identification and biology . Collingwood, Victoria: CSIRO Publishing. p.  203. ISBN   978-0-643-09298-3.
  43. ↑ Collins, Kevin; Collins, Kathy; George, Alex S. (2008). Banksias. Melbourne, Victoria: Bloomings Books. pp. 218–19. ISBN   978-1-876473-68-6.

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