Isopogon anethifolius

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Isopogon anethifolius
Narrow Leaf Drumstick - Isopogon anethifolius (7970118766).jpg
Flowers emerging from base of cone
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Isopogon
Species:
I. anethifolius
Binomial name
Isopogon anethifolius
Isopogonanethifoliusrgemap.png
Range in New South Wales (in green)
Synonyms [1]
List
    • Atylus anethifolius(Salisb.) Kuntze
    • Isopogon anethifolius(Salisb.) R.Br. isonym
    • Isopogon confertus Gand.
    • Isopogon eriophorusGand.
    • Isopogon globosusGand.
    • Isopogon virgatulusMcGill. orth. var.
    • Isopogon virgulatusGand.
    • Protea anethifoliaSalisb.
    • Protea furcellata Sm. ex Meisn. nom. inval., pro syn.
    • Protea rangiferinaMeisn.

Isopogon anethifolius, commonly known as narrow-leaf drumsticks [2] or narrow-leafed drumsticks, [3] is a shrub in the family Proteaceae. The species is found only in coastal areas near Sydney in New South Wales, and to the immediate west. It occurs naturally in woodland, open forest and heathland on sandstone soils. An upright shrub, it can reach to 3 m (9.8 ft) in height, with terete leaves that are divided and narrow. The yellow flowers appear in the Spring, from September to December, and are prominently displayed. They are followed by round grey cones, which give the plant its common name of drumsticks. The small hairy seeds are found in the old flower parts.

Contents

Isopogon anethifolius regenerates after bushfire by resprouting from its woody base, known as a lignotuber, as well as from seed. It was described by Richard Salisbury in 1796, and was first grown in the United Kingdom the same year. One of the easiest members of the genus Isopogon to grow in cultivation, I. anethifolius grows readily in the garden if located in a sunny or part-shaded spot with sandy soil and good drainage.

Description

Habitat (Botany Bay National Park) Isopogonanethhabit.JPG
Habitat (Botany Bay National Park)

Isopogon anethifolius is a shrub usually between 1 and 3 m (3 and 10 ft) high with an upright habit (tall and thin with mostly vertical stems). [2] It generally grows taller in more sheltered areas such as woodlands, and shorter in more exposed areas. [3] The stems are reddish in colour, and new growth in winter is tinged with reddish and tan tones. [4] The leaves are terete (round in cross section) and less than 1 mm (125 in) in diameter. They branch once or twice in their 16 cm (6+14 in) length. The globular yellow flowerheads, known as inflorescences, appear at the ends of branches in spring and early summer (September to December), [5] [6] though occasionally at other times of year. [3] These are up to 4 cm (1+12 in) in diameter. [7] The individual flowers arise out of the central woody globe in a spiral pattern, [3] and are around 1.2 cm (12 in) long. [4] They are straight stalkless structures that originate from a scale on the globe, composed of a tubular structure known as the perianth, which envelopes the flower's sexual organs. The perianth splits into four segments, revealing a thin delicate style tipped with the stigma. At the ends of the four perianth segments are the male pollen-bearing structures known as anthers. [8] Arranged in a spiral pattern, the flowers open from the outer/bottom of the flowerhead inwards. [4] The egg-shaped grey cones are revealed as the old flower parts fall away, [9] and are up to 2.5 cm (0.98 in) in diameter. The seed-bearing nuts are small—up to 4 mm (316 in) across—and lined with hairs. [10] The seed weighs around 4 mg (0.00014 oz). [6]

The terete leaves readily distinguish Isopogon anethifolius from other members of the genus, [4] which have flat leaves and are greater than 1 mm (125 in) across. [11] On a microscopic level, the supporting ground tissue of I. anethifolius differs from some of its genus by its irregular misshapen sclereids (thick-walled cells that make up part of the ground tissue) and contorted cell body. [12]

Taxonomy

Cone persisting after the flowers have died Isopogon anethifolius Middle Head seedpod.jpg
Cone persisting after the flowers have died

Isopogon anethifolius was among the plants collected by English botanist Joseph Banks and Swedish naturalist Daniel Solander on 5 May 1770 at Botany Bay during the first voyage of Captain James Cook. [13] A drawing by Scottish artist Sydney Parkinson was the source for a subsequent painting by James Britten, published in 1905. [13] [14]

English botanist Richard Salisbury described the species in 1796 as Protea anethifolia, [15] from a specimen collected in Port Jackson (Sydney). [16] The species name is derived from the Latin words anethum "dill" and folium "leaf", from the resemblance of its leaves to those of the herb. [5] The common name is variously written as narrowleaf-, [10] narrow-leaf-, [2] or narrow-leafed drumsticks. [3] The common name drumsticks is derived from the globular cones of the members of the genus. [17]

In 1799, the Spanish botanist Antonio José Cavanilles described Protea acufera, [18] later identified as a synonym by Salisbury and Robert Brown. [19] [20] I. anethifolius gained its current name in 1809 when it was redescribed as the dill-leaved isopogon (Isopogon anethifolius) by English plantsman Joseph Knight in his controversial work On the cultivation of the plants belonging to the natural order of Proteeae . [21] [19] Robert Brown had written of the genus Isopogon but Knight had hurried out his work before Brown's. Brown's description appeared in his paper On the natural order of plants called Proteaceae in the Transactions of the Linnean Society in 1810. [9]

French naturalist Michel Gandoger described four taxa in 1919 that he regarded as similar to (but distinct from) I. anethifolius. I. confertus was a plant from Rylstone on the Central Tablelands, which he distinguished by its crowded leaves that were 7–8 cm (2+343+14 in) long. I. eriophorus was a plant with more scattered leaves that were 12–14 cm (4+345+12 in) long. He described I. globosus from the Port Jackson district on the basis of round (rather than oval) infructescences (cones), and I. virgatulus from Western Australia. [22] All four were subsequently synonymised with I. anethifolius. [21] Gandoger described 212 taxa of Australian plants, almost all of which turned out to be species already described. [23]

The 1891 publication Revisio generum plantarum was German botanist Otto Kuntze's response to what he perceived as poor method in existing nomenclatural practice. [24] Because Isopogon was based on Isopogon anemonifolius , [19] and that species had already been placed by Salisbury in the segregate genus Atylus in 1807, [25] Kuntze revived the latter genus on the grounds of priority, and made the new combination Atylus anethifolius. [26] However, Kuntze's revisionary program was not accepted by the majority of botanists. [24] Ultimately, the genus Isopogon was nomenclaturally conserved over Atylus by the International Botanical Congress of 1905. [27]

Like all species in the genus Isopogon, I. anethifolius has 13 haploid chromosomes. [28]

Distribution and habitat

Isopogonanethng.JPG
Closeup of foliage and new growth, Botany Bay National Park
Ianethifolius maranoa.jpg
In cultivation at Maranoa Gardens in Balwyn

Isopogon anethifolius is found only in New South Wales, where it occurs in the Sydney Basin and surrounds, from Braidwood northwards to Mount Coricudgy in Wollemi National Park. [2] The annual rainfall in these areas ranges from 900 to 1,600 mm (35 to 63 in). The species occurs naturally from sea level to 1,200 m (3,900 ft) altitude and is found on sandstone in heathland and dry sclerophyll woodland. [6] Typical trees it is associated with include the scribbly gums Eucalyptus haemastoma and E. sclerophylla and silvertop ash ( E. sieberi ), open forest plants such as soft geebung ( Persoonia mollis ), and heathland plants such as heath banksia ( Banksia ericifolia ), dwarf she-oak ( Allocasuarina nana ) and Wingello grevillea ( Grevillea molyneuxii ). [6]

Ecology

Isopogon anethifolius resprouts from its woody base, known as a lignotuber, after bushfire. It is also serotinous—the seeds are held on the plant as a canopy-based seedbank and are released after fire. These then fall directly to the ground or are blown a short distance by wind. [6] Plants resprouting from the lignotuber can flower in around two and a half years, while seedlings take around three and a half years. [29]

Leaf spotting is caused by the fungus Vizella . Flower buds may be damaged by weevils. [6]

Cultivation

Isopogon anethifolius was first cultivated in the United Kingdom in 1796. [7] Along with Isopogon dawsonii , it is the easiest member of the genus to grow. [4] The fine foliage, red stems, bright yellow flowers in spring and distinctive drumsticks afterwards make I. anethifolius an appealing garden plant. It has potential as a screening plant (its dense foliage can be used for privacy). [30] It prefers acidic soil with extra water, though it does not tolerate waterlogging. A part-shaded position is the preferred location, though I. anethifolius grows readily in full sun. [7] Plants can withstand frosts to −8 °C (20 °F). [31] Fertiliser applied in spring assists growth. [30] Young plants can grow long stems that eventually droop, and respond well to pruning. [7] The species can be propagated by cuttings or seeds, which germinate after 30 to 60 days. [7] Flowering can take several years from seed. [4] Western Australian Isopogon species including I. cuneatus and I. latifolius have been grafted onto rootstocks of this species. [31] The flowers, cones and foliage are used in the cut-flower industry. [32]

Related Research Articles

<i>Banksia</i> Genus of flowering plants in the family Proteaceae

Banksia is a genus of around 170 species in the plant family Proteaceae. These Australian wildflowers and popular garden plants are easily recognised by their characteristic flower spikes, and fruiting "cones" and heads. Banksias range in size from prostrate woody shrubs to trees up to 30 metres tall. They are found in a wide variety of landscapes: sclerophyll forest, (occasionally) rainforest, shrubland, and some more arid landscapes, though not in Australia's deserts.

<i>Isopogon</i> Genus of flowering plants

Isopogon, commonly known as conesticks, conebushes or coneflowers, is a genus of about forty species of flowering plants in the family Proteaceae, and are endemic to Australia. They are shrubs with rigid leaves, bisexual flowers in a dense spike or "cone" and the fruit is a small, hairy nut.

<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 aemula</i> Shrub of the family Proteaceae found on the Australian east coast

Banksia aemula, commonly known as the wallum banksia, is a shrub of the family Proteaceae. Found from Bundaberg south to Sydney on the Australian east coast, it is encountered as a shrub or a tree to 8 m (26 ft) in coastal heath on deep sandy soil, known as Wallum. It has wrinkled orange bark and shiny green serrated leaves, with green-yellow flower spikes, known as inflorescences, appearing in autumn. The flower spikes turn grey as they age and large grey follicles appear. Banksia aemula resprouts from its woody base, known as a lignotuber, after bushfires.

<i>Isopogon anemonifolius</i> A shrub of the family Proteaceae that is found only in eastern New South Wales in Australia

Isopogon anemonifolius, commonly known as broad-leaved drumsticks, is a shrub of the family Proteaceae that is native only to eastern New South Wales in Australia. It occurs naturally in woodland, open forest, and heathland on sandstone soils. I. anemonifolius usually ranges between one and two metres in height, and is generally smaller in exposed heathland. Its leaves are divided and narrow, though broader than those of the related Isopogon anethifolius, and have a purplish tinge during the cooler months. The yellow flowers appear during late spring or early summer and are displayed prominently. They are followed by round grey cones, which give the plant its common name drumsticks. The small hairy seeds are found in the old flower parts.

<i>Isopogon ceratophyllus</i> Species of plant of the family Proteaceae that is endemic to Australia

Isopogon ceratophyllus, commonly known as the horny cone-bush or wild Irishman, is a plant of the family Proteaceae that is endemic to the coast in Victoria, South Australia and on the Furneaux Group of islands in Tasmania. It is a small woody shrub that grows to 100 cm high with prickly foliage. It is extremely sensitive to dieback from the pathogen Phytophthora cinnamomi

<i>Telopea truncata</i> Shrub in the family Proteaceae endemic to Tasmania

Telopea truncata, commonly known as the Tasmanian waratah, is a plant in the family Proteaceae. It is endemic to Tasmania where it is found on moist acidic soils at altitudes of 600 to 1200 m (2000–4000 ft). Telopea truncata is a component of alpine eucalypt forest, rainforest and scrub communities. It grows as a multistemmed shrub to a height of 3 metres (10 ft), or occasionally as a small tree to 10 m (35 ft) high, with red flower heads, known as inflorescences, appearing over the Tasmanian summer and bearing 10 to 35 individual flowers. Yellow-flowered forms are occasionally seen, but do not form a population distinct from the rest of the species.

<i>Persoonia linearis</i> Shrub in the family Proteaceae native to New South Wales and Victoria in eastern Australia

Persoonia linearis, commonly known as the narrow-leaved geebung, is a shrub native to New South Wales and Victoria in eastern Australia. It reaches 3 m (9.8 ft), or occasionally 5 m (16 ft), in height and has thick, dark grey papery bark. The leaves are, as the species name suggests, more or less linear in shape, and are up to 9 cm (3.5 in) long, and 0.1 to 0.7 cm wide. The small yellow flowers appear in summer, autumn and early winter, followed by small green fleshy fruit known as drupes. Within the genus Persoonia, it is a member of the Lanceolata group of 58 closely related species. P. linearis interbreeds with several other species where they grow together.

<i>Isopogon fletcheri</i> Species of shrub endemic to the Blue Mountains in New South Wales, Australia

Isopogon fletcheri, commonly known as Fletcher's drumsticks, is a species of plant in the family Proteaceae and is endemic to a restricted area in the Blue Mountains of New South Wales. It is a bushy shrub with narrow egg-shaped to narrow lance-shaped leaves with the narrower end towards the base, and top-shaped to egg-shaped heads of yellowish or creamy green flowers.

<i>Isopogon trilobus</i> Species of shrub that is endemic to south coastal regions of Western Australia


Isopogon trilobus, commonly known as barrel coneflower, is a species of flowering plant in the family Proteaceae and is endemic to South Coast Western Australia. It is a shrub with wedge-shaped leaves with lobed or toothed leaves, and oval, spherical or barrel-shaped heads of cream-coloured to yellow flowers.

<i>Lomatia silaifolia</i> Species of plant in the family, Proteaceae native to eastern Australia

Lomatia silaifolia, commonly known as crinkle bush or parsley fern, is a plant of the family, Proteaceae native to eastern Australia. Naturally found in open forest, it grows as a small shrub 1–2 m high with highly pinnate leaves reminiscent of parsley. The white inflorescences appear in summer.

<i>Isopogon latifolius</i> Species of shrub of the family Proteaceae endemic to southwest Western Australia

Isopogon latifolius is a shrub of the family Proteaceae that is endemic to the southwest botanical province of Western Australia.

<i>Persoonia elliptica</i> Species of flowering plant

Persoonia elliptica, commonly known as snottygobble or spreading snottygobble, is a plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is an erect shrub or small tree with egg-shaped or lance-shaped leaves and groups of cylindrical yellow flowers. It usually grows in woodland or forest dominated by jarrah or marri within 50 km (30 mi) of the coast.

<i>Persoonia chamaepeuce</i> Species of flowering plant

Persoonia chamaepeuce, commonly known as the dwarf geebung or heathy geebung, is a plant in the family Proteaceae and is endemic to south-eastern Australia. It is a prostrate shrub with crowded, linear leaves and yellow flowers in the leaf axils.

<i>Petrophile pulchella</i> Species of shrub of the family Proteaceae found in eastern Australia

Petrophile pulchella, commonly known as conesticks, is a common shrub of the family Proteaceae and is found in eastern Australia. The leaves are divided with needle-shaped but soft pinnae, the flowers silky-hairy, cream-coloured and arranged in oval heads and the fruit are arranged in oval heads. Conesticks grows on shallow sandstone soils, often in open forest or heathlands near the coast. It is also occasionally seen on the adjacent ranges.

<i>Persoonia saccata</i> Species of flowering plant

Persoonia saccata, commonly known as snottygobble, and cadgeegurrup in indigenous language, is a plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is usually an erect shrub and has linear leaves and groups of up to fifty or more irregularly shaped, yellow flowers which are hairy on the outside. It usually grows in woodland dominated by jarrah, marri or large Banksia species.

<i>Isopogon mnoraifolius</i> Species of shrub of the family Proteaceae endemic to New South Wales

Isopogon mnoraifolius is a shrub of the family Proteaceae and is endemic to New South Wales.

<span class="mw-page-title-main">Leucospermum truncatulum</span> Shrub in the family Proteaceae from the Western Cape of South Africa

Leucospermum truncatulum is a slender, upright, evergreen, hardly branching shrub of up to 2 m (6 ft) high, with felty inverted egg-shaped to oval, leaves with entire margins of 1–2½ cm (0.4–1.0 in) long and ½–1 cm (0.2–0.4 in) wide. It has small globe-shaped, at first yellow, later pinkish flower heads of 1½–2 cm (0.6-0.8 in) in diameter, without a stalk, usually crowded with two to eight together near the end of the stems. It is known as oval-leaf pincushion in English, and patrysbos or kleinkopspeldekussing in Afrikaans. It is an endemic species of the south of the Western Cape province of South Africa, and flowers between August and December.

<i>Isopogon longifolius</i> Species of shrub in the family Proteaceae endemic to the southwest of Western Australia

Isopogon longifolius is a species of flowering plant in the family Proteaceae and is endemic to the southwest of Western Australia. It is a shrub with simple, linear, or deeply divided leaves and sessile, spherical heads of silky-hairy, yellow flowers and spherical to oval cone.

<i>Isopogon linearis</i> Species of shrub in the family Proteaceae endemic to the southwest of Western Australia

Isopogon linearis is a small shrub in the family Proteaceae that is endemic to the southwest of Western Australia.

References

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