Roundleaf honeysuckle | |
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Lambertia orbifolia in Kings Park, Perth | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Order: | Proteales |
Family: | Proteaceae |
Genus: | Lambertia |
Species: | L. orbifolia |
Binomial name | |
Lambertia orbifolia | |
Lambertia orbifolia, commonly known as the roundleaf honeysuckle, [2] is a shrub or small tree that is endemic to the south-west of Western Australia. It has more or less circular leaves and groups of between four and six orange-red flowers.
Lambertia orbifolia was first formally described in 1964 by Western Australian State Botanist Charles Gardner from a specimen collected at the Scott River by Alfred John Gray in January 1945. The description was published in the Journal of the Royal Society of Western Australia . The specific epithet (orbifolia) is from the Latin words orbis meaning anything circular and -folius meaning "-leaved". [3] [4] [5] [6]
Three subspecies have been described in a 2023 genetic analysis of existing scattered populations: [7]
Lambertia orbifolia is a shrub or small tree that grows to a height of up to 5 m (16 ft) but does not form a lignotuber. It has erect, spreading branches covered with soft hairs. The leaves are arranged in opposite pairs, sometimes in whorls of three and are 15–20 mm (0.59–0.79 in) in diameter and sessile. The flowers are arranged in groups of between four and six, each flower 40–60 mm (1.6–2.4 in) long with overlapping bracts at the base. The flowers are orange-red and tube-shaped with hairs on the inside. Flowering occurs throughout the year but peaks between November and May. The fruit is a woody capsule 7–10 mm (0.28–0.39 in) in diameter with a short beak [2] [8] [9] [10]
Roundleaf honeysuckle is known from two main areas, corresponding to the two proposed subspecies. Subspecies orbifolia occurs in the Narrikup area where it grows with jarrah and marri in banksia woodland, and subspecies 'Scott River Plains' grows in dense shrubland and heathland in the Scott River Plains. [2]
Lambertia orbifolia is killed by fire and regenerates from seed shortly after the fire, but few germinate in the interfire period. The species is susceptible to Phytophthora cinnamomi infection. The main pollinator of the species is thought to be the New Holland honeyeater (Phylidonyris novaehollandiae). [9]
Both proposed subspecies of this plant are listed as "Threatened Flora (Declared Rare Flora — Extant)" by the Department of Environment and Conservation (Western Australia) [ citation needed ] and "critically endangered" under the Western Australian Government Biodiversity Conservation Act 2016 . An Interim Recovery Plan has been prepared for subspecies orbifolia. [10] Subspecies orbifolia is at a high risk of extinction due to P. cinnamomi infection and from damage caused by road maintenance activities. A proposal to translocate the subspecies has been prepared. [9] The species is listed as "endangered" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 . The main threats to the species are infection by P. cinnamomi, road and track maintenance and changes in hydrology. [2]
Persoonia micranthera, commonly known as the small-flowered snottygobble, is a species of flowering plant in the family Proteaceae and is endemic to a restricted area in the south-west of Western Australia. It is a low-lying to prostrate shrub with branchlets that are hairy when young, spatula-shaped to lance-shaped leaves with the narrower end towards the base, hairy yellow flowers borne in groups of four to fifteen, and smooth, oval fruit.
Adenanthos cygnorum, commonly known as common woollybush or just woollybush, is a tall shrub in the family Proteaceae. It is endemic to Western Australia, commonly occurring in the south west of the State from north of Geraldton south to Kojonup. It is very common on road verges and in disturbed areas of Perth.
Banksia montana, commonly known as the Stirling Range dryandra, is a species of shrub that is endemic to the Stirling Range in Western Australia. It has hairy stems, linear pinnatisect leaves with twisted, triangular lobes, yellow flowers in heads of about sixty and reddish-brown follicles.
Grevillea fililoba is a species of flowering plant in the family Proteaceae and is endemic to a restricted area in the south-west of Western Australia. It is a spreading shrub with soft foliage, divided leaves with narrow linear lobes, and clusters of pink to bright red and white flowers.
Lambertia multiflora, commonly known as many-flowered honeysuckle, is a multi-stemmed shrub which is endemic to the south-west of Western Australia. It grows to between 0.5 and 2.5 metres high and flowers from winter to summer.
Grevillea flexuosa, commonly known as zigzag grevillea or tangled grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is an erect shrub with divided leaves, these lobes with three to five triangular lobes, and cylindrical clusters of cream-coloured to pale yellow flowers.
Grevillea pilosa is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a spreading to prostrate shrub with wedge-shaped to oblong leaves with sharply pointed, more or less triangular teeth or lobes, and clusters of pale pink to rose-pink or red flowers.
Grevillea concinna, commonly known as red combs or elegant grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a spreading to erect shrub with mostly linear to narrow wedge-shaped leaves sometimes with a sharp point on the tip. Flower colour varies with subspecies.
Grevillea tripartita is species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is an erect, prickly shrub with divided leaves with 3 lobes, and clusters of red and cream-coloured or reddish-orange and yellow flowers.
Adenanthos detmoldii, commonly known as Scott River jugflower or yellow jugflower, is a species of shrub in the family Proteaceae. It is endemic to the south-west of Western Australia.
Adenanthos ileticos is a species of shrub in the family Proteaceae. It has roughly triangular, lobed leaves, and pale pink-red and cream, inconspicuous flowers. A rare species, it is known only from a single location in the south-west of Western Australia. It was discovered in 1968, and immediately brought into cultivation, but it would not be formally published and named until a decade later.
Adenanthos meisneri, commonly known as prostrate woollybush, is a species of shrub in the family Proteaceae. It is endemic to the south-west of Western Australia.
Adenanthos pungens, the spiky adenanthos, is a species of shrub in the family Proteaceae. It is endemic to the south-west of Western Australia.
Adenanthos × cunninghamii, commonly known as woollybush, Albany woollybush or prostrate woollybush, is a hybrid shrub in the family Proteaceae. It is endemic to the south-west of Western Australia. The Noongar peoples know the plant as boyur.
Adenanthos dobagii, commonly known as Fitzgerald woollybush, is a shrub in the family Proteaceae. It grows to a mere 50 cm high, with crowded small silvery leaves and insignificant pink or cream flowers. It occurs only in southwestern Australia, where it is found in Fitzgerald River National Park on the south coast.
Adenanthos eyrei is a species of shrub in the family Proteaceae. Restricted to a single cliff-top dune system on the remote south coast of Western Australia, it is listed as rare and endangered. It was discovered by E. Charles Nelson in 1973, and formally described and named in 1978.
Grevillea dryandroides, commonly known as phalanx grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. A diffuse, clumping shrub, it often forms suckers and has divided leaves with up to 35 pairs of leaflets, and groups of red to pinkish flowers on an unusually long, trailing peduncle.
Grevillea nana, commonly known as dwarf grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a prostrate to low, mounded, dense shrub with divided leaves with sharply-pointed, linear lobes, and clusters of pink, orange, yellow or red flowers.
Grevillea christineae, commonly known as Christine's grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is an erect, rounded shrub with wiry branches, linear to narrowly elliptic leaves, and white flowers.
Grevillea obliquistigma is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a spreading shrub with linear leaves, and conical to cylindrical clusters of creamy-white to yellowish cream-coloured flowers, sometimes tinged with pink.