Roundleaf honeysuckle | |
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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 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] [3] [4] [5]
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". [6] [7] [8] [9]
Three subspecies of L. orbifolia have been described in the journal Nuytsia in a 2023 genetic analysis of existing scattered populations, and the names are accepted by the Western Australian Herbarium and Plants of the World Online: [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 vespera 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). [4]
Lambertia orbifolia is listed as "not threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions but is listed as "endangered" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 . [2] The main threats to the species are infection by P. cinnamomi, road and track maintenance and changes in hydrology. [2] Both proposed subspecies of this plant are listed as "Threatened Flora (Declared Rare Flora — Extant)" by the Department of Environment and Conservation (Western Australia) [12] [14] and "critically endangered" under the Western Australian Government Biodiversity Conservation Act 2016 . An Interim Recovery Plan has been prepared for subspecies orbifolia. [5] 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. [4]
Banksia drummondii, commonly known as Drummond's dryandra, is a species of shrub that is endemic to Western Australia. It has pinnatifid to pinnatisect leaves, heads of up to one hundred cream-coloured, red and yellow flowers and glabrous fruit.
Banksia ionthocarpa is a species of shrub that is endemic to Western Australia. It has short, hairy, prostrate stems, pinnatifid leaves, pinkish purple to orange flower in heads of between forty and sixty at the base of leaves, and egg-shaped follicles with a distinctive tuft of hairs on the end.
Banksia prolata is a species of bushy shrub that is endemic to Western Australia. It has linear, serrated or pinnatifid leaves, yellow flowers in heads of between 150 and 250, and egg-shaped follicles.
Banksia plumosa is a species of shrub that is endemic to Western Australia. It has hairy stems, broadly linear pinnatifid to pinnatipartite leaves with triangular lobes, creamy-yellow flowers in heads of up to eighty, and egg-shaped follicles.
Banksia serratuloides is a species of small shrub that is endemic to Western Australia. It has linear, pinnatipartite leaves, yellow and pink flowers in heads of about forty and hairy, wrinkled follicles.
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 pungens, the spiky adenanthos, is a species of shrub in the family Proteaceae. It is endemic to the south-west of Western Australia.
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 nematophylla, commonly known as water bush or silver-leaved water bush, is a species of flowering plant in the family Proteaceae and is endemic to Australia. It is shrub or small tree with simple or pinnatisect leaves, the leaves or lobes linear, and branched, cylindrical clusters of cream-coloured flowers.
Pimelea rosea, commonly known as rose banjine, is a species of flowering plant in the family Thymelaeaceae and is endemic to the south-west of Western Australia. It is an erect shrub with narrowly elliptic leaves, and clusters of pale pink to reddish-purple flowers surrounded by 4 egg-shaped involucral bracts.
Grevillea bracteosa, also known as bracted 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 to spreading shrub usually with linear leaves, and oval to more or less spherical clusters of glabrous pale green to greenish-pink flowers with a pink or white style.
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.
Kunzea similis is a species of flowering plant in the myrtle family, Myrtaceae and is endemic to a small area along the south coast of Western Australia. It is a shrub with linear to lance-shaped leaves with a single vein, and spherical groups of between four and ten pink flowers on the ends of shoots.
Petrophile conifera is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a bushy, much-branched shrub with pinnate, sharply-pointed leaves, and oval heads of hairy, cream-coloured to yellowish white flowers.
Petrophile ericifolia is a species of flowering plant in the family Proteaceae and is endemic to southwestern Western Australia. It is a shrub with cylindrical leaves, and oval to spherical heads of hairy, yellow flowers.
Pimelea brevifolia is a species of flowering plant in the family Thymelaeaceae and is endemic to the south-west of Western Australia. It is an undershrub or shrub with erect, elliptic leaves, and heads of white flowers surrounded by four involucral bracts.
Pimelea brevistyla is a species of flowering plant in the family Thymelaeaceae and is endemic to the south-west of Western Australia. It is a shrub with narrowly egg-shaped leaves arranged in opposite pairs, and head-like racemes of white, tube-shaped flowers surrounded by yellowish involucral bracts.
Spyridium mucronatum is a species of flowering plant in the family Rhamnaceae and is endemic to the south of Western Australia. It is an erect or spreading shrub usually with narrowly oblong leaves, and dense clusters of up to ten densely hairy, white to yellow flowers.
Schoenia filifolia is a species of flowering plant in the family Asteraceae, and is endemic to the southwest of Western Australia. It is an annual herb with terete leaves and yellow, daisy-like inflorescences.
Cryptandra minutifolia is a flowering plant in the family Rhamnaceae and is endemic to the south-west of Western Australia. It is a spreading shrub with oblong to elliptic leaves and clusters of white or pink, tube-shaped flowers.