Key's boronia | |
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Boronia keysii in Maranoa Gardens | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Sapindales |
Family: | Rutaceae |
Genus: | Boronia |
Species: | B. keysii |
Binomial name | |
Boronia keysii | |
Occurrence data from Australasian Virtual Herbarium |
Boronia keysii, commonly known as Keys boronia, [2] is a flowering plant that is endemic to Queensland in Australia. It is a sprawling shrub with thin stems, hairy young shoots, pinnate leaves and pink, four-petalled flowers over a long period.
Boronia keysii is an open, thin-stemmed, sprawling shrub that typically grows to a height and width of about 2 m (7 ft). The young stems are covered with brownish, star-shaped hairs. It has pinnate leaves with a single, or three, five or seven leaflets 8–75 mm (0.3–3 in) long, 4–40 mm (0.2–2 in) wide in outline. The leaves are arranged in opposite pairs and lack a petiole. The leaflets are elliptic to lance-shaped, the end leaflet 15–51 mm (0.6–2 in) long and 3–12 mm (0.1–0.5 in) wide and longer than the side leaflets. The flowers are arranged in groups of between three and six on a peduncle 3–5 mm (0.1–0.2 in) long, the individual flowers on a pedicel 5–15 mm (0.2–0.6 in) long. The four sepals are egg-shaped to triangular, 2.5–3.5 mm (0.1–0.1 in) long with a hairy back. The four petals are deep rose pink to white, 5.5–8 mm (0.2–0.3 in) long and 3–4.5 mm (0.1–0.2 in) and hairy on the back. There are eight stamens with the four nearest the sepals slightly long than the four near the petals. Flowering occurs throughout the year but mostly from May to November. The fruit is a capsule 4.5–5 mm (0.18–0.20 in) long and 1.5–2 mm (0.059–0.079 in) wide containing four black seeds. [2] [3] [4]
Boronia keysii was first formally described in 1926 by Karel Domin from specimens collected by James Keys at Lake Cootharaba in 1909. The description was published in the journal Bibliotheca Botanica published in Stuttgart under the heading Beitrage zur Flora und Pflanzengeographie Australiens (Contributions to the Flora and Plant Geography of Australia). [5] [6] [7] The specific epithet (keysii) honours the collector of the type specimen.
Key's boronia is usually found in the ecotone between forest and heath and commonly as an understorey species in open forest. It is only known from the Cooloola region near Lake Cootharaba. [8]
Boronia keysii is listed as "vulnerable" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 and the Queensland Government Nature Conservation Act 1992. The main threats to the species include changes to the water table, inappropriate fire regimes and invasion by exotic pines from nearby plantations. [8] [9]
Boronia molloyae, commonly called the tall boronia, is a plant in the citrus family that is endemic to coastal regions in the south-west of Western Australia. It is a shrub with pinnate leaves that mostly have between three and seven leaflets, and deep rose pink, four-petalled flowers. It usually grows along streams in sandy soil.
Boronia mollis, commonly known as soft boronia, is a plant in the citrus family and is endemic to New South Wales. It is a shrub with pinnate leaves, and small groups of pink flowers in leaf axils. It grows in coastal areas in forest.
Boronia safrolifera, commonly known as safrole boronia, is a species of flowering plant that is endemic to eastern Australia. It is an erect, woody shrub with pinnate leaves that have up to nineteen leaflets, and white to pink, four-petalled flowers.
Cyanothamnus anemonifolius, commonly known as narrow-leaved boronia or sticky boronia, is a flowering plant that is endemic to south-eastern Australia. It is a shrub with mostly pinnate leaves, with white to pale pink four-petalled flowers in leaf axils.
Boronia amabilis, commonly known as Wyberba boronia, is a plant in the citrus family, Rutaceae and is endemic to a small area in southern Queensland. It is an erect shrub with many branches, pinnate leaves with hairy lower surfaces and pink, four-petalled flowers.
Boronia duiganiae is a plant in the citrus family Rutaceae and is endemic to mountain ranges in south-east Queensland, Australia. It is an erect shrub with many branches, leaves with one, three or five leaflets, and pink to white, four-petalled flowers.
Boronia odorata is a plant in the citrus family Rutaceae and is endemic to the central highlands of Queensland, Australia. It is an erect shrub with many branches, mostly simple leaves and pink to white, four-petalled flowers.
Boronia rivularis, commonly known as the Wide Bay boronia, is a plant in the citrus family Rutaceae and is endemic to the Wide Bay–Burnett area of eastern Queensland. It is an erect, woody shrub with pinnate leaves and white to pink, four-petalled flowers.
Boronia umbellata, commonly known as the Orara boronia, is a plant in the citrus family Rutaceae and is endemic to a small area on the north coast of New South Wales. It is an erect shrub with many branches, aromatic, pinnate leaves and clusters of up to ten dark pink flowers in the leaf axils.
Boronia filicifolia is a plant in the citrus family, Rutaceae and is endemic to the far north-west of Australia. It is an erect or sprawling shrub with many branches, pinnate leaves with up to 55 leaflets and white to pink flowers with the sepals a similar length to the petals.
Boronia galbraithiae, commonly known as the aniseed boronia or Galbraith's boronia, is a plant in the citrus family Rutaceae and is endemic to a small area in Victoria. It is an erect, woody, fennel-scented, hairless shrub with pinnate leaves and white to deep pink, four-petalled flowers arranged in groups in the leaf axils.
Boronia hoipolloi is a plant in the citrus family Rutaceae and is endemic to a small area in Queensland. It is an erect or pendulous shrub with pinnate leaves and pink, four-petalled flowers. It is only known from a few collections near Mount Isa.
Cyanothamnus inflexus is a plant in the citrus family Rutaceae and is endemic to tablelands near the New South Wales - Queensland border in Australia. It is an erect, woody shrub with pinnate leaves and up to seven white to pink four-petalled flowers in the leaf axils. Boronia bipinnata is similar but has larger, bipinnate or tripinnate leaves and smaller sepals and petals.
Boronia interrex, commonly known as the Regent River boronia, is a plant in the citrus family, Rutaceae and is endemic to a small area in the Kimberley region of Western Australia. It is an erect, sometimes low-lying shrub with pinnate leaves, cream-coloured to pale pink sepals and pink petals, the sepals longer and wider than the petals.
Boronia kalumburuensis is a plant in the citrus family Rutaceae and is endemic to the Kalumburu area of Western Australia. It is an erect or sprawling shrub with many branches, pinnate leaves and white to pink four-petalled flowers with the sepals longer and wider than the petals.
Cyanothamnus montimulliganensis is a plant in the citrus family Rutaceae and is endemic to a single mountain in Queensland. It is an erect, woody shrub with pinnate or bipinnate leaves and white, four-petalled flowers usually arranged singly in leaf axils.
Boronia palasepala is a plant in the citrus family Rutaceae and is endemic to a small part of Queensland, Australia. It is an erect, rounded shrub with many branches, simple leaves and pink to white, four-petalled flowers.
Cyanothamnus penicillatus is a plant in the citrus family, Rutaceae and is endemic to the south-west of Western Australia. It is a low, spreading shrub with pinnate leaves and white flowers with four petals and eight stamens.
Boronia squamipetala is a species of plant in the citrus family, Rutaceae, and is endemic to Queensland, Australia. It is an erect shrub with pinnate leaves with between five and thirteen elliptic leaflets, and green to white, four-petalled flowers with hairy backs.
Boronia tolerans is a plant in the citrus family, Rutaceae and is endemic to a small area in the Northern Territory in Australia. It is an erect shrub with many branches, pinnate leaves and white, four-petalled flowers. It is only known from Nitmiluk National Park.