Cyanothamnus ramosus | |
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Boronia ramosa near Bindoon | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Sapindales |
Family: | Rutaceae |
Genus: | Cyanothamnus |
Species: | C. ramosus |
Binomial name | |
Cyanothamnus ramosus | |
Occurrence data from Australasian Virtual Herbarium | |
Synonyms [1] | |
Cyanothamnus ramosus is a species of plant in the citrus family Rutaceae and is endemic to the southwest of Western Australia. It is an erect, mostly glabrous shrub with pinnate leaves with up to seven leaflets, and white, four-petalled flowers with blue or pale green backs.
Cyanothamnus ramosus is a slender, erect, mostly glabrous, woody shrub which grows to a height of 30 cm (10 in). The leaves are pinnate, 10–30 mm (0.4–1 in) long and have between three and seven leaflets on a petiole 1–11 mm (0.039–0.433 in) long. The leaflets are 5–15 mm (0.20–0.59 in) long. There are up to three flowers arranged in the leaf axils on pedicels 2–15 mm (0.079–0.591 in) long. The four sepals are thick, glabrous and egg-shaped, 1.5–5 mm (0.059–0.20 in) long. The petals are white with blue or pale green backs, broadly elliptic, 3–5 mm (0.12–0.20 in) long and prominently glandular. Flowering occurs from May to October. [2] [3]
This species was first formally described in 1839 by John Lindley who gave it the name Cyanothamnus ramosus and published the description in A Sketch of the Vegetation of the Swan River Colony . [4] [5] In 1863, George Bentham changed the name to Boronia ramosa. [6] In a 2013 paper in the journal Taxon , Marco Duretto and others restored Lindley's name Cyanothamnus ramosus on the basis of cladistic analysis. [7] The specific epithet (ramosus) is a Latin word meaning "full of branches". [8]
In 1971 and 1998, Paul Wilson described three subspecies in the journal Nuytsia . [9] [10] The names have subsequently been changed to reflect the change in the genus name:
Cyanothamnus ramosus grows on slopes and hillsides, sometimes in disused gravel pits and is widespread in the southwest from near Shark Bay to near Esperance. [2] [3] Subspecies anethifolius occurs between the Murchison River, the Stirling Range and Cape Le Grand, subspecies lesueuranus is only known from near Mt Lesueur and subspecies ramosus mainly from the Darling Range. [10]
Cyanothamnus ramosus is classed as "not threatened" by the Western Australian Government Department of Parks and Wildlife, [3] but subspecies lesueuranus is listed as "Priority Two" by the Western Australian Government Department of Biodiversity, Conservation and Attractions, [13] meaning that it is poorly known and from only one or a few locations. [14]
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.
Cyanothamnus baeckeaceus is a plant in the citrus family, Rutaceae and is endemic to eastern Australia. It is a slender or straggling shrub with simple or trifoliate leaves and pink and white four-petalled flowers. It is endemic to the south-west of Western Australia.
Cyanothamnus coerulescens, commonly known as blue boronia, is a plant in the citrus family, Rutaceae and is endemic to southern Australia. It is a small, spindly shrub with glandular stems, small, more or less cylindrical leaves and blue to pinkish mauve, four-petalled flowers. There are two subspecies endemic to Western Australia and a third that also occurs in three eastern states.
Boronia purdieana is a plant in the citrus family, Rutaceae and is endemic to the south-west of Western Australia. It is a shrub with pinnate leaves and yellow, four-petalled flowers arranged singly in leaf axils.
Cyanothamnus acanthocladus is a plant in the citrus family, Rutaceae and is endemic to a small area in the south-west of Western Australia. It is a low, prickly shrub with small leaves and white, four-petalled flowers.
Boronia capitata, commonly known as the cluster boronia, is a plant in the citrus family, Rutaceae and is endemic to the south-west of Western Australia. It is a slender, spreading shrub with simple leaves and pink, four-petalled flowers.
Cyanothamnus bussellianus is a plant in the citrus family, Rutaceae and is endemic to the south-west of Western Australia. It is a slender perennial herb or shrub with well-spaced, simple leaves and pink, blue or white, four-petalled flowers.
Cyanothamnus defoliatus is a plant in the citrus family, Rutaceae and is endemic to the south-west of Western Australia. It is a straggly shrub with simple, thread-like leaves and white to pink, four-petalled flowers that are pale blue on the back.
Cyanothamnus fabianoides is a plant in the citrus family, Rutaceae and is endemic to the south-west of Western Australia. It is a compact shrub with many branches, simple, more or less cylindrical leaves and single white, pink or pale blue four-petalled flowers in the leaf axils.
Cyanothamnus inconspicuus is a plant in the citrus family, Rutaceae and is endemic to the south-west of Western Australia. It is a shrub with pinnate leaves and small white or creamy green flowers with four petals and eight stamens and occurs from the Stirling Range to Mount Ragged.
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.
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.
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 scabra, commonly known as rough boronia, is a plant in the citrus family, Rutaceae and is endemic to the south-west of Western Australia. It is an open shrub with simple, often clustered, oblong to elliptic leaves, and pink, mostly four-petalled flowers.
Cyanothamnus subsessilis is a species of plant in the citrus family, Rutaceae and is endemic to the south-west of Western Australia. It is a woody, mostly glabrous shrub with simple leaves and flowers with four petals that are white on the front and green to blue on the back.
Cyanothamnus tenuis, commonly known as blue boronia, is a species of plant in the citrus family, Rutaceae, and is endemic to the southwest of Western Australia. It is a slender shrub with thread-like, sessile leaves, and flowers with four petals that are white to pink on the front and pale blue on the back.
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.
Boronia virgata is a plant in the citrus family, Rutaceae and is endemic to the south coast of Western Australia. It is a virgate shrub with pinnate leaves with between three and five leaflets, and flowers with red sepals and deep pink, egg-shaped petals.
Cyanothamnus westringioides is a species of erect shrub that is endemic to a small area in the southwest of Western Australia. It has simple, narrow, sessile leaves and pale pink flowers arranged singly in leaf axils.
Cyanothamnus yarrowmerensis is a species of erect, woody shrub that is endemic to Queensland. It has pinnate or bipinnate leaves and groups of up to seven flowers with white petals in leaf axils.