| Status system | DECF |
|---|---|
| Status | P2 |
| Taxon | Cyanothamnus acanthocladus |
| Authority | (Paul G.Wilson) Duretto & Heslewood[1] |
| Synonyms | Boronia acanthoclada Paul G.Wilson |
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.
Description
Cyanothamnus acanthocladus is a shrub that grows to a height of about 0.3 m (1 ft) with spreading branches and spiny branchlets. Its leaves are narrow egg-shaped with the narrower end towards the base, 3-6 mm in long and often clustered on the older wood. The flowers are white and are borne on the ends of short shoots on a pedicel 2-3 mm in long. The four sepals are narrow triangular, fleshy, glabrous and about 2 mm (0.08 in) long. The four petals are elliptic and about 4 mm (0.2 in) long and the eight stamens are hairy. Flowering occurs in September.[2][3]
Taxonomy and naming
This species was first formally described in 1998 by Paul G. Wilson and given the name Boronia acanthoclada in Nuytsia from a specimen collected in the Frank Hann National Park.[4] In a 2013 paper in the journal Taxon Marco Duretto and others changed the name to Cyanothamnus acanthocladus on the basis of cladistic analysis.[5] The specific epithet (acanthocladus) is derived from latinized Greek, acantho- meaning 'spiny' and cladus 'a branch'.[2]
Distribution and habitat
Cyanothamnus acanthocladus grows in sand over gravel and is only known from the type collection.[3]
Conservation
Cyanothamnus acanthocladus (as Boronia acanthoclada) is classified as "Priority Two" by the Western Australian Government Department of Parks and Wildlife[3] meaning that it is poorly known and from only one or a few locations.[6]
References
- ^ "Cyanothamnus acanthocladus". Plants of the World Online. Retrieved 21 September 2021.
- ^ Wilson, Paul G. (1998). "New names and new taxa in the genus Boronia (Rutaceae) from Western Australia, with notes on seed characters". Nuytsia. 12 (1): 146–147. Retrieved 20 February 2019.
- ^
- ^ "Boronia acanthoclada". APNI. Retrieved 20 February 2019.
- ^ Duretto, Marco F.; Heslewood, Margaret M.; Bayly, Michael J. (2020). "Boronia (Rutaceae) is polyphyletic: Reinstating Cyanothamnus and the problems associated with inappropriately defined outgroups". Taxon. 69 (3): 481–499. doi:10.1002/tax.12242. S2CID 225836058
- ^ "Conservation codes for Western Australian Flora and Fauna". Government of Western Australia Department of Parks and Wildlife. Retrieved 20 February 2019.