Calothamnus quadrifidus subsp. asper
| Calothamnus quadrifidus subsp. asper | |
|---|---|
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| Calothamnus quadrifidus asper leaves and flowers | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Myrtales |
| Family: | Myrtaceae |
| Genus: | Calothamnus |
| Species: | |
| Subspecies: | C. q. subsp. asper
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| Trinomial name | |
| Calothamnus quadrifidus subsp. asper (Turcz.) A.S.George & N.Gibson
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| Synonyms | |
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Melaleuca quadrifida subsp. aspera (Turcz.) Craven & R.D.Edwards | |
Calothamnus quadrifidus subsp. asper is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is similar to other subspecies of Calothamnus quadrifidus except that its leaves are short, flat and obviously rough and scaly when mature.
Description
[edit]Calothamnus quadrifidus subsp. asper is an erect shrub which sometimes grows to a height of 4 metres (10 ft) and lacks a lignotuber. Its leaves are flat, linear to narrow egg-shaped with the narrow end towards the base, 10–23 millimetres (0.4–0.9 in) long and 1–2 millimetres (0.04–0.08 in) wide. The leaves are also rough and scaly, with scattered hairs.[1]
The flowers are a deep red colour and are arranged in clusters, usually on one side of the stem amongst the older leaves. The stamens are arranged in 4 claw-like bundles, each about 23–28 millimetres (0.9–1 in) long. Flowering occurs from August to September and is followed by fruits which are woody, barrel-shaped capsules, 10–14 millimetres (0.4–0.6 in) long.[1]
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Taxonomy and naming
[edit]Calothamnus quadrifidus subsp. asper was first formally described in 2010 by Alex George in Nuytsia.[2] It had originally been described in 1849 by Nikolai Turczaninow as Calothamnus asper.[1][3] The word (asper) is a Latin word meaning "rough", "harsh" or "uneven".[4]
Distribution and habitat
[edit]Calothamnus quadrifidus subsp. asper is found in the Wongan Hills district[1] of the Avon Wheatbelt biogeographic region.[5]
Conservation
[edit]Calothamnus quadrifidus subsp. asper is classified as "Priority Two" by the Western Australian Government Department of Parks and Wildlife[5] meaning that it is poorly known and from fewer than five locations.[6]
References
[edit]- ^ a b c d George, Alex S.; Gibson, Neil (2010). "A revision of Calothamnus quadrifidus (Myrtaceae)" (PDF). Nuytsia. 20: 70–72. Retrieved 1 August 2015.
- ^ "Calothamnus quadrifidus subsp. asper". APNI. Retrieved 2 August 2015.
- ^ "Calothamnus asper". APNI. Retrieved 2 August 2015.
- ^ Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 669.
- ^ a b "Calothamnus quadrifidus subsp. asper". FloraBase. Retrieved 2 August 2015.
- ^ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 16 July 2019.