Biology:Calothamnus brevifolius
| Calothamnus brevifolius | |
|---|---|
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| Calothamnus brevifolius in the Charles Gardner Nature Reserve | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Myrtales |
| Family: | Myrtaceae |
| Genus: | Calothamnus |
| Species: | C. brevifolius
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| Binomial name | |
| Calothamnus brevifolius Hawkeswood
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| Synonyms | |
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Melaleuca hawkeswoodii Craven & R.D.Edwards | |
Calothamnus brevifolius is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is a small, highly branched shrub with almost cylindrical, pointed leaves and red flowers in summer. In 2014 Craven, Edwards and Cowley proposed that the species be renamed Melaleuca hawkeswoodii.[1]
Description
Calothamnus brevifolius is a small, spreading, densely branched, glabrous shrub growing to a height of about 0.5 metres (2 ft) with thick bark on the older stems. Its leaves are mostly crowded on the younger branches, 7–15 millimetres (0.3–0.6 in) long, 0.5–0.8 millimetres (0.02–0.03 in) wide, linear, almost circular in cross section and tapering to a sharp but not prickly point.[2]
The flowers are dark pink and arranged in short dense clusters of 1 to 5 around the stem, usually on the younger branches. The petals are papery and 5–6 millimetres (0.2–0.2 in) long. The stamens are arranged in claw-like bundles with 15 to 20 stamens per bundle. Flowering occurs in January and February and is followed by fruits which are woody, roughly cylindrical capsules, 1.5–2 millimetres (0.06–0.08 in) wide.[2]
Taxonomy and naming
Calothamnus brevifolius was first formally described in 1984 by Trevor Hawkeswood from a specimen found on a roadside 11 kilometres (7 mi) east of Piawaning.[2][3] The specific epithet (brevifolius) is said to be derived from the Latin brevi meaning "short" and folius meaning "leaved", and refers to the characteristically short leaves of this species.[2] In classical Latin the proper word for "short" is brevis (masculine and feminine) or breve (neuter).[4] Folius is not attested as a single word in classical Latin,[4] and can only be found as part of a compound in classical and botanical Latin.[4][5]
Distribution and habitat
Calothamnus brevifolius is only known from the Piawaning, Cunderdin, Corrigin and Marchagee districts[2] in the Avon Wheatbelt, Geraldton Sandplains and Mallee biogeographic regions.[6] It usually grows in sand or loamy soil in association with Xylomelum angustifolium, Banksia prionotes, Melaleuca acuminata or Thryptomene prolifera.[2]
Conservation
Calothamnus brevifolius is listed as "Priority 4" by the Western Australian government Department of Parks and Wildlife[6] meaning that it is rare or near threatened.[7]
References
- ↑ Craven, Lyn A.; Edwards, Robert D.; Cowley, Kirsten J. (30 June 2014). "New combinations and names in Melaleuca (Myrtaceae)". Taxon 63 (3): 666. doi:10.12705/633.38.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Hawkeswood, Trevor J. (1984). "Nine new species of Calothamnus Labill. (Myrtaceae: Leptospermoideae) from Western Australia". Nuytsia 5 (1): 141–145. https://florabase.dpaw.wa.gov.au/science/nuytsia/99.pdf. Retrieved 26 July 2015.
- ↑ "Calothamnus brevifolius". APNI. https://biodiversity.org.au/boa/instance/apni/527011. Retrieved 6 June 2015.
- ↑ 4.0 4.1 4.2 Lewis, C.T. & Short, C. (1879). A Latin dictionary founded on Andrews' edition of Freund's Latin dictionary. Oxford: Clarendon Press.
- ↑ Stearn, W.T. (1983). Botanical Latin. History, grammar, syntax, terminology and vocabulary. (3rd edition). Newton Abbot London: David Charles.
- ↑ 6.0 6.1 "Calothamnus brevifolius". FloraBase. https://florabase.dpaw.wa.gov.au/browse/profile/5403. Retrieved 6 June 2015.
- ↑ "Conservation codes for Western Australian Flora and Fauna". Government of Western Australia Department of Parks and Wildlife. https://www.dpaw.wa.gov.au/images/documents/plants-animals/threatened-species/Listings/Conservation%20code%20definitions.pdf. Retrieved 11 July 2019.
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