Calothamnus validus
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| Near East Mount Barren | |
Scientific classification 
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Calothamnus validus, commonly known as Barrens clawflower, is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is an upright or rounded shrub with stiff, cylindrical but not sharply pointed leaves and red, 4-part flowers. The common name derives from the location, West Mount Barren, where it was found by Spencer Moore, the author of its formal description. It is commonly cultivated and has sometimes escaped from gardens in Western Australia.
Description
Calothamnus validus grows to about 3 metres (9.8 ft) tall and has leaves that are about 20–40 millimetres (0.8–2 in) long. The leaves are circular in cross section and taper to a point but are not prickly.[1][2][3]
The flowers are red and arranged in small clusters about 50 millimetres (2 in) long, containing usually 2 to 4 flowers. They have 4 petals and 4 claw-like bundles of stamens, all narrow and about the same length. Unlike some others in the genus, the flowers and fruit are never buried in corky bark. Flowering occurs from July to November and is followed by fruits which are woody capsules. The fruiting capsules have two prominently thickened, curved lobes.[1][3][4]
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Taxonomy and naming
Calothamnus validus was first formally described by Spencer Moore in 1920 in Journal of the Linnean Society, Botany from a specimen collected " in a rocky creek near West Mt. Barren".[5] The specific epithet validus is a Latin word meaning "strong", "sound" or "powerful".[6]
Distribution and habitat
Calothamnus validus occurs in the Barren Mountains in the Fitzgerald River National Park[1] in the Esperance Plains biogeographic regions.[4] It grows in rocky quartzite in kwongan.[1][7]
Ecology
This species, Calothamnus quadrifidus and others have been used in revegetation projects and in roadside plantings and both have escaped from cultivation.[8]
Conservation
Calothamnus validus is classified as "not threatened" by the Western Australian government department of parks and wildlife.[4]
References
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- ^ a b c d Page Module:Citation/CS1/styles.css has no content.Corrick, Margaret G.; Fuhrer, Bruce A. (2009). Wildflowers of southern Western Australia (3rd ed.). [Kenthurst, N.S.W.]: Rosenberg Publishing. p. 116. ISBN 9781877058844. Retrieved 5 August 2015.
- ^ Page Module:Citation/CS1/styles.css has no content.Moore, Spencer (1920). "A contribution to the Flora of Australia". Journal of the Linnean Society, Botany. 45: 205–206. Retrieved 6 August 2015.
- ^ a b Page Module:Citation/CS1/styles.css has no content.Hawkeswood, Trevor J. (1984). "Nine new species of Calothamnus Labill. (Myrtaceae: Leptospermoideae) from Western Australia". Nuytsia. 5 (1): 124–125. Retrieved 5 August 2015.
- ^ a b c Page Module:Citation/CS1/styles.css has no content."Calothamnus validus". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.Script error: No such module "EditAtWikidata".
- ^ Page Module:Citation/CS1/styles.css has no content."Calothamnus validus". APNI. Retrieved 6 August 2015.
- ^ Page Module:Citation/CS1/styles.css has no content.Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 830.
- ^ Page Module:Citation/CS1/styles.css has no content.Paczkowska, Grazyna; Chapman, Alex R. (2000). The Western Australian flora : a descriptive catalogue. Perth: Wildflower Society of Western Australia. p. 352. ISBN 0646402439.
- ^ Page Module:Citation/CS1/styles.css has no content.Keighery, Greg. "The enemy within: native environmental weeds of Western Australia" (PDF). Council of Australasian Weed Societies. Retrieved 6 August 2015.
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