Adenanthos obovatus: Difference between revisions
→Taxonomy: Hybridisation with A. barbiger only a possibility - Nelson speculated on it as an explanation for Ostenfeld's A. intermedius. See Adenanthos barbiger for details. |
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Its [[growth habit]] is that of a [[lignotuberous shrub]], with many stems arising from a single underground [[lignotuber]]. It typically reaches about 1 m (3 ft) in height, and about 1.5 m (5 ft) in width, but plants occasionally reach a height of 2 m (7 ft). Stems tend to curve outwards and upwards, giving the plant a basket-like shape, which may explain some common names.<ref name="Nelson 1978">{{cite journal | author = Nelson, Ernest Charles | year = 1978 | title = A taxonomic revision of the genus ''Adenanthos'' Proteaceae | journal = Brunonia | volume = 1 | pages = 303–406 |doi=10.1071/BRU9780303}}</ref> |
Its [[growth habit]] is that of a [[lignotuberous shrub]], with many stems arising from a single underground [[lignotuber]]. It typically reaches about 1 m (3 ft) in height, and about 1.5 m (5 ft) in width, but plants occasionally reach a height of 2 m (7 ft). Stems tend to curve outwards and upwards, giving the plant a basket-like shape, which may explain some common names.<ref name="Nelson 1978">{{cite journal | author = Nelson, Ernest Charles | year = 1978 | title = A taxonomic revision of the genus ''Adenanthos'' Proteaceae | journal = Brunonia | volume = 1 | pages = 303–406 |doi=10.1071/BRU9780303}}</ref> |
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Leaves of this species are bright green, oval in shape, up to 20 mm (0.8 in) long and 15 mm (0.6 in) wide, sessile, and arranged in a spiral pattern on the branches. The flowers, which appear between May and December, are red or orange, and emerge from the leaf [[axil]]s. They are usually solitary, but occasionally an axil will carry two flowers. As with other Proteaceae species, each flower consists of a perianth of four united tepals, and a single style. In ''A. obovatus'', the perianth is around 25 mm (1 in) long, and the style around 40 mm (1.6 in).<ref name="Nelson 1978"/> |
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It produces red or orange flowers between May and December, a single flower emerging from each leaf axil. The leaves are a bright shade of green and up to 20 millimetres long. |
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==Taxonomy== |
==Taxonomy== |
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Revision as of 13:26, 28 March 2010
| Adenanthos obovatus | |
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| Species: | A. obovatus
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| Adenanthos obovatus | |
Adenanthos obovatus is a shrub which is endemic to Southwest Australia. Common names include Basket-flower, Jug-flower, Gland flower, Stick-in-the-jug and Cheeuk.
Description
Its growth habit is that of a lignotuberous shrub, with many stems arising from a single underground lignotuber. It typically reaches about 1 m (3 ft) in height, and about 1.5 m (5 ft) in width, but plants occasionally reach a height of 2 m (7 ft). Stems tend to curve outwards and upwards, giving the plant a basket-like shape, which may explain some common names.[1]
Leaves of this species are bright green, oval in shape, up to 20 mm (0.8 in) long and 15 mm (0.6 in) wide, sessile, and arranged in a spiral pattern on the branches. The flowers, which appear between May and December, are red or orange, and emerge from the leaf axils. They are usually solitary, but occasionally an axil will carry two flowers. As with other Proteaceae species, each flower consists of a perianth of four united tepals, and a single style. In A. obovatus, the perianth is around 25 mm (1 in) long, and the style around 40 mm (1.6 in).[1]
Taxonomy
The species was first described by Jacques Labillardière in Novae Hollandiae Plantarum Specimen, published in 1805.[2] Its binomial is derived from Greek; aden and anthos (gland and flower) describe the prominent nectaries of genus, and obovatus is the species characteristic egg-shaped leaves.[3]
The species hybridises with Adenanthos detmoldii, producing Adenanthos × pamela. It is possible that it infrequently hybridises with Adenanthos barbiger.[4][5]
Distribution and habitat
Adenanthos obovatus occurs in Southwest Australia coastal regions north of Perth to the east of Albany. It is widespread and the most well known species of the genus. Its habitat is sand dunes, seasonally wet depressions, swamps, and hillsides, frequently in damp conditions. It is found on grey or white sand, gravel or loam.[6]
Cultivation
Adenanthos obovatus is a commonly grown species of the genus, having more showy flowers than the related woollybushes. The plant is able to be propagated by cuttings from hardened stems of the seasons growth. It requires light soil that is well drained, and is tolerant of sunny or shaded positions. Despite its natural occurrence in a Mediterranean climate, it is known to be cultivated in regions with more humid summers. The flowers attract birds to the garden.[3]
References
- ^ a b Nelson, Ernest Charles (1978). "A taxonomic revision of the genus Adenanthos Proteaceae". Brunonia. 1: 303–406. doi:10.1071/BRU9780303.
- ^ Novae Hollandiae Plantarum Specimen 1 1805 "in terr? Van Leuwin." [given by E.C.Nelson, Brunonia 1 (1978) 329 as "`port du roi georges, cote S.O.nlle.holl.'. [i.e. King George Sound], 1803, M. Leschenault de la Tour: holo G; iso P." (APNI)].
- ^ a b "Adenanthos obovatus". Association of Societies for Growing Australian Plants (ASGAP). 4 November 2007. Retrieved 2008-12-26.
- ^ "Adenanthos obovatus Labill". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
- ^ CHAH APC (interim) Proteaceae-whole
- ^ "Adenanthos obovatus". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
External links
- "Adenanthos obovatus Labill". Flora of Australia Online. Department of the Environment and Heritage, Australian Government.
- "Adenanthos obovatus Labill". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- "Adenanthos obovatus Labill". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
Data related to Adenanthos obovatus at Wikispecies