|
''Adenanthos obovatus'', commonly known as basket flower or jugflower, is a shrub of the plant family Proteaceae endemic to Southwest Australia. Described by French naturalist Jacques Labillardière in 1805, it had first been collected by Archibald Menzies in 1791. Within the genus ''Adenanthos'', it lies in the section ''Eurylaema'' and is most closely related to ''A. barbiger''. ''A. obovatus'' has hybridized with ''A. detmoldii'' to produce the hybrid ''A. × pamela''. Several common names allude to the prominent red flowers of the species. It grows as a many-stemmed spreading bush up to high, and about across, with fine bright green foliage. Made up of single red flowers, the inflorescences appear from April to December, and peak in spring (August to October). The shrub grows on sandy soils in seasonally wet lowland areas as well as hills and dunes. It regenerates after bushfire by resprouting from its underground lignotuber. Pollinators include honeyeaters, particularly the western spinebill, which can access the nectar with its long curved bill, and the silvereye, which punctures the flower tube. The most commonly cultivated ''Adenanthos'' species in Australia, it has a long flowering period and attracts honeyeaters to the garden. It is harvested for the cut flower industry. ==Description== The growth habit of ''Adenanthos obovatus'' is that of a lignotuberous shrub, with many stems arising from a single underground lignotuber. It typically reaches about in height, and about 1.5 m in width, but plants occasionally reach a height of .〔Nelson (1978): 329.〕 The leaves of this species are bright green, oval in shape, up to long and wide, sessile, and arranged in a spiral pattern on the branches.〔 The flowers appear steadily between April and December, and are most frequent between August and October. They 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 long, and the style around .〔 Although the flowering period is lengthy (six months), there are generally only a few flowers at any one time, and a seven-year study at Harry Waring Marsupial Reserve south of Perth revealed fairly constant flowering from year to year, even when shrubs were cut back to ground level to simulate a bushfire.〔 The species is very similar to ''A. barbiger''. There are obvious differences in typical leaf shape, with leaves of most populations of ''A. barbiger'' being very much longer and narrower than those of ''A. obovatus''. However, leaf shape is variable in both species, and some southern populations of ''A. barbiger'' have leaves that are indistinguishable from those of ''A. obovatus''. The most systematically important properties by which the two may be distinguished are the shape of the perianth limb, which is rounded in ''A. obovatus'' and pointed in ''A. barbiger''; the bracts, glabrous versus hirsute; and the style-ends, which are green and scarlet respectively. The species also differ slightly in range of flower colours: ''A. barbiger'' has scarlet to bright red flowers, whereas ''A. obovatus'' flowers are scarlet to orange.〔Nelson (1975b): 135.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Adenanthos obovatus」の詳細全文を読む スポンサード リンク
|