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Banksia acuminata
''Banksia acuminata'' is a rare prostrate shrub endemic to south-west Western Australia. It was published in 1848 as ''Dryandra preissii'', but transferred into ''Banksia'' as ''B. acuminata'' in 2007.
==Description==
It grows as a prostrate shrub with a lignotuber or underground stems. The leaves are from 7 to 15 cm long, on a petiole from 2 to 6 cm in length. They are finely divided almost back to the midrib, into narrow lobes up to 4 cm in length. Lobes near the leaf tip are sometimes themselves so divided.
Flowers occur in the dome-shaped head characteristic of ''B.'' ser. ''Dryandra''. These occur at the end of branches, either alone or in clusters, and are subtended by leaves. They are orange-yellow in colour, and up to three centimetres in diameter. Each head contain from 50 to 70 flowers, arranged in a ring about a central hollow, in the manner normally associated with members of the former series ''Dryandra'' ser. ''Niveae''. This is surrounded by a great many involucral bracts that are narrow and taper to a long point.〔〔
As in all Proteaceae, individual flowers consist of a tubular perianth made up of four united tepals fused with the anthers, and one long wiry pistil. The pistil end is initially trapped inside the upper perianth parts, but breaks free at anthesis. In ''B. acuminata'', the perianth is 24–25 mm long, pale pink at the base and mauve above, with sticky hairs on the base. The pistil is 29–40 mm long, and cream or pink in colour. The fruit is a woody follicle firmly embedded in the woody base of the flower head, and usually containing a single winged seed.〔〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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