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Enneapogon nigricans
''Enneapogon nigricans'', known by the common names blackheads,〔 bottle washers, pappus grass,〔 purpletop grass,〔 and niggerheads,〔(''Enneapogon nigricans''. ) USDA PLANTS.〕 is a perennial Australian grass.
Distinctive lance-shaped seedheads appear in late spring and summer. They form at the top of wiry stalks over 30 cm long. They start as an olive green colour, but dry to a light brown. The seed itself is much like a parasol in appearance, and is around 5mm across. Germination is slow and unreliable and requires warm temperatures.〔(【引用サイトリンク】 title=The Native Plants of Adelaide )〕
Leaves are smooth and of a bright, light green. Plants like sunny positions and generally grow in sunny, open mallee forests. Plants form tall dense tussocks to a maximum of only 20 cm across.〔(Plants of the Adelaide Plains and Hills. ) Library of South Australia. Accessed 21 March 2011.〕 They die down in late summer, before reshooting when the rains return.
==References==
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「Enneapogon nigricans」の詳細全文を読む
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