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''Roscoea debilis'' is a perennial herbaceous plant found in Yunnan, China. Most members of the ginger family (Zingiberaceae), to which it belongs, are tropical, but ''R. debilis'', like other species of ''Roscoea'', grows in much colder mountainous regions.〔 == Description == ''Roscoea debilis'' is a perennial herbaceous plant. Like all members of the genus ''Roscoea'', it dies back each year to a short vertical rhizome, to which are attached the tuberous roots. When growth begins again, "pseudostems" are produced: structures which resemble stems but are actually formed from the tightly wrapped bases (sheaths) of its leaves.〔 Plants are usually tall, occasionally as short or as tall as . It has five to seven leaves. The first two or three consist only of pinkish brown sheaths; the remaining leaves have blades usually long by wide. The blades are narrowed at the base, appearing to form a stalk. At the junction of the blade and sheath there is a small pinkish brown ligule, extending to about .〔 Flowers appear in June to August in the wild. The stem (peduncle) of the flower spike (inflorescence) is either held within the leaf sheaths or sometimes slightly extended from them. One to three flowers open together and are purple, red or white. The narrow bracts which subtend the flowers are long, longer than the calyx.〔 Each flower has the typical structure for ''Roscoea'' (see the diagrams in that article). There is a tube-shaped outer calyx, long, with a two-lobed apex. Next the three petals (the corolla) form a tube, longer than the calyx at , terminating in three lobes, a hooded upright central lobe, about long and two similarly sized side lobes. Inside the petals are structures formed from four sterile stamens (staminodes): two lateral staminodes form what appear to be small upright petals, which are about long with a narrowed base; two central staminodes are fused to form a lip or labellum, long by about wide. The labellum bends slightly downwards and has a narrowed base for about 5–6 mm (0.2 in) after which there are some white lines. It is split into two narrow lobes at the end.〔〔 The single functional stamen has a white anther, about long, with long spurs formed from the connective tissue between the two capsules of the anther. The ovary is long.〔 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「Roscoea debilis」の詳細全文を読む スポンサード リンク
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