Elatostema oblongifolium

長圓樓梯草

endemic

Elatostema oblongifolium Fu

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

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Fu, Bulletin of Botanical Laboratory of North-Eastern Forestry Institute 4(7): 26. 1980. (Bull. Bot. Lab. N.-E. Forest. Inst., Harbin.)

Elatostema multicanaliculatum Shih & Yang

Shih & Yang, Botanical bulletin of Academia Sinica 36: 268. fig. 5. 1995. (Bot. Bull. Acad. Sin., 中央硏究院植物學彙刊)

herb

Perennial herbs; stems repent or ascending, with 5 or more longitudinal canals.
Leaves membranaceous, sparsely hirsute above, glabrous beneath, asymmetrically elliptic to lanceolate-oblong, usually 5-14.5 cm long, 2.5-5.5 cm wide, basiscopic half semi cordate, margins minutely ciliolate, serrulate to coarsely serrate, apex with a nearly entire, 5-15 mm long acumen; stipules 2, 1-nerved, lanceolate, 5-7 mm long, ca. 2 mm wide.
Female inflorescences subquadrate; bracts slightly puberulent, connate into a narrowly oblong or lanceolate involucre. Female flowers short pedicellate; bracteoles narrowly lanceolate; sepals 3 or 4, linear-acicular; staminodes 3 or 4; ovary ovoid.
Achenes inconspicuously 5- or 6-ribbed, ovoid.