窄膜麻黄查看源代码讨论查看历史
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中文名称：窄膜麻黄 拉丁学名：Ephedra lomatolepis Schrenk 科：麻黄科 Ephedraceae 属：麻黄属 Ephedra 种：窄膜麻黄 |
窄膜麻黄(zhǎi mó má huáng)，学名 Ephedra lomatolepis Schrenk， 小灌木。产于新疆维吾尔自治区沙地，海拔500-700米地带。 [1]
形态特征
Shrubs or subshrubs, to 50 cm; herbaceous branchlets green, 1-1.5 mm in diam., rigid, finely furrowed, internodes 4-6 cm.
Leaves and bracts of cones with narrow, membranous margins. Leaves opposite or in whorls of 3. Pollen cones densely aggregated at nodes along branches, 5-6 mm;
bracts in 2-4 pairs, connate for ca. 1/2 their length; anthers 6-8, shortly stipitate. Seed cones solitary or in clusters of 3 or 4; peduncle long, 1-5 cm;
bracts in 3-5 pairs or whorls, free, margins prominent, broad, membranous, often erose, becoming red and fleshy at maturity;
integument tube ca. 1.5 mm, slightly spirally twisted. Seeds 2 or 3, brown, ca. 4 mm. Pollination May, seed maturity Jul.
产地生境
Sandy places; 500-700 m. Xinjiang [Kazakhstan, SW Mongolia]
辨析
H. Riedl notes that Ephedra lomatolepis has seed cones light brown and dry when mature, with bracts free (as in E. przewalskii), the membranous margins much wider than the herbaceous center. The characters of the male plant described here seem to apply to a taxon other than E. lomatolepis (which is endemic to the Balkhash area of Kazakhstan), possibly even to a new species.
标本鉴定信息
学名 Ephedra lomatolepis Schrenk 中文名 鉴定人 刘媖心 鉴定时间 19890621
采集信息
采集人 杨喜林 刘媖心 采集号 79268 采集时间 采集地 中国 新疆 海拔 生境 半固定沙丘 习性 物候期 无花无果