秃梗露珠草查看源代码讨论查看历史
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中文学名:秃梗露珠草 拉丁学名:Circaeaglabrescens (Pamp.)Hand.-Mazz. 别 称:柳叶菜科 界:植物界 科:柳叶菜科 属:露珠草属(Onagraceae) 分布区域:中国湖南西部、 |
秃梗露珠草，别名：光梗露珠草，拉丁文名：Circaea glabrescens (Pamp.) Hand.-Mazz. ，是柳叶菜科、露珠草属植物，植株高12-80厘米，被镰状弯曲的短柔毛，稀无毛；根状茎上无块茎。叶狭卵形至阔卵形，基部圆形稀近心形，先端渐尖至短渐尖，边缘具锯齿。单总状花序或基部具分枝，倒卵状至梨形，基部对称地渐狭向果梗，果实上无纵沟，但具一浅槽；成熟果实连果梗长4.5-8.5毫米，果梗无毛。图片取自中国植物图库 [1]
秃梗露珠草形态特征
植株高12-80厘米，被镰状弯曲的短柔毛，稀无毛；根状茎上无块茎 秃梗露珠草 。
叶狭卵形至阔卵形，长3.7-11厘米，宽1.8-5厘米，基部圆形稀近心形，先端渐尖至短渐尖，边缘具锯齿。单总状花序或基部具分枝，长2-18厘米；花梗与花序轴垂直，无毛，基部有一刚毛状小苞片；花芽常疏被弯的长毛，稀具短钩状毛。
花管长0.9-1.3毫米；萼片粉红或缘白色，矩圆状椭圆形至近卵形，长1.8-3.3毫米，宽1.2-1.7毫米，先端急尖或钝圆，开花时反曲；花瓣粉红色，扁圆形至阔倒卵形，长1-1.9毫米，宽1.3-2.6毫米，先端倒心形，凹缺深至花瓣长度的约一半，裂片阔圆形；雄蕊伸展，短于花柱；蜜腺不明显，藏于花管之内。
果实长2.5-3.3毫米，径1.6-1.8毫米，2室，具2种子，倒卵状至梨形，基部对称地渐狭向果梗，果实上无纵沟，但具一浅槽；成熟果实连果梗长4.5-8.5毫米，果梗无毛。花期7-8月，果期8-9月。染色体数n=11。[2]
Circaea glabrescens (Pamp.) Hand.-Mazz., Symb. Sin. 7 (2): 604. 1933; Raven in H L Li, Fl. Taiwan 3: 883. 1977, et Boufford in T. C. Huang, 1. c. ed. 2, 3: 943. 1993; et in Ann. Missouri Bot. Gard. 69: 837, f. 5. 1982; 云南植物志4: 151, 图版47 (1-3). 1986. ——Circaea cordata Royle var. glabrescens Pamp., in Nuovo Giorn. Bot. Ital. n. s. 17: 677. 1910.
Plants 12-80 cm tall, pubescent with short, soft, falcately recurved hairs, rarely glabrous. Rhizomes not tuberous. Leaves narrowly to broadly ovate, 3.7-11 × 1.8-5 cm, base rounded or rarely subcordate, margin denticulate, apex acuminate to shortly acuminate. Racemes simple or branched at base, 2-18 cm; flowering pedicel perpendicular to axis of raceme, glabrous, subtended by a setaceous bracteole. Buds commonly pubescent with a few, long, straight to slightly bent hairs, occasionally also with short uncinate hairs. Floral tube 0.9-1.3 mm. Sepals reflexed in flower, pink or greenish white, oblong to nearly ovate, 1.8-3.3 × 1.2-1.7 mm, apex acute or obtuse. Petals pink, oblate to broadly obovate in outline, 1-1.9 × 1.3-2.6 mm, apex obcordate, apical notch ca. 1/2 length of petal; petal lobes broadly rounded. Stamens spreading, shorter than style; nectary wholly within floral tube and inconspicuous. Fruiting pedicel and mature fruit 4.5-8.5 mm. Fruit 2.5-3.3 × 1.6-1.8 mm thick, locules 2, 2-seeded, obovoid to pyriform, tapering smoothly to pedicel, without ribs or sulci but with a shallow groove extending from pedicel. Seed 1 per locule. Fl. Jul-Aug, fr. Aug-Sep. 2n = 22*.
秃梗露珠草生长环境
秃梗露珠草生长于海拔700-2500米的落叶林中。
秃梗露珠草分布范围
秃梗露珠草 分布在中国湖南西部、湖北西部、四川北部、甘肃东南部、陕西中部和南部至山西西南部，亦间断分布于台湾（仅见一号标本）。模式标本采自湖北西部。