五蕊东爪草查看源代码讨论查看历史
五蕊东爪草 |
中文学名:五蕊东爪草 拉丁学名:Tillaea pentandra Royle ex Edgew 界:植物界 门:被子植物门 纲:双子叶植物纲 科:景天科 属:东爪草属 分布区域:藏 |
五蕊东爪草(wǔ ruǐ dōng zhǎo cǎo),拉丁学名:Tillaea pentandra Royle ex Edgew,是东爪草属 一年生小草本,高2-7厘米。根须状。茎自基部分枝,直立或斜上,不分枝或少有分枝。 [1]
五蕊东爪草形态特征
一年生小草本,高2-7厘米。根须状。茎 4-10 自基部分枝,直立或斜上,不分枝或少有分枝。叶对生,线状披针形至长圆形,长3-5毫米,宽1-2毫米,先端急尖或短渐尖,基部合生。
花叶腋单生,无梗或有短花梗;萼片5,狭三角状披针形,长1.5-1.8毫米,宽0.6毫米,先端芒状长渐尖;花瓣5,淡紫红色,卵状披针形,长1.6毫米,宽0.6毫米,先端芒状长渐尖;
雄蕊5,长0.6毫米,与萼片互生;鳞片5,匙状线形,长0.6毫米;心皮5,长圆状卵形,花柱短。
蓇葖褐色。花期7月底至8月底,果期9月中旬。 [2]
Tillaea pentandra Royle ex Edgew. in Trans. Linn. Soc. 20: 50. 1846; Hk. f. et Thoms. in Journ. Linn. Soc. 2: 90. 1858; Clarke in Hk. f. Fl. Brit. Ind. 2: 412. 1878.
英文介绍
Sem. Hort. Petrop. 8: 56. 1842; C. pentandra (Royle ex Edgeworth) Schönland; Tillaea pentandra Royle ex Edgeworth.
Herbs 2-7 cm tall. Roots fibrous. Stems branched mostly from base, erect or ascending. Leaf blade linear-lanceolate to oblong, 3-5 × 1-2 mm, margin often hyaline, apex acute to shortly acuminate. Flowers in very condensed axillary cymes shorter than subtending leaf, (4 or)5-merous; pedicel shorter than sepals, sometimes almost absent. Sepals narrowly triangular, 1.5-1.8 × ca. 0.6 mm, apex long acuminate and aristate. Petals dull white to purplish, ovate-lanceolate, 0.7-1.6 × 0.2-0.6 mm, apex long acuminate and aristate. Stamens ca. 0.6 mm. Nectar scales spatulate-linear, ca. 0.6 mm. Carpels oblong-ovoid. Styles short. Follicles brown, 2-seeded. Seeds brown, cylindric-ovoid, ca. 0.5 × 0.3 mm, smooth or obscurely longitudinally ribbed. Fl. Jul-Aug, fr. Sep.
Among rocks on grassy slopes; 3000-4800 m. Xizang [Bhutan, India, Kashmir, Nepal, Pakistan; tropical Africa, SW Asia].
The Chinese material belongs to subsp. schimperi. Two further subspecies are recognized in Africa.
五蕊东爪草生长环境
生长于海拔3040-4800米的山坡草地石上。
五蕊东爪草分布范围
产于西藏日喀则至拉萨、米林、林芝。印度、克什米尔地区、埃塞俄比亚、喀麦隆及非洲热带地区也有。模式标本采自喜马拉雅地区。 [3]