五蕊東爪草檢視原始碼討論檢視歷史
五蕊東爪草 |
中文學名:五蕊東爪草 拉丁學名:Tillaea pentandra Royle ex Edgew 界:植物界 門:被子植物門 綱:雙子葉植物綱 科:景天科 屬:東爪草屬 分布區域:藏 |
五蕊東爪草(wǔ ruǐ dōng zhǎo cǎo),拉丁學名:Tillaea pentandra Royle ex Edgew,是東爪草屬 一年生小草本,高2-7厘米。根須狀。莖自基部分枝,直立或斜上,不分枝或少有分枝。 [1]
五蕊東爪草形態特徵
一年生小草本,高2-7厘米。根須狀。莖 4-10 自基部分枝,直立或斜上,不分枝或少有分枝。葉對生,線狀披針形至長圓形,長3-5毫米,寬1-2毫米,先端急尖或短漸尖,基部合生。
花葉腋單生,無梗或有短花梗;萼片5,狹三角狀披針形,長1.5-1.8毫米,寬0.6毫米,先端芒狀長漸尖;花瓣5,淡紫紅色,卵狀披針形,長1.6毫米,寬0.6毫米,先端芒狀長漸尖;
雄蕊5,長0.6毫米,與萼片互生;鱗片5,匙狀線形,長0.6毫米;心皮5,長圓狀卵形,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.
英文介紹
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.
五蕊東爪草生長環境
生長於海拔3040-4800米的山坡草地石上。
五蕊東爪草分布範圍
產於西藏日喀則至拉薩、米林、林芝。印度、克什米爾地區、埃塞俄比亞、喀麥隆及非洲熱帶地區也有。模式標本采自喜馬拉雅地區。 [3]