總苞葶藶檢視原始碼討論檢視歷史

總苞葶藶

原圖鏈接 來自植物智

中文學名:總苞葶藶 拉丁學名:Draba involucrata 界:植物界 門:被子植物門 Angiospermae 綱:雙子葉植物綱 Dicotyledoneae 亞 綱:原始花被亞綱 Archichlamydeae 目:罌粟目 Rhoeadales 亞 目:白花菜亞目 Capparineae 科:十字花科 Cruciferae 族:葶藶族 Trib. Drabeae 屬:葶藶屬 Draba 分布區域:產青海、四川、 雲南、西藏東部。

總苞葶藶（zǒng bāo tíng lì，學名：Draba involucrata），為十字花科葶藶屬下的一個植物種，多年生叢生草本。產青海、四川、雲南、西藏東部。

總苞葶藶形態特徵

根莖分枝密，下部覆蓋條狀披針形枯葉，禾草色，細長，上部密生蓮座狀葉。

花莖無葉，高0.5-2厘米，被單毛、叉狀毛，毛灰白色。蓮座狀葉倒卵形，長3-12毫米，疏生單毛、叉狀毛，近於星狀的分枝毛，有時無毛，葉全緣或兩邊有細齒及單長毛，基部成楔形，漸窄成柄。

總狀花序有花3-10朵，密集成傘房狀；小花梗長3-6毫米；子房卵形；花柱長約0.5毫米。

原圖鏈接 來自植物智

果實橢圓形或卵形，長4-5毫米，寬約2毫米，無毛。種子卵圓形。花期6月。

Draba involucrata (W. W. Smith) W. W. Smith in Not. Roy. Bot. Gard. Edinb. n. 55: 206. 1919; O. E. Schulz in Engl. Pflanzenr. 89 (4. 105): 112. 1927. ——D. alpina L. var. leiophylla Franch. in Bull. Soc. Bot. France 30: 401. 1886; id. Pl. Delav. 1: 59. 1889. ——D. alpina L. var. involucrata W. W. Smith, l. c. 8: 121. 1913.

Herbs perennial, 0.5-3 cm tall, densely cespitose, scapose. Caudex many branched, ultimate branches terminated in rosettes and covered with petiolar remains of previous years. Stems erect, simple, often densely tomentose with a mixture of subsessile, forked and 3- or 4-rayed stellate trichomes, very rarely glabrescent distally. Basal leaves rosulate, persistent; petiole 1-5(-8) mm, persistent, rarely ciliate with simple trichomes; leaf blade suborbicular or obovate, 2-5 × 1-4 mm, abaxially sparsely to densely tomentose with subsessile, forked and 3- or 4-rayed stellate trichomes with unbranched rays, adaxially glabrous or sparsely tomentose, base cuneate, margin entire, apex rounded or obtuse. Cauline leaves absent. Racemes 3-8-flowered, ebracteate, elongated in fruit. Fruiting pedicels 2-7(-10) mm, divaricate straight, tomentose all around, very rarely glabrescent. Sepals oblong, 1.2-2 × 0.6-1.2 mm, erect, abaxially sparsely pilose or glabrous, base of lateral pair not saccate, margin narrowly membranous. Petals yellow, obovate, 2.5-4(-4.5) × (1-)1.5-2.5(-3) mm, apex emarginate; claw absent, rarely to 1 mm. Filaments 1-1.6 mm; anthers ovate, ca. 0.2 mm. Ovules 8-16 per ovary. Fruit suborbicular to elliptic, 2-4.5(-6) × 2-3 mm, latiseptate, twisted or not; valves glabrous or rarely puberulent, not veined, base and apex obtuse; style 0.1-0.6(-1) mm. Seeds brown, ovate, 1-1.3 × 0.5-0.9 mm. Fl. Jun-Aug, fr. Aug-Sep.

總苞葶藶生長環境

生於懸岩上或山坡溝谷，海拔3300-5100米。

總苞葶藶分布範圍

產青海、四川、雲南、西藏東部。模式標本采自雲南麗江。