大花葶藶檢視原始碼討論檢視歷史
| 大花葶藶 |
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中文名:大花葶藶 拉丁學名:Draba jucunda W. W. Smith 界:植物界 門:被子植物門 綱:雙子葉植物綱 亞 綱:原始花被亞綱 目:罌粟目 科:十字花科 族:葶藶族 屬:葶藶屬 組:裸莖葶藶組 種:大花葶藶 |
大花葶藶（dà huā tíng lì，學名： Draba jucunda W. W. Smith）為 十字花科 、葶藶屬，叢生草本；基莖延伸，分枝匍匐，下部常有膜質枯葉，上部有蓮座葉叢。不育莖多葉，花莖花葶狀，均密被白色叉狀毛。總狀花序傘房狀，花葯長圓狀卵形；短角果長橢圓形。生於海拔4075—4375米，岩壁、岩坡亂石中或沙石上。 [1]
大花葶藶形態特徵
叢生草本，高3—10厘米；基莖延伸，分枝匍匐，下部常有膜質枯葉，上部有蓮座葉叢。
不育莖多葉，花莖花葶狀，均密被白色叉狀毛。蓮座葉倒披針形或多少橢圓形，長4—10毫米，寬3—4毫米，先端鈍，基部漸狹，膜質，兩面及邊緣散生叉狀毛。
總狀花序傘房狀，具2—10花，下部花稍遠離；花較大，花梗長2—7毫米，有小疏柔毛；萼片卵形，舟狀，長3—4毫米，先端鈍，背部散生有叉狀毛；花瓣黃色，狹倒卵形，長約7毫米，寬3.5毫米，先端稍微缺，基部收縮成爪；
雄蕊近等長，長3.8—4毫米，花葯長圓狀卵形，長1毫米；子房長圓形，有胚珠32，密被毛，花柱略伸長。
短角果長橢圓形，長8—11毫米，有多數單毛及少數具柄叉狀毛，宿存花柱長2.5—3毫米；果梗長5—10毫米，斜向上升，種子卵形，長約1毫米。花期6—8月，果期9月。[2]
Herbs perennial, 5-20 cm tall. Caudex branches slender, few to many, without petiolar remains of previous years. Stems erect to ascending, simple, slender, sparsely pilose proximally with simple trichomes rarely mixed with fewer forked ones. Basal leaves subrosulate; petiole rarely to 1 cm, ciliate with simple trichomes; leaf blade narrowly obovate or oblanceolate, sometimes oblong-obovate, 0.4-2 cm × 2-8 mm, often sparsely pilose with simple trichomes, abaxially often with stalked forked trichomes rarely also some stellate ones, base cuneate to attenuate, margin entire or minutely 1- or 2-toothed on each side, ciliate with simple trichomes to 1 mm, apex obtuse to acute. Cauline leaves 2-6, sessile; leaf blade oblong to subelliptic, 4-12 × 2-4 mm, with indumentum and leaf margin and apex similar to basal leaves. Racemes 2-5(-12)-flowered, ebracteate, elongated considerably and lax, subflexuous in fruit. Fruiting pedicels 0.6-2 cm, filiform, ascending to divaricate, slightly reflexed, straight or curved, glabrous. Sepals oblong, 2.5-3 × 1.5-1.8 mm, erect, abaxially sparsely pilose with simple trichomes, base of lateral pair subsaccate, margin narrowly membranous. Petals yellow, broadly obovate, 6-8 × 3-4 mm, apex subemarginate; claw to 1 mm. Filaments 3-4.5 mm; anthers oblong, 0.7-0.8 mm. Ovules 18-22 per ovary. Fruit linear, 1.5-2.2 cm × 1.5-2.5 mm, latiseptate, not twisted; valves glabrous or pilose, base and apex subobtuse; style 1.5-2 mm. Seeds brown, oblong, 1-1.3 × 0.6-0.8 mm. Fl. and fr. Jun-Jul.
Rocky grounds; 3700-4300 m. Xizang [Sikkim].
The above first record from China is based on Gould 2025 (K).
大花葶藶生長環境
生於海拔4075—4375米，岩壁、岩坡亂石中或沙石上。