小花葶藶檢視原始碼討論檢視歷史
| 小花葶藶 |
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中文學名:小花葶藶 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 亞 目:白花菜亞目 科:十字花科 族:葶藶族 屬:葶藶屬 組:葶藶組 |
小花葶藶（學名：Draba parviflora）為十字花科葶藶屬下的一個種。多年生叢生草本植物。分布於甘肅、青海、新疆。 [1]
小花葶藶形態特徵
小花葶藶 多年生叢生草本，高5-24厘米。根莖分枝多，短，密集，基部宿存鱗片狀枯片，上部簇生蓮座狀葉。
莖單一，密被單毛、叉狀毛和分枝毛，毛灰白色，有3-8葉。基生葉披針形，長10-15毫米，寬1-3毫米，全緣或每緣有1-2細齒，頂端漸尖或鈍，基部漸窄成柄，密被單毛、叉狀毛及分枝毛；莖生葉長卵形或長橢圓形，每緣有不等的鋸齒1-3個，頂端漸尖，基部無柄，被有與基生葉相同的毛。
總狀花序有花6-20朵；花小，萼片長橢圓形，長2-2.2毫米，有單毛；花瓣白色，長倒卵形，長3-4毫米。
短角果橢圓狀披針形，長8-11毫米，寬約2毫米；果梗短，近於直向頂端伸展，排列緊密；花柱短。花果期6-8月。 [2]
Draba parviflora (E. Regel) O. E. Schulz in Engl. Pflanzenr. 89 (4. 105): 273. 1927; A. Tolmaschev in Kom. Fl. URSS 8: 423. 1939. ——D. hirta L. α leiocarpa d. parviflora E. Regel in Tiling, Fl. Ajan. 51. 1858. ——D. subamplexicaulis C. A. Mey. var. hirsutiflolia Pohle in Feddc, . Repert. Beih. 32: 45. 1925.
Herbs perennial, (3-)6-20(-25) cm tall, compactly cespitose. Caudex few branched, ultimate branches terminated in rosettes, covered with leaf remains of previous years. Stems erect, simple, hirsute throughout with simple and coarse, forked trichomes. Basal leaves rosulate, persistent; petiole to 7 mm, ciliate; leaf blade oblong or oblanceolate, (0.3-)0.7-2(-2.5) cm × (1-)2-5 mm, abaxially hirsute with sessile or subsessile, 3- or 4-rayed stellate trichomes with unbranched rays, adaxially and ciliate margin with simple, stoutish trichomes to 1 mm, base attenuate to cuneate, margin entire or 1-3-denticulate, apex acute. Cauline leaves 2-4(-8), sessile; leaf blade ovate or oblong, 0.4-1.8 cm × 1-6 mm, pubescent as basal leaves, margin entire or 1-3-toothed on each side, apex subacute. Racemes 4-20-flowered, ebracteate, elongated in fruit. Fruiting pedicels 2-4 mm, erect, often appressed to rachis, straight, hirsute all around with simple trichomes. Sepals oblong-ovate, 1.5-2 × 0.5-0.8 mm, erect, abaxially pilose, base of lateral pair not saccate, margin not membranous. Petals white, spatulate, 2-3.5 × 1-1.5 mm, apex subemarginate or rounded; claw absent. Filaments 1-1.5 mm; anthers ovate, 0.2-0.3 mm. Ovules 24-30 per ovary. Fruit oblong-elliptic to oblong, 6-11 × 1.5-2(-2.5) mm, erect, often appressed to rachis, latiseptate, not twisted; valves glabrous, obscurely veined, base and apex subobtuse; style 0.1-0.3 mm. Seeds brown, ovate, 0.9-1.1 × 0.5-0.6 mm. Fl. and fr. Jun-Aug.
小花葶藶生長環境
生長於海拔2650-4100米山腳石隙、山谷濕地、流水溝邊。
小花葶藶分布範圍
分布於甘肅、青海、新疆。蘇聯土耳其斯坦、貝加爾湖地區也有分布。模式標本采自貝加爾湖地區。
小花葶藶本種提示
本種與硬毛葶藶 D.hirta L.相近，其區別在於本種的莖生葉較多，花小，果實排列緊密，毛較長，毛灰白色。
小花葶藶採收和儲藏
秋季可採收，洗淨，鮮用或曬乾。