疏花葶藶檢視原始碼討論檢視歷史
| 疏花葶藶 |
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中文學名:疏花葶藶 拉丁學名:Draba remotiflora O. E. Schulz 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:多葉葶藶組 |
疏花葶藶(shū huā tíng lì，學名 Draba remotiflora O. E. Schulz)為十字花科多年生草本植物，生於石隙間，海拔約4600米，中國特有，分布區域狹窄，分布地點少於5個，易危，產四川松潘縣南部黃龍寺。 [1]
疏花葶藶形態特徵
多年生草本，高5-10厘米。莖直立，外傾，被單毛、有柄叉狀毛、星狀毛。
蓮座狀基生葉寬倒卵形，長1-1.5厘米，寬5-7毫米，邊緣近頂端有1-2鋸齒，頂端稍鈍，基部縮窄成柄；莖下部的葉倒卵狀楔形，大小和基生葉相同，無柄，邊緣有1-2鋸齒，上部葉漸尖縮窄；葉具疏生單毛、有柄叉狀毛和星狀毛。
總狀花序僅有花3-6朵，有苞片；小花梗長6-10毫米；花未見。按文獻記載為：花大，萼片長約3毫米，長橢圓形或卵形，頂端圓形，背面被單毛、叉狀毛；花瓣金黃色，寬倒卵形，頂端微凹，爪漸窄；
雄蕊長5-6.5毫米，花葯長卵形，長約0.6毫米；子房卵形，花柱細。
短角果長卵形，長0.5-1.2厘米，寬約4毫米，有單毛、叉狀毛；果梗長2-12毫米，下垂，花柱長2-3毫米。種子卵形。花期8月，很快即結實。 [2]
Draba remotiflora O. E. Schulz in Meddel. Goteborgs Bot. Tradgird 1: 165. 1924 et in Engl. Pflanzenr. 89 (4. 105): 186. 1927.
Herbs perennial, 5-15 cm tall. Caudex several branched, ultimate branches subfiliform, terminated in rosettes. Stems decumbent, simple, basally sparsely pubescent with stalked, forked trichomes, distally with crisped, appressed, sessile or short-stalked, forked or 3-branched trichomes. Basal leaves rosulate, persistent; petiolelike base 2-15 mm; leaf blade broadly obovate, 0.5-1.7 cm × 3-8 mm, abaxially sparsely pilose with a mixture of long-stalked, forked and minutely 3- or 4-rayed stellate trichomes, adaxially with predominantly long-stalked forked trichomes, base cuneate to attenuate, margin 1- or 2-toothed on each side, sometimes subtrilobed and with the terminal lobe largest, apex subacute. Cauline leaves 5-10, similar to basal leaves in shape and indumentum, uppermost bracts entire, oblong. Racemes 2-6-flowered, bracteate throughout, elongated considerably in fruit. Fruiting pedicels 0.5-1.5 cm, strongly recurved or uppermost ascending, sparsely pubescent all around with appressed, subsessile, forked and 3-branched trichomes. Sepals oblong or ovate, 3-3.5 × ca. 1.5 mm, spreading, abaxially pilose with simple trichomes, not saccate, margin membranous. Petals yellow, broadly obovate, 6-8 × 3-4 mm, spreading, apex emarginate; claw 2-3 mm. Filaments 3.5-5 mm, spreading; anthers oblong, 0.7-1 mm. Ovules 18-22 per ovary. Fruit suborbicular, ovate to oblong, 0.7-1.3 cm × 3-6 mm, pendulous, latiseptate, not twisted; valves puberulent with simple trichomes and fewer, forked trichomes, obscurely veined; style 2-3.5 mm. Seeds brown, ovate, 1.2-1.5 × 0.9-1.1 mm. Fl. and fr. Aug.
疏花葶藶生長環境
生長於海拔約4600米的石隙間。