疏花岩黃耆檢視原始碼討論檢視歷史
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中文名:疏花岩黃耆 拉丁學名:Hedysarum laxiflorum Benth. ex Baker f. 界:植物界 門:被子植物門 綱:雙子葉植物綱 目:豆目 科:豆科 屬:岩黃耆屬 種:疏花岩黃耆 |
疏花岩黃耆(shū huā yán huáng qí)，學名：Hedysarum laxiflorum Benth. ex Baker，異名：Hedysarum alpinum subsp. laxiflorum ，為豆科岩黃耆屬下的一個種。中國西藏有分布記載。也分布於阿富汗北部、巴基斯坦和克什米爾地區。 [1]
形態特徵
多年生草本，莖高45-60厘米，纖細，堅硬，具條紋，無毛。葉長15-23厘米；小葉13-19，無柄；小葉片長20-30毫米，先端鈍，上面無毛，鮮綠色；
下面灰綠色，被灰白色柔毛，具明顯突出的脈。總狀花序具稍密的花；長8-10厘米；苞片剛毛狀，很小；花梗和萼等長；花萼約4毫米長，萼齒剛毛狀，與萼筒約等長；
花冠紫紅色，長16-20毫米，旗瓣與龍骨瓣約等長，翼瓣較短。莢果節莢長圓形，無毛，邊緣為不規則的齒狀。
本亞種曾記錄西藏西部的喜馬拉稚山地、但目前尚未見到該地區標本。
其主要區別特徵為疏散排列的總狀花序和小葉21-31。
FOC >> Vol.10 (2010) >> Fabaceae >> Hedysarum 14.Hedysarum laxiflorum Bentham ex Baker in J. D. Hooker Fl. Brit. India. 2: 146. 1876.
疏花岩黃耆 shu hua yan huang qi Hedysarum alpinum Linnaeus subsp. laxiflorum (Bentham ex Baker) H. Ohashi & Tateishi.
Herbs, perennial, 30-120 cm tall. Stems numerous, erect. Stipules lanceolate, ca. 7 mm, connate. Leaves 10-15 cm, 17-33-foliolate; leaflet blades elliptic to oblong-elliptic, 1.5-2.5 × 0.6-1 cm, abaxially pubescent along veins, adaxially glabrous. Racemes lax, with many flowers; bracts ovate, ca. 1/2 as long as pedicel, caducous; peduncle longer than leaves. Pedicel 4-6 mm.
Calyx campanulate, 4-6 mm, glabrous or calyx teeth pu-bescent; teeth lanceolate, unequal, most abaxial tooth longer than others, adaxial and lateral teeth ca. 1/5 as long as tube. Corolla purple; standard obovate, 1.4-1.5 cm; wings as long as to slightly longer than standard; keel 2-3 mm longer than standard. Ovary glabrous. Legume divided into 3 or 4 articles; articles broadly ellipsoid, 5-6 × 4-5 mm, compressed, gla-brous. Fl. Jul-Aug, fr. Aug-Sep.
W Xizang? [Kashmir, NW Pakistan].
No specimens of this species from China have been seen by the authors. It is likely that the lectotype of Hedysarum laxiflorum (Fal-coner 440), cited as being from near "West Tibet" by Baker (Fl. Brit. India 2: 146. 1846) and by H. Ohashi and Tateishi (Fl. E. Himalaya, 3rd. Rep. 368. 1975), was actually from the Karakoram mountains in NW Pakistan.No specimens of this species from China have been seen by the authors.
It is likely that the lectotype of Hedysarum laxiflorum (Fal-coner 440), cited as being from near "West Tibet" by Baker (Fl. Brit. India 2: 146. 1846) and by H. Ohashi and Tateishi (Fl. E. Himalaya, 3rd. Rep. 368. 1975), was actually from the Karakoram mountains in NW Pakistan.
分類文獻
《中國植物志》 第42(2)卷 (1998) >> 193頁 PDF >> 疏花岩黃耆 Hedysarum alpinum subsp. laxiflorum
SYN 註：學名已修訂，接受名為Hedysarum laxiflorum。 15b. 疏花岩黃耆（亞種）（西藏植物志）
subsp. laxiflorum (Benth. ex Baker) Ohashi et Tateishi in Univ. Mus. Univ. Tokyo Bull. 8: 367. 1975.——H. laxiforum Benth. ex Baker in Hook. f. Fl. Brit. Ind. 2: 146. 1879; 西藏植物志2: 883. 1985.
標本鑑定信息
學名 Hedysarum laxiflorum Benth. ex Baker f. 中文名 鑑定人 鑑定時間 模式類型 syntype
採集信息
採集人 Falconer, H. 採集號 440 採集時間 1864 採集地 中國 海拔 生境 習性 物候期