14. Hedysarum laxiflorum Bentham ex Baker in J. D. Hooker, Fl. Brit. India. 2: 146. 1876.
疏花岩黄耆 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 pubescent; 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, glabrous. 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 (Falconer 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.