密花棘豆Oxytropis imbricata Kom.
密花棘豆Oxytropis imbricata Kom.
62. 密花棘豆（中国主要植物图说·豆科） 图版21: 1-9
Oxytropis imbricata Kom. in Repert. Sp. Nov. 13: 232. 1914; E. Pet. -Stib. in Acta Hort. Gothob. 12: 76. 1937; 中国主要植物图说·豆科417. 1955; 中国高等植物图鉴2: 433.图2596. 1972.——Astragalus loczii Kanitz var. scaposa Kanitz, A nov. gyutr. eredem. 17. 1891 et in Wissensch. Erg. Reise Szechenyi 2: 693. 1898.——Oxytropis kanitzii Simps. in Not. Bot. Gard. Edinb. 8: 263. 1915.
多年生草本，高10-15厘米，丛生，呈球状。根粗壮，圆柱形，直伸，暗褐色。茎缩短，基部多分枝羽。状复叶长约10厘米，密生；托叶膜质，线状披针形，与叶柄贴生，密被长柔毛；叶柄上面有沟，被贴伏疏柔毛；小叶15 (21) 23 (-31)，长椭圆形或卵状披针形，长5-11毫米，宽3-5毫米，先端急尖或钝，基部圆，两面被贴伏疏柔毛，呈绢状灰色或白色。多花组成紧密总状花序，但结果的花序延伸而稀疏，通常偏向一侧；总花梗细弱，与叶等长或较叶长，被贴伏疏柔毛，向顶端呈白色；苞片卵形，小；花长约8毫米；花萼钟状，长约5毫米，被黑色和白色疏柔毛，萼齿披针状线形，与萼筒几等长；花冠红紫色，黄色（？），旗瓣长圆形，先端圆，翼瓣与旗瓣等长，先端钝，龙骨瓣与翼瓣近等长，喙长2.5毫米；子房披针形，密被柔毛，具钩状喙和短柄。荚果宽卵形或近圆形，长5-6毫米，喙短，钩状，被贴伏白色短疏柔毛，1室；果梗短。种子1-2颗，肾形，直径约2毫米，深栗色。花期5-7月，果期7-8月。
产宁夏（海原县南华山）、甘肃（南部）及青海等省区。生于海拔1800-2500米的阳坡。模式标本采自甘肃南部。
《Flora of China》 Vol. 10 (2010)
Oxytropis imbricata Komarov Repert. Spec. Nov. Regni Veg. 13: 232. 1914.
密花棘豆 mi hua ji dou
Herbs, 10-15 cm tall, acaulescent, from a many-branched caudex, tuft-forming. Stipules linear-lanceolate, with dense long trichomes, adnate to petiole. Leaves 3-10 cm, 15-29-folio-late; petiole with appressed trichomes, adaxially sulcate; leaf-let blades narrowly elliptic to ovate-lanceolate, (3-)5-11 × (1.2-)3-5 mm, both surfaces gray or white and with appressed trichomes, base rounded, apex acute to retuse. Racemes dense to lax and becoming more lax in fruit, many flowered; peduncle 10-18 cm, longer than leaves, thin, with appressed trichomes; bracts lanceolate, shorter than calyx. Calyx campanulate, 3-5 mm, with black and white trichomes; lobes lanceolate-linear, as long as or somewhat shorter than tube. Corolla purple; standard ca. 8 mm, lamina oblong, apex rounded; wings as long as stan-dard, apex retuse; keel as long as wings, beak 1.7-2 mm. Leg-ume shortly stipitate; body broadly ovoid to subspherical, 5-6 mm, papery, with appressed short trichomes, beak hook-shaped and 5-9 mm. Fl. May-Jul, fr. Jul-Aug.
● Grasslands on hillsides; 1800-3500 m. Gansu, Xinjiang, Xi-zang.
科名：豆科 Leguminosae
属名：棘豆属 Oxytropis
62. 密花棘豆（中国主要植物图说·豆科） 图版21: 1-9
Oxytropis imbricata Kom. in Repert. Sp. Nov. 13: 232. 1914; E. Pet. -Stib. in Acta Hort. Gothob. 12: 76. 1937; 中国主要植物图说·豆科417. 1955; 中国高等植物图鉴2: 433.图2596. 1972.——Astragalus loczii Kanitz var. scaposa Kanitz, A nov. gyutr. eredem. 17. 1891 et in Wissensch. Erg. Reise Szechenyi 2: 693. 1898.——Oxytropis kanitzii Simps. in Not. Bot. Gard. Edinb. 8: 263. 1915.
多年生草本，高10-15厘米，丛生，呈球状。根粗壮，圆柱形，直伸，暗褐色。茎缩短，基部多分枝羽。状复叶长约10厘米，密生；托叶膜质，线状披针形，与叶柄贴生，密被长柔毛；叶柄上面有沟，被贴伏疏柔毛；小叶15 (21) 23 (-31)，长椭圆形或卵状披针形，长5-11毫米，宽3-5毫米，先端急尖或钝，基部圆，两面被贴伏疏柔毛，呈绢状灰色或白色。多花组成紧密总状花序，但结果的花序延伸而稀疏，通常偏向一侧；总花梗细弱，与叶等长或较叶长，被贴伏疏柔毛，向顶端呈白色；苞片卵形，小；花长约8毫米；花萼钟状，长约5毫米，被黑色和白色疏柔毛，萼齿披针状线形，与萼筒几等长；花冠红紫色，黄色（？），旗瓣长圆形，先端圆，翼瓣与旗瓣等长，先端钝，龙骨瓣与翼瓣近等长，喙长2.5毫米；子房披针形，密被柔毛，具钩状喙和短柄。荚果宽卵形或近圆形，长5-6毫米，喙短，钩状，被贴伏白色短疏柔毛，1室；果梗短。种子1-2颗，肾形，直径约2毫米，深栗色。花期5-7月，果期7-8月。
产宁夏（海原县南华山）、甘肃（南部）及青海等省区。生于海拔1800-2500米的阳坡。模式标本采自甘肃南部。
《Flora of China》 Vol. 10 (2010)
Oxytropis imbricata Komarov Repert. Spec. Nov. Regni Veg. 13: 232. 1914.
密花棘豆 mi hua ji dou
Herbs, 10-15 cm tall, acaulescent, from a many-branched caudex, tuft-forming. Stipules linear-lanceolate, with dense long trichomes, adnate to petiole. Leaves 3-10 cm, 15-29-folio-late; petiole with appressed trichomes, adaxially sulcate; leaf-let blades narrowly elliptic to ovate-lanceolate, (3-)5-11 × (1.2-)3-5 mm, both surfaces gray or white and with appressed trichomes, base rounded, apex acute to retuse. Racemes dense to lax and becoming more lax in fruit, many flowered; peduncle 10-18 cm, longer than leaves, thin, with appressed trichomes; bracts lanceolate, shorter than calyx. Calyx campanulate, 3-5 mm, with black and white trichomes; lobes lanceolate-linear, as long as or somewhat shorter than tube. Corolla purple; standard ca. 8 mm, lamina oblong, apex rounded; wings as long as stan-dard, apex retuse; keel as long as wings, beak 1.7-2 mm. Leg-ume shortly stipitate; body broadly ovoid to subspherical, 5-6 mm, papery, with appressed short trichomes, beak hook-shaped and 5-9 mm. Fl. May-Jul, fr. Jul-Aug.
● Grasslands on hillsides; 1800-3500 m. Gansu, Xinjiang, Xi-zang.