目前为止，中国西南野生生物种质资源库共保藏该物种: 种子22份; DNA材料50份; DNA4份;

• 科:蔷薇科    Rosaceae
• 属:委陵菜属   Potentilla
• 种:钉柱委陵菜   Potentilla saundersiana

51. Potentilla saundersiana Royle, Ill. Bot. Himal. Mts. 1: 207. 1835. 钉柱委陵菜 ding zhu wei ling cai Herbs perennial. Roots robust, terete, rarely slender. Flowering stems erect or ascending, rarely low and tufted, 10–20 cm tall, together with petioles white tomentose and pilose. Radical leaves 2–5 cm including petiole; stipules brown, membranous, abaxially white villous or glabrescent; leaf blade subpinnately or palmately 3–7(or 8)-foliolate; leaflets sessile, adaxially green or grayish green, oblong-obovate, rarely broadly obovate, 0.5–2 cm × 4–10 mm, abaxially densely white tomentose, appressed pilose on veins, adaxially sparsely appressed pilose or densely appressed sericeous, base cuneate, margin slightly obtusely or acutely many incised serrate, rarely lobed to parted, apex obtuse, rarely acute; cauline leaves 1 or 2; stipules green, ovate or ovate-lanceolate, herbaceous, abaxially white tomentose and pilose, margin usually entire, apex acute or acuminate; leaf blade 3–5-foliolate; leaflets resembling those of radical leaves. Inflorescence terminal, laxly cymose, 1(or 2)- or many flowered. Flowers 1–1.4 cm in diam.; pedicel 1–3 cm, white tomentose. Sepals triangular-ovate or triangular-lanceolate; epicalyx segments lanceolate or elliptic, shorter than or nearly equaling sepals, abaxially white tomentose and pilose, apex acute or 1–3(–5)-fid. Petals yellow, obovate, slightly longer than or ca. 2 × as long as sepals, apex emarginate. Style subterminal, base inconspicuously thickened; stigma slightly dilated. Achenes smooth. Fl. and fr. Jun–Aug.Alpine thickets and meadows, gravel fields; 2600--5200 m. Gansu, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shanxi, Sichuan, Xinjiang, Xizang, Yunnan [Bhutan, India, Nepal, Sikkim].【引自：Flora of China】

多年生草本。根粗壮，圆柱形。花茎直立或上升，高10-20厘米，被白色绒毛及疏柔毛。基生叶3-5掌状复叶，连叶柄长2-5厘米，被白色绒毛及疏柔毛，小叶无柄；小叶片长圆倒卵形，长0.5-2厘米，宽0.4-1厘米，顶端圆钝或急尖，基部楔形，边缘有多数缺刻状锯齿，齿顶端急尖或微钝，上面绿色，伏生稀疏柔毛，下面密被白色绒毛，沿脉伏生疏柔毛，茎生叶1-2，小叶3-5，与基生叶小叶相似；基生叶托叶膜质，褐色，外面被白色长柔毛或脱落几无毛，茎生叶托叶草质，绿色，卵形或卵状披针形，通常全缘，顶端渐尖或急尖，下面被白色绒毛及疏柔毛。聚伞花序顶生，有花多朵，疏散，花梗长1-3厘米，外被白色绒毛；花直径1-1.4厘米；萼片三角卵形或三角披针形，副萼片披针形，顶端尖锐，比萼片短或几等长，外被白色绒毛及柔毛；花瓣黄色，倒卵形，顶端下凹，比萼片略长或长1倍；花柱近顶生，基部膨大不明显，柱头略扩大。瘦果光滑。花果期6-8月。 【引自：中国植物志】