《中国植物志》|| 虎耳草科 SAXIFRAGACEAE ||小伞系 Ser. Umbellulatae J. T. Pan in Acta Phytotax. ||小伞虎耳草 Saxifraga umbellulata Hook.f. & Thoms.

115. 小伞虎耳草（植物分类学报）松滴（藏名）
Saxifraga umbellulata Hook. f. et Thoms. in Journ. Linn. Soc. Bot. 2: 71. 1857; Clarke in Hook. f. Fl. Brit. Ind. 2: 395. 1878: Engl. et Irmsch. in Bot. Jahrb. 48: 600. f. 13E-H. 1912 et in Engl. Pflanzenr. 67(IV. 117), 148. f. 35E-H. 1916; J. T. Pan in Acta Phytotaz. Sin. 16(2): 19. 1978; 中国高等植物图鉴补编2: 32. 1983; 西藏植物志 2: 494. 图162: 10-15. 1985.
多年生草本，高5.5-10厘米。茎不分枝，被褐色腺毛。基生叶密集，呈莲座状，匙形，长0.8-1.35厘米，宽2-3毫米，先端钝，无毛；茎生叶长圆形至近匙形，长4.5-6.6毫米，宽1.5-2毫米，两面和边缘均具褐色腺毛，或腹面无毛。聚伞花序伞状或复伞状，长3-5.5厘米，具2-23花；花梗长0.7-1.7厘米，纤弱，被褐色腺毛；萼片在花期，通常直立，卵形至三角状狭卵形，长2.2-3.5毫米，宽约1.3毫米，先端急尖或稍钝，腹面无毛，背面和边缘多少具褐色腺毛，3脉于先端不汇合；花瓣黄色，提琴状长圆形至提琴形，长6.5-9毫米，宽2.9-3.2毫米，先端钝圆至急尖，基部狭缩成长0.4-0.5毫米之爪，3-5脉，具2痂体；雄蕊长约3毫米，花丝钻形；子房近上位，阔卵球形，长约1毫米，花柱2，长约0.5毫米。染色体2n=16。花期6-9月。
产我国西藏南部。生于海拔3 060-4400米的沼泽地和岩壁石隙。锡金、尼泊尔也有。模式标本采自锡金。
全草入药；苦，寒；清热解毒。

《Flora of China》|| Saxifragaceae || Saxifraga ||小伞虎耳草 Saxifraga umbellulata

166. Saxifraga umbellulata J. D. Hooker & Thomson, J. Proc. Linn. Soc., Bot. 2: 71. 1858.

小伞虎耳草 xiao san hu er cao

Herbs perennial, 5.5-10 cm tall. Stem simple, brown glandular hairy. Basal leaves aggregated into a rosette; leaf blade spatulate, 0.8-1.4 cm × 2-3 mm, adaxially smooth or sometimes subpustulate distally, glabrous or margin sometimes cartilaginous setose-ciliate, apex obtuse. Cauline leaves oblong to subspatulate, 4.5-6.6 × 1.5-2 mm, both surfaces brown glandular hairy or adaxially glabrous, margin brown glandular hairy. Cyme umbelliform or compoundly so, 3-5.5 cm, 2-23-flowered; pedicels slender, 0.7-1.7 cm, brown glandular hairy. Sepals usually erect, ovate to narrowly triangular-ovate, 2.2-3.5 × ca. 1.3 mm, abaxially and marginally ± brown glandular hairy, veins 3, not confluent at apex, apex subobtuse or acute. Petals yellow, pale yellow, white, or pink, pandurate to pandurate-oblong, 6.5-9 × 2.9-3.2 mm, 2-callose, 3-5-veined, base contracted into a claw 0.4-0.5 mm, apex obtuse to acute. Stamens ca. 3 mm. Ovary subsuperior, broadly ovoid, ca. 1 mm; styles ca. 0.5 mm. Fl. Jun-Sep. 2n = 16*.

Forests, scrub, marshlands, alpine rock crevices, sunny cliffs; 3000-4700 m. E and S Xizang [Nepal, Sikkim].

Two of the present authors (Gornall and Ohba) believe that at least three species should be recognized within this complex: Saxifraga lhasana, S. pasumensis (possibly with S. muricola as a variety), and S. umbellulata. Saxifraga lhasana and S. pasumensis can be distinguished from S. umbellulata by having basal leaves adaxially smooth (vs. subpustulate distally) and margin cartilaginous setose-ciliate; S. lhasana can be further distinguished by having white (vs. yellow) petals.