ROSACEAE. — POTENTILLA 303 



Not common. Our plant differs from the ty]3e of this variety in being sparsely 

 hairy on the underside of the leaves; it also differs slightly in general aspect. 



Potentilla fruticosa, var. tangutica Wolf in Bihl. Bot. XVI. 57 {Mo- 

 nog. Potent.) (1908). 



Western Szech'uan: Mupin, alt. 2700-3300 m., October 1910 

 (No. 4629; shrub 1-1.25 m. tall, flowers yellow?). 



Our specimen differs from the original description of var. tangutica in the rather 

 large outer sepals which are nearly as long as the inner sepals. The specimen is 

 similar to King's No. 4178 from Patang-lu, Sikkim, which has still larger outer 

 sepals. 



Potentilla fruticosa, var. mandshurica Maximowicz in Bull. Acad. 

 Sci. St. Petersbourg, ser. 3, XIX. 164 (1874). 



Potentilla davurica, var. mandshurica Wolf in Bibl. Bot. XVI. 61 (Monog. 



Potent.) (1908). 

 Potentilla fruticosa, var. leucantha Makino in Tokyo Bot. Mag. XXIV. 32 



(1910). 



Western Szech'uan: Monkong Ting, valley of Hsao-chin Ho, 

 alt. 2300-3000 m., June 1908 (No. 3172; shrub 0.6 m., flowers white). 

 Western Hupeh: without precise locality, A. Henry (No. 6967). 



This variety is not uncommon in the semi-arid valleys of western Szech'uan. 



Potentilla fruticosa, var. Veitchii Bean, Trees & Shrubs Brit. Isl. 



II. 223, fig. (1914). 



Potentilla Veitchii Wilson in Gard. Chron. ser. 3, L. 102 (1911). 



Potentilla davurica, var. Veitchii Jesson in Bot. Mag. CXLI. t. 8637 (1915). 



Western Hupeh: Fang Hsien, rocky places, 2500-3000 m., July 

 and October 1901 (Veitch Exped. No. 2187, Seed No. 1087, type of 

 P. Veitchii Wilson, shrub 1-1.5 m., flowers white). Western Sze- 

 ch'uan: west and near Wen-ch'uan Hsien, rocky places, alt. 2300- 

 3600 m., July 1908 (No. 3176; bush 0.6-1 m. tall, flowers white); near 

 Sungpan Ting, uplands, alt. 3000-4000 m., August 1910 (No. 4627; 

 shrub 1 m. tall, flowers white); Tachien-lu, on rocks, alt. 4100 m., 

 July 1903 (Veitch Exped. No. 3468; shrub 0.6-1 m. tall, flowers white). 

 Shensi: Tai-pai-shan, mountain slopes up to alt. 3300 m., July 1, 

 1910, W. Purdom (Nos. 396, 396% 396^^% shrub 0.6-1 m. tall, flowers 

 white). Kansu: valley of Tow River, alt. 3000-3300 m., 1911, W. 

 Pwrdom (No. 819). Chili: Hsiao Wu-tai-shan, alt. 3000 m., August 

 1913, F. N. Meyer (Nos. 108, 1176, shrubby, flowers white). 



This variety is a prominent feature in the scrub wliich covers large areas above 

 the treeline on the mountains of western Szech'uan. In Hupeh it is rare. It 



