RANUNCULACEAE. — CLEMATIS 343 



Western Szech'uan : vicinity of Sungpan, rocky places, alt. 

 2600-3600 m., August 1910 (No. 4548; climber 2-3 m., flowers bronzy- 

 yellow); without precise localities, dry, hot valleys, alt. 2000-3100 m., 

 August 1903, September 1904 (Veitch Exped. Nos. 3132, 3132% 

 3131, 3131% seed No. 1700). Western Kansu: Tow river, alt. 

 3000 m., and Lao-chou district, alt. 3000 m., 1911, W. Purdom. 



Very abundant in the upper reaches of the Min Valley especially in the neigh- 

 bourhood of Sungpan Ting. 



A picture of this plant will be found under No. 0320 of Wilson's collection of 

 photographs. 



Clematis tangutica Korshinsky in Bull. Acad. Sci. St. Peter shourg, 

 s^r. 5, IX. 399 (1898) quoad synonymum, exclusa descriptione. — 

 Andre in Rev. Hort. 1902, 528, t. — Schneider, III. Handb. Lauhholzk. 

 I. 294, fig. 185 w-z, 191 t (1904). 



Clematis orientalis, var. tangutica Maximowicz, Fl. Tangut. 3 (1889). 

 Clematis eriopoda Koehne, Deutsch. Dendr. 155 (non Maximowicz) (1893). 



The type does not seem to occur in western China. 



The plant from the Pamirs which Korshinsky describes as C. tangutica (Maxim.) 

 is apparently not Maximowicz's plant, but belongs probably to the true C. orientalis 

 Linnaeus. Korshinsky describes his plant as having " sepala ovata, acuta, intua 

 pubescentia . . . flores 3-4 cm. in diamatro," while Maximowicz's plant haa 

 acuminate sepals, glabrous inside and flowers about 7 cm. in diameter. From the 

 following variety the plant from the Pamirs is easily distinguished by its sepala 

 being pubescent on the inside. 



Clematis tangutica, var. obtusiuscula Rehder & Wilson, n. var. 



A typo recedit ramulis junioribus, petiohs, pedunculis paullo villos- 

 ioribus, foliolis minoribus plerumque ovato-lanceolatis sparsius inciso- 

 serratis, sepahs oblonga-ellipticis obtusiuscuhs, saepe apiculatis, 2.5-3 

 cm. longis. Flores solitorii, pedunculo 8-12 cm. longo recto. 



Western Szech'uan: north-east of Tachien-lu, Ta-p'ao-shan, 

 thickets, alt. 2600-3300 m., July 1908 (No. 2487, type; climber 3-6 m., 

 flowers yellow); vicinity of Tachien-lu, A. E. Pratt (No. 237). 

 Western Kansu: Choni and Tao-chow, alt. 3000 m., 1911, W. 

 Purdom. 



In its smaller and more sparingly serrate leaflets and in the shorter, obtusish 

 or acutish sepals this variety differs chiefly from the type which has the sepala 

 long-acuminate and up to 3.5 cm. in length. The plant figured in Rev. Hort. 

 agrees in the obtuse sepals with this variety, but they are described as 3-4 cm. 

 long; specimens of cultivated plants before us have the sepals long-acuminate, as 

 described by Maximowicz. A picture of this plant will be found under No. 0290 

 of Wilson's collection of photographs. 



