SALICACEAE. — SALIX 45 



Western Szech'uan: Mupin, thickets, alt. 2300-3000 m., June 

 1908 (No. 1401'^; 9 ). 



In the branches, the siae and shape of the large leaves, the glabrous peduncle 

 and rhachis and in the glabrous bracts there seems to be no real difference between 

 this species and S. magnifica Hemsley. But the typical S. magnifica has: ovaria 

 longius pedicellata, oblonga v. ovata, glabra, apice attenuata stylo bifido stigmati- 

 bus brevioribus bifidis coronata; bracteae ovato-oblongae. The length of the 

 bracts and of the pedicels differs very much according to the age of the flowers, 

 the uppermost in the catkins being the youngest. See also the description of the 

 sect. Magnificae on p. 113. 



The specific name is derived from olXorpixos, with curly hair. 



Salix pella Schneider, n. sp. 



Frutex 4-6 m. altus; ramuli elongati, crassi, in sicco nigro-purpuras- 

 centes, glabri. Folia oblongo-elliptica v. elliptica, apice acuta v. sub- 

 obtusa, basi rotunda v. obtusa, supra viridia, laevia, costa flavescente 

 subimpressa, subtus distincte pallida, ad costam pilis longis sericeis 

 obtecta v. glabra, costa nervisque prominulis, nervis lateralibus fere 

 modo S. magnificae Hemsley ante marginem evanescentibus, 1 pro 1 cm., 

 reticulo ex parte satis distincto, margine plus minusve glanduloso- 

 serrato-dentata v. crenulata v. ex parte integra, minora 3.5-8 cm. longa 

 et 2-2.5 cm. lata, maxima usque ad 13 cm. longa et 5,5 cm. lata; petioli 

 satis breves, 6-15 mm. longi, glabri v. pilis sericeis sparse obtecti, 

 purpurascentes v. flavescentes. Amenta fructifera pedunculo 1-2 cm. 

 longo sericeo 'suffulta, 4-9 cm. longa, circiter 1.2 cm. crassa, rhachi 

 sericea. Fructus maturi circiter 5 mm. longi, glabri, brevipedicellati, 

 pedicello glandulam unam ovato-truncatam subaequilongo ; styli ut 

 videtur mediocres, apice bifidi, stigmatibus bifidis; bracteae glabrae, 

 flavo-brunneae, ovatae, apice truncatae, capsulis 3plo breviores. 



Western Szech'uan: west of Kuan Hsien, Niu-tou-shan, wood- 

 lands, alt. 2600-3000 m., October 1910 (No. 4350, type; bush 4-6 m.; 

 with fruits). 



This species differs from S. magnifica Hemsley in its shorter petioles, smaller and 

 narrower, more distinctly serrate leaves, its much shorter catkins and in its trun- 

 cate bracts. The nervation of the leaves is somewhat intermediate between that of 

 sections Magnificae and Eriostachyae. At first I thought it might be a hybrid 

 between S. magnifica and *S. moupinensis Franchet which grow in the same region 

 and has the same kind of silky pubescence on the under side of the midrib of the 

 leaves, but the rhachis of the catkins is more glabrous in Franchet's species. The 

 color of the under side of the leaves is the same as in S. magnifica, while the leaves 

 of S. moupinensis Franchet have a greenish shining lower surface. S. pella may be 

 nearly related to S. plocotricha Schneider, which is readily distinguished, however, 

 by its hairy ovaries. As long as the male flowers are unknown it is always difficult 

 to determine the real relationship of a Willow. 



The name is derived from neXXos, dark colored. 



