122 WILSON EXPEDITION TO CHINA 



76. Salix heterochroma Seemen. See p. 61. 



77. Salix isochroma Schneider, n. sp. 



i\t^i\ji-JL'i-c-<^.-' ' ^^'^^^^ 1-2 m- altus; ramuli annotini glabri, olivaceo-fusci, deinde purpureo- 

 brunnescentes. Folia ovato-oblonga v. oblanceolata, basi rotunda, apicem versus 

 plus minusve subito acuminata v. acuta, supra viridia, costa pilis fulvis et albis 

 obdita excepta glabra, subtus fere concoloria, viridescentia, pilis sericeis saepe fulvis 

 plus minusve obtecta, interdum pauUo glabrescentia, costa nervisquc circiter 3 pro 

 1 cm. prominulis et tenuiter reticulata, margine satis indistincte et distanter glan- 

 duloso-serrata, ex parte Integra, minora 2-4.5 cm. longa, 1-1.5 cm. lata, maxima 

 ad 7 cm. longa et ad 2.3 cm. lata; petioli 4-6 mm. longi, graciles, ut costa pilosuli, 

 Bupra sulcati. Amenta (fructifera tantum vidi) pedunculo circiter 5 mm. longo 

 piloso foliola minima lanceolata 1-2 gerente suffulta, 4.5-5.5 cm. longa, circiter 1 cm. 

 crassa, laxe sericea; flores 9 (inter fructus remanentes) brevipedicellati; ovaria 

 ovato-oblonga, apicem versus attenuata, sericea, bracteas fere triplo superantia, 

 stylo distincto ad medium bifido stigmatibus partitis oblongis divaricatis coronata; 

 glandula anguste-oblonga, pedicellum duplo superans, bracteis late-ovatis brunne- 

 Bcentibus extus sericeis intus subglabris aequilonga. Fructus anguste oblongi, cir- 

 citer 4 mm. longi, breviter pedicellati, subsericei. 



CHINA. Western Szech'uan: Wa-shan, alt. 3300-3800 m., July 1903 

 (Veitch Exped. No. 4524, type; with fruits). 



This species differs from S. heterochroma Seemen in the greenish under surface 

 of the leaves, which are a little serrulate, and in the glands being longer than the 

 short pedicels. It seems to be only a low shrub. The gland is very Uke that of S. 

 hylonoma Schneider, and S. isochroma may be most nearly related to that species! 



The specific name is derived from tcroy, equal, and XP^M«) color. 



78. Salix omeiensis Schneider, n. sp. 



Arbor ad 10 m. alta; ramuh annotini vetustioresque glabri, purpureo-nigri; 

 gemmae purpureae, ovato-oblongae, adpressae, glabrae v. pilis sparsis praeditae, 

 petiolis subtriplo breviores. Folia satis magna, late ovata v. paulo obovata, basi 

 ^ ^ ■" rotunda, apice subito acutata V. sensim acuta, supra saturate viridia, glabra, subtus 



ThvV^^'^ ^ valde pallida, saepissime tantum ad costam flavam sericea (juniora tota sericea?), 

 f-,''-''^ utrinque costa nervisque circiter 1-2 pro 1 cm. prominentibus, et (subtus dis- 

 L^^ tinctius) reticulata, margine breviter et distanter glanduloso-serrata v. integra, 



minora (pedunculorum) 3-6 cm. longa, 1.8-3.5 cm. lata, maxima usque 11 cm. 

 longa et 5.3 cm. lata; petioli 7-15 mm. longi, glabri v. initio sericei. Amenta (fruc- 

 tifera tantum vidi) pedunculo 1-1.5 cm. longo piloso folia 1-2 normaha gerente 

 suffulta, 10-12.5 cm. longa, circiter 1.1 cm. crassa, rhachi sparse pilosa. Fructus 

 brevipedicellati, ovato-oblongi, apice angustati, circiter 3-3.5 mm. longi, glabri 

 (stylis marcescentibus distinctis apice bifidis, stigmatibus oblongis bifidis) ; bracteae 

 ovatae, subacutae, brunneae, extus sericeae, intus glabratae, pedicellis 2-3plo 

 longiores; glandula una crassiuscula, saepe plus minusve latior quam alta, pedi- 

 cello subduplo brevior v. subaequilonga, oblonga. 



CHINA. Western Szech'uan: Mt. Omei, May 1904 (Veitch Exped., 

 No. 5193, type; tree 10 m., with fruits). 



This peculiar species seems to be related to S. heterochroma Seemen, but differs 

 widely from it in its broad leaves and in its longer petioles. The long fruiting 

 aments somewhat resemble those of S. Fargesii Franchet and its relatives, but the 

 reticulation of the leaves is more like that of the former species. 



Sect. 15. PHYLICIFOLIAE Dumortier, Fl Belg. Prodr. 12 (1827).— E. Fries 

 'mSyllog. PI. Nov. II. 36 (pro parte) (1828). — Andersson in Svensk. Vetensk. 



