SALICACEAE. 1 
Determined by CAMILLO SCHNEIDER. 
POPULUS L. 
Populus Wilsonii Schneider, n. sp. | 
Arbor late pyramidalis, 5-24 m. alta, trunco circuitu 0.5-1.5 m, 
primo aspectu Idesiae polycarpae non absimilis; ramuli crassi, anno-  - 
tini cylindrici, purpurascentes v. olivaceo-brunnei, saepe subglauci, . 
glabri; vetustiores cinereo-brunnei, deinde cinerascentes; gemmae 
satis magnae, ut videtur obtuse ovatae, rubro- v. flavo-brunneae, 
glabrae sed (an semper?) leviter viscosae, perulis glabris margine 
ciliatis obtectae. Folia papyracea, initio rubescentia, deinde supra 
obscure glauco-viridia, ut videtur semper glabra, subtus discoloria, ci- 
nereo-viridia, opaca, initio floccoso-tomentosa, cito subglabra, 
costam et nervos primarios sparse pubescentia v. pleraque tantum 
basi in axillis nervorum barbata utrinque laxe retieulata, late ovata v. 
subrotunda v. late ovato-oblonga, basi plus minusve cordata v. 
rotundo-truneata, apice obtusa, margine crenato-dentata dentibus - 
3-5 mm. distantibus distincte callosis, minora circiter 8 cm. longa et 
7 em. lata, majora ad 18 em. longa at ad 15 cm. lata v. interdum ad 
20 cm. longa et ad 16 cm. lata; glandulae ima basi foliorum duae (v. 
interdum nullae), subrotundae, leviter excavatae; petioli purpuras- — 
centes, supra leviter caniculati, (4-)6-11 cm. longi. Inflorescentiae 
tantum femineae cognitae, iis P. lasiocarpae simillimae, pubescentes, | 
juveniles c. 7 cm., fructiferae ad 15 cm. longae; flores breviter pedi- 
cellati. Fructus subglabri (an semper?), ovati. 
Western Hupeh: Hsing-shan Hsien, side of streams, very rare, 
alt. 1800 m., May 20 and August 1907 (No. 706°, type; pyramidal — 
bushy tree 8 m. tall, 0.5 m. girth); Changyang Hsien, alt. 1300-2000 — 
m., May 1907 (No. 706^; tree 20-25 m. tall, girth 1.5 m.); Fang Hsien, 
woodlands, alt. 1800-2600 m., June 16, 1910 (No. 4450; tree 5-15 m. - 
tall, girth 0.75-1.25 m., usually very bushy; sterile); north and south - 
of Ichang, high mountains, 1901 (Veitch Exped. No. 384, in part; - 
tree 7-13 m. tall; flowering branchlets). Western Szech'uan: — 
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