54 WILSON EXPEDITION TO CHINA 



The description of von Seemen being based on rather incomplete fruiting mate- 

 rial, I add a fuller description based on Wilson's specimens, especially on No. 

 1411. 



Frutex 0.9-3.6 m. altus, ramosus; ramuli tantum initio sparse pilosi, mox glabri, 

 purpureo- v. nigro-brunnei. Folia elliptica, elliptico-oblonga, lanceolata v. rarius 

 ovata, basi in petiolum breviter attenuata v. saepissime obtusa v. rotundata, apice 

 acuta V. subacuta, supra viridia, initio saepe tota facie breviter pilosula pilis fulvis 

 et albis mixtis v. tantum costa albo-tomentella, mox glabra, subtus glauca, semper 

 glabra v. tantum costa initio pilosula, margine Integra, minora 2-3.5 cm. longa et 

 1-1.5 cm. lata, majora lanceolata usque ad 5 cm. longa et 2 cm. lata v. latiora 

 ad 4.5 cm. longa et 2.3 cm. lata, utrinque costa nervisque tenuiter prominentibus, 

 vix reticulata; petioli graciles, mox glabri, (3-)5-10 mm. longi. Amenta coetanea, 

 pedunculo 3-10 mm. longo foliis minimis v. parvis saepe caducis instructo suf- 

 fulta, rhachi glabra v. sparse pilosa, c? laxifiora, 2.5-4.5 cm. longa et 0.5-0.6 mm. 

 crassa, 9 densiflora, 2.5-5 cm. longa et 0.5 (v. fructifera 0.7) cm. crassa; flores d' 

 diandri, filamentis liberis fere ad medium villosis, antheris parvis subglobosis 

 flavis (v. dein brunneis) ; glandula una ventraUs ovata v. apice incisa, satis crassa, 

 bractea duplo brevior; bracteae obovatae, obtusae, brunnescentes, glabrae; flores 

 9 ut a cl. von Seemen descripti. 



Salix hypoleuca, var. platyphylla Schneider, n. var. 



A typo differt foliis latioribus late ellipticis basi rotundis apice 

 brevissime apiculatis, 2.3-4.7 cm. longis et 1.5-3 cm. latis, amentis 

 fructiferis longioribus, ad 7.5 cm. longis, ramulis annotinis flavidis. 



Western Szech'uan: west and near Wen-ch'uan Hsien, thickets, 

 alt. 2000-2600 m., July 1908 (No. 1418% type; shrub 3-6 m.; with 

 fruits); same locality, October 1908 (No. 1418; sterile; ramulis annotinis 

 nigro-purpurascentibus) . 



Giraldi's specimen of the type agrees very well with Wilson's No. 1411. The 

 Hupeh plant is intermediate between the type and var. platyphylla, which other- 

 wise agrees with this species. S. hypoleuca may be distinguished from S. longiflora 

 Andersson by its glabrousness, by the somewhat longer petioles and by the almost 

 sessile stigmas. 



Of No. 1418 there are living plants in by the Arnold Arboretum, but they have 

 not yet flowered. 



Salix rhoophila Schneider, n. sp. 



Frutex 1.2-2.4 m. altus, valde ramosus; ramuli juveniles tantum villo- 

 suli, interdum pilis albis et fulvis mixtis, hornotini dein subglabri, anno- 

 tini vetustioresque glabri, purpurascentes, subpruinosi. Folia valde 

 juveniUa tantum primaeva subtus v. utrinque albo-tomentella (pilis 

 fulvis intermixtis) , mox glabra, elliptica v. elliptico-oblonga, integra, 

 ceterum nondum satis evoluta. Amenta cf subsessilia, basi foliolis 

 minimis 2 v. squamiformibus saepe caducis instructa, 1-1.5 cm. 

 longa, circiter 0.6 cm. crassa, rhachi villosula; flores diandri, fila- 

 mentis libris basi villosis, antheris parvis flavis ovato-globosis, glan- 



