1919] SCIIXEIDER, NOTES ON AMERICAN WILLOWS. YI G9 



pilosa; ramuli etiam novelli glabri vel initio parce pllosuli; anionta mas- 

 calaplusmimisve scssilia, 1-3.5 : 1.5-1.8 cm., femiuca sub antliesi 1.2:0.5-0. 

 8 cm., fructifera 4-7:1.4-1.5 cm. magna, saepe pc<Iimculo brcvi foliolis 

 parvis 2-3 instructo suffulta; fructus e basi ovoidco conico-subrostrati, 

 C-8 (-10) mm. longi, stylis 0.5-2 mm. loiigis; pedicelli glandulam 2-3-plo 



supcrantes 2- *S. pJujUcifoUa. 



Fol-a normalia indistinctlus crcnato- vcl midulato-dcntata, subtcnuiora, 

 5.5:1.7 ad 10:2.7 cm. magna, supcrne saltem initio piibe tenui villosulo 

 grisco vel rufescenti praedita, dcmum costa cxccpta glabra vcl subglabra, 

 subtus glaucesccntia, initio pleraqucmagis quam superne villosnla, dcmum 

 glabrescentia; ramuli novelli (hornotinique ex parte) plusminusve villo 

 suli; amenta masculaignota, feminca adnlta vel fructifera 2-3:0.7-1 cm. 

 magna, pedunculo 2-4 mm. longo foliolis parvis paucis obsito snfFulta; 

 fructus c basi ovoideo conico-rostrati, ad 10 mm. longi, stylis O.C-1.1 mm. 

 longis; pedicelli glandulam ad 3-plo supcrantes, ad 2 mm. longi. 



3. S. paraleuca. 



Folia normalia superiora adulta subtus dense sericea vel sericeo-velutiua, saepe 



micantia. 

 Hamuli hornotiJii annotinique plusminusve distincte pruinosi, etiam novelli 



glabri vel parcissimc pilosl ct cito glabrescentes. 

 Tagina inferior foliorum omnium pilis strlctis brevibus adpressis dense (In 

 ramulis vegetis satis tenuiter argenteo-tomentosa, costa elevata flavesccnte 

 vel fuscescente subglabriore, folia adulta chartacea, majora anguste a<l late 

 lanceoluta vel oblanceolata, basi obtusa vel sensim acuta, aplce acuta vel 

 breviter acuminata, 4:0.9 ad 6:1.5 vel majora latiora ad 8-10:2-2.8 cm. 

 magna, integerrima vel satis indistincte undulato-crenata; petioli 2-7 (-10) 

 mm. longi; amenta mascula 2-3.5:1.1 cm. magna, feminca sub anthesi 

 2-2.5:0.7, fructifera 2.5-5:1 cm. magna; fructus ovoideo-subrostrati vel 

 ovoideo-conici, circ. 5 mm. longi, pedicello glandula subduplo breviore excluso; 



styli 0.8-1.5 mm. longi 7. S. suhcocruha. 



Pagina inferior (saltem foliorum supcriorum et surculorum) subtus pilis sericeo- 

 larmgginosis vix strictis longioribus vix vel hand adpressis velntino-tomen- 

 tosa, folia adulta in S. j}dlita saepe plusminusve glabrescentia et plantae 



allis signis divcrsac. 



Folia lingulato-lanceolata, oblanceolata, lineari-lanceolata ad lanceolata, 

 basi obtusa vel sensim cuneata, apice sensim acuta vel subacuminata, max- 

 ima surculorum late lanceolata, 3:0.G ad 5:1 vel ad 9:1 vel latiura 8:1.5, 

 maxima ad 13:3 vel 12:1 cm. magna, integerrima vcl indistinctesubcrcnata, 

 saepe margine subrevoluta, superne brevipilosa adulta costa excepta glabra, 

 nervis lateralibus subimpressis, subtus novella densissime sericeo-tomentosa 

 vel velutina, dennnn plus minusvc glabrescentia ct saepe tenuiter reticulata; 

 petioli 2-10 mm. lungi; amenta mascula ignota, feminea 2-5:1 cm. magna 

 et in fructu paullo majora; fructus maturi ovoideo-conici, subrostrati, ixmII- 

 cello glamlulam paullo vel ad dnplo superante excluso circ. 5 nun. longi, 

 quam ovaria subglabriores; styli l-1.5(-2) mm, longi . . G. 8. pellita. 



Folia infcrioribus oblongioribus exceptis pleraque lanceolata, basi plus 

 minusve obtuse cuncatu, apice acutiora, G:1.3 ad 8:1.G vel maxinui ad 

 11:2.5-3 cm. magna, integerrima vel obscure repando-crenulala, superne 

 cito glabrescentia vel fere glabra nervis lateralibus subimpressis, subtus 

 dense albido- vel subargenteo-sericeo-velutina, costa elevata glabresccnte; 

 petioli 4-14 mm. longi; amenta mascula 2-2.5: 1.5 cm., feminea sub anthesi 

 2-3:1 cm., fructifera ad 4.5(-G):1.5 cm. magna; fructus submaturi 4.5-5.5 

 mm. pedicello ad 1.25 mm. longo glandulam J ad duplo superante exccpto 

 longi; styli 1-1.5 mm. longi 8. S.hella. 



