70 JOURNAL OF THE AIIXOLD ARBORETUM [vol. i 



Raniuli lioriiotiiii ct sacpc ctiam annotini plusminusvc pilosuli vol tomcntelli, 

 nunquam (vcl rarius Icvissime) pniinosi. 



Folia subtus ut hi S. hclla velutino-tonientosa, obovata, obovato-oblonga. 

 rlliptico-oblaiiceolata vcl rarius elliptica, apice obtnsa vol (ploraciue sublto) 

 late acuta, ba^i cuneala ad obtusa, niajora latiora ad 0:3, ol)longiora ad 

 8.5-9:'2 *^2.8 cm. magna; petioli 5-10 mm. longi; stipulae in ramnlis.vcgctis 

 scmiovato-lanccolatao, petiolo \ vol vix breviores;fructus cllii)tico-subrostrati, 

 5-7 mm. longi, pcdicello ad 1.5 nun. longo cxrluso; styli 0.5-1 mm. longi. 

 9. *S. Drummondiana, 



Folia subtus ut in S. suhcoeruica sericoo-tomcntosa* anguste oblanccolata, apice 

 obtusa ad acuta, basi cuncata, majora angustiora 6.5-9:1.2 vel ad 10:2.5 cm., 

 latiora ad 5:1.3 cm. magna; petioli vix ultra 7-8 mm. longi; stipulac tantum 

 in .surculis distinclae, semicordatae, ad 11 mm. longae; fructus 4.5-5.5(-0) 

 mm. longi pcdicelU) ad 1.25 mm. lungo excluso; styli U.75-1 mm. longi. 

 10. S. Jepsonii, 



EXUMERATIO SPECIERUM 



1. S. pulchra Cbaniisso in T.innaea, vi. 543 (1831). — rovillo in Proc, 

 Wash. Acad. Sci. iii. 319, t. 38 (1901), excl. syn. ex parte. — Ostcnfeld in 

 Dansk. Vidensk-Selsk. Skrift. i. Math. -Nat. Kl. 190!). no. 8, 31 (Vase. Fl. 



Vrct. N.-Ani. Gjiia Exp. 19U4 (!) (1910), excl. syn. ex parte. — S. / 



crata u. suhglauca Andcrsson in De Candolle, Prodr. xvi.^ 244 (1808). 

 *S. pJiylicoidea Bel)b in Hot. Gaz. xiii. 18(5, t. 10 (1SS8), pro parte nuixinia, 



non Andersson. 



The ty])e of this species came from Cape Espenl)erg, Alaska, and Cha- 

 misso also collected specimens on St. Lawrence Island. Not having seen 

 the ty])e which is j)reserved in the herbarium at IJerlin, I rely on specimens 

 from Port Clarence and St. Lawrence Island to supplement the ample 

 description of the author. Judging by these sj)eclniens I believe that the 

 ty])ical form is one with glabrous or soon glabrescent twigs of which the 

 one-year-old branchlels show very little or no trace of pubescence. But 



there occurs a pnibescent form which I shall describe later. Chamisso'i 

 name *S^. pulchra has })een overlooked by most of the salicologists; it is not 

 even mentioned In the Index Kcwensis, and in 18C(5 Wimmer & Krause 

 dcscril)ed another S. pulchra which has nothing whatever to do with our 

 plant. Andcrsson mentioned Cliamisso's species only in 185S (in Of v. 

 Svensk. \'et.-Akad. Forh. xv. 120) under S. lapponum to which he refers 

 specIiKens collected by Peecl:ey at Kotzebue Sound unknown to nie, in the 

 following numner: " Non siiu^ hesitatione permulia hie refero Salicem earn 

 'pulchram,' de qua Chamisso, a se in America arctica plurles lecta, men- 

 tionem fecit. . . . Amenta sessilia, caj)suhie non pedicellatae, sed folia, 

 fere ut in S. phylicifolia, utrinque acutata viridia subtus pallidiora glaber- 

 rhua, stipulae lineares persistcntes. Unicum tantum specimen hujus for- 

 mae ex herb. Berohnensi (a Chamisso lectuni) vidi." In 1807 and 18G8 

 Andersson does not mention this name, and I have not yet been able to 

 discover to which species he referred Chamisso's si)ecimen. He described, 



■ B 



In 1858, a S. phylicoidcs (in Ofv. 1. c. 123) from specimens collected by See- 

 mann: Awatcha Bav, '' in arctica America occidentah." The Awatcha 



