23% JOURNAL OF THE ARNOLD ARBORETUM [vol. i 



salloin initio, dense adpresse ar^cntco-sericea, dcin plu.sniinusve cinereo- 

 viridia, paullo vcl distinctius glabriora, pctioli ad 7-10 mm. longi; sti])ulae 

 in raniulis vegctioribus ad 5 mm. longae, semi-ovato-lanceolalae, acutae, 

 dense glandul()so-(subfimbriato-)denliculatae; amenta (rnascula nondum 

 visa) fcminea ad 3:1.'2 cm. magna pedunculo brevi folia ad '3 satis normalia 

 gerente excbjso; ovaria phisminusve dense sericeo-villosula vel satis gla- 

 brescentia, sessilia vel subsessilia; styli 1-1.25 mm. longi, bractcae intcr- 

 dum plusminusve flavo-brunneae (an formae liybridae?) fructus 4-5 mm. 



longi. 



After all var. idahoeyisis hardly rei)resents more tlian a vigorons variety 



of S. WoJfii with pubescent capsules. Tidestrom's No. 3G70 has g1al)rous 



fruits, but leaves like var. idahocnsh, for which it is taken by Ball. On the 



other hand in S. Woljii the ovaries are not always entirely glabrous as T said 



in the description given above. There may be forms of hybrid origin, and 



some forms of the Cordatae which liitherto liave been referred fo *S'. pseudo- 



rayrsinitcs or S. pscudocordata by Ball and Rydberg are often very similar 



to var. idahocnsis at least when without fruit and in leaf only. 



The folhnving specimens seem to belong to this variety: 



Idaho. Klinorc County: Trinity Lake region, wet meadows, August 27, 1910, 

 J. F. Mfwhride (No. 638, fr.; G.; ''low clumps"). Blaiu County : Forks of Wood 

 River, alt. 1800 m„ July 2o, 1895, L. F. llcndcrson (No. 3399, type; W.). Fremont 

 County: Upi)er Teton Canyon, 1872, •/. M. Coulter (st.; ^Y.; fornui iiu^'rla) fr. 



Wvo.uixo. Titon Forest Reserve, Sheep Mt., August, 1879. F. Tweedy (No. 293, 

 f.,fr.; N.). Without locality, along mountain brook, near camp 1 1, August 19, 1893, 

 J. A\ Rose (No. 404, ex parte; f.; W.; mixed with fruitint^ specimen representing 

 probably a hybrid of this variety). Yellowstone Park: Head of Swun Lake 

 Valley, J^ily 9» 1888, F. IL Knoivlton (fr.; C, W.); borders of ponds, July 0, 1894, 

 J. //. Burglchaus (No. 12, fr... C); without locality, Sylvan Lake, 1911, C. A. Rnj- 

 yiolds (st.; C); September 5, 1904, J. G. Jack (st.; A.); Indian Creek, June, 1881, 

 F. Turcdy (No. 481, f.; W.); about 2300 m., common, July, 1890, C. S. Sargent (fr. 

 im.; A.);" Liueoln Gulch, Auf^ust 12, 1790, A. Nelson (2390a; st,; A.); August IG, 

 1903, E. /I. Mcarnes (No. 3304, fr.; W.); East de Lacy*s Creek, 2,300 m., August 10, 

 1897, Rydberg & Bessey (Nos. 3910, st. 39Gla st.; N., forma j)orro ohservanda); 

 Lewis River, common, August 9, 1899, A. & E. Nelson (No. 0387, fr.; G., N.; "Ju 

 clumps, 0.9 to 2.1 m., high"); Re<l Mts., Yellowstone Lake, 1872, J. M. Coulter 

 (Hayilen Surv(\v, fr., W.). 



IVIoNTAivA. Gallatin County: lower basin of the (Jallatiu, marsliy places, 

 2150 m., July 7, 1898, J, IF. Blankinship (fr.; Cor.; shrub); Bald Mt., July 21, 1880, 

 S, Watson (No. 372 b.; f., m.; G.; forma satis incerta) (lorihus maseulis una tautum 

 glaiidula iustructis. 



OitEGON, Wallowa County: bank of Wallowa River, moutli of Hurricane 

 Creek, June 11, 1900, W, C. Cusick (No. 2100, f.; C. G., Jepson, N. M., W.; dis- 

 tributed as S. Cuskkii Rowlee) ; near Lostinc, June 18, 1907, F. V. CovlUc (No. 2433, 

 fr. W.; *'in a wet gravelly bottom growing with Betida glandulosa''). 



ViEXNA. January, 1920. 



