162 JOURNAL OF THE ARNOLD ARBORETUM [vol. i 



commiitaia, likewise sheet 7745 which Ball also refers to var. denudata 

 though tlie branchlets partly look more like those of var. sericea. On the 

 other hand sheet 998 (which bears No. 1304 of Cusick) can be taken for 

 var. dertndaki, as also the material on the sheets 999 and 1000, which repre- 

 sent Cusick's No. 1304. After all I am not well enough acquainted with 

 the variability of S, commutatato make a decisive statement as to the taxo- 

 noniic value of var. denudata and its true relationship. Provisionally, I 

 refer to it the following forms which certainly need a thorough investigation 

 in the field. 



OiiEGON. Baker County : Eagle Creek Meadows, August, 188G, IF. C. Cusick 

 (No. 1301 m., St.; sheets 91)9-1000 In C; 1304 \ f ., ex parte; sheet 998 in C. ; without 

 number, f., sheet 7742, 7741, st. in C; which I regard as the type as already ex- 

 plained); Eagle Creek Mts., about 2300 m., alt., August and September, 1881, same 

 coll. (No. 908, f., at least partly; sheet 205445 in C; this form resembles much 

 Cusick's No. 2302 but in No. 9(18 the leaves are green beneath: named by Ball var. 

 denudata. in the speeimen in Herb. G. the fruits are pubescent); highest Powder 

 River Mts., 1897, same coll. (No. 1810 ^ fr.; Cor.; foliis anguste lanceolatis), — 

 Union Coun ty : Wallowa Mts., Bear Creek Watershed, meadow in Basin Creek, 

 2050 m., September 8, 1907, F. F. CovUle (No. 2481, f., fr.; W.; "the specimens had 

 recently emerged from a snowbank*'; the pedicels are pilose). Harney County : 

 Highest Stein Mts., wet sides near top, July 5, 1898, W, C. Cusick (No. 2009, m., f.; 

 Cor., Pu.; stomata in pag. sup. foliorum numerosa, pedlcelli pilosl). 



Wasuixgton. Pierce County: Mt. Rainier, about 2100 m., August 12, 1884, 

 Piper ii- Smilh (No. 701, fr., C. [sheet no. 5205]; Nos. 702 seem to be typical S. Bar- 

 clayi); same Mt. August 1890, E, C. Smith (f., sheet G582 in C; rather typical com^ 

 miitata or a transitional form). County unknown: Cascade Mts., Lake south of 

 three Sisters, meadow at head of lake, August 7, 1897, Coville & Applegate (No. 551, 

 St.; W.; forma satis incerta). 



Bebb's third variety is 5. commufafa var. puhcrula, in Bot. Gaz. xiii. 

 Ill (1888) of which he says: *' Capsule thinly puberuhnis. Transition to 

 S. calif arnica.'^ He does not cite a type nor is there a specimen in his her- 

 barium. There are apparently forms of S. commufafa with more or less 

 pubescent ovaries and fruits, but it is difficult to separate them from S. 

 Eastwoodiac unless one has male specimens. So far as I can judge by the 

 rich material I have seen, the filaments of true S. commutata are alwavs 

 glabrous while those of S. Eadicoodiae are more or less distinctly pilose, at 

 least at tlie very base. There are, however, forms from those regions where 

 the two species seem to meet which at present I am unable to refer to one 

 species or the other. See also under 5. Eastwoodiac. It may be possible 

 that Bebb had before him a form of the latter species, but I am inclined to 

 refer to var. pvberula the following, at least provisionally. 



Idaho. Region of the Cceur d'Alene Mts., Divide between St. Joe and Clear- 

 water Iliver, July 11, 1895, J. B, Leiherg (No. 1246, f.; G., N., W., ovariis sparse 

 pilosis). 



Oregon. Grant County: Strawberry Mts., streambank, 2G00 m., July 29, 

 1910, C. W, Cusick (No. 3o8(), f., fr.; G., M.; forma amentis ad 8 em. longis, pedun- 

 cul ) ad 2 cm. longo exchiso, fructibus laxe villosis; bogs, 2660 m., same date and coll. 

 (No. 3.>8.>, m.; C; G., M.,N.; filamentispl. m. coalitis glabris. Union County; 

 without exact locality (see letter quoted on p. 160), same coll. (No. 1304 b, same as 

 No. 997, fr. im.; C; referred by Ball to 5. caUJornica)\ Wallowa Mts.; August, 1896. 



