338 BOTANICAL GAZETTE [april 



occurrence so far north in Alberta is interesting. In the north 

 a form with more hairy, almost shining silky leaves seems to 

 be not infrequent (see /. Macoun's specimen from Lower Arrow 

 Lake, no. 24569, O.). The species has usually been mistaken 

 for S. longifolia or 5. fluviatilis, but apparently it forms with 

 the southern var. Bolanderiana a well marked type in this 

 section, and I am not yet sure to which other group of it S. melanop- 

 sis is most closely related. Ball (Box. Gaz. 60:51. 191 5) speaks 

 of a "6'. fluviatilis-melanopsis''' aggregation in contrast with the 

 S. sessilifolia group, but I think S. melanopsis has very little to do 

 with the true S. fluviatilis. The specimens from Umatilla County, 

 Oregon, western slope of the Blue Mountains, in a swampy meadow 

 at Ukiah, June 24, 1908, W. Cusick (nos. 3260, 3261, fr. juv. ; N., 

 St.), need further observation. The young fruits show a short style 

 and are almost sessile. The main characters of S. melanopsis may 

 be gathered from the key. The species is not even mentioned by 

 Andersson (1858, 1867, 1868), and its identity has first been 

 revealed by Rowlee (1900), who erroneously states that "it is 

 particularly abundant along the Columbia River where Nuttall 

 saw it." I have not seen all the specimens cited by Rowlee, but 

 those of Coville, from Washington, Cowlitz County, north fork of 

 Lewis River, July 16, 1898 (no. 719, fr.; W.), which are not men- 

 tioned in Piper's Flora and which have leaves that measure up to 

 9:2.2 cm., seem not to represent typical S. melanopsis, and I have 

 not yet been able to identify them properly. In Herb. C. are sim- 

 ilar specimens collected by W. N. Suksdorf in W. Klickitat County, 

 "rocky bank of the Larm River," July 17, 1884. After all thej^may 

 be taken for a form of S. melanopsis with very broad leaves. In Cali- 

 fornia 6*. melanopsis is mostly represented by the following variety: 

 7b. S. MELANOPSIS var. Bolanderiana, nov. var. — S. longifolia 

 Bebb in Watson, Bot. Calif. 2:84. 1879, pro parte, non Muhl.; Jep- 

 son, Fl. Calif. 2:340. 1909, pro parte; in Mem. Univ. Calif. 2:178 

 (Silva Calif.). 1910, pro parte. — S. Bolanderiana Rowlee in Bull. 

 Torr. Bot. Club 27:257, pi. g, fig. 12. 1900. — S. exigua var. virens 

 Rowlee, I.e. 255, pi. 9, fig. 11.— S. argophylla Rowlee, I.e. 252, quoad 

 specim. Bolanderii (non Breweri!) no. 5031. — 5. fiuviatilis East- 

 wood, Handb. Trees Calif. 37. 1905, pro parte, non Nutt.; Sudw., 



