48 BOTANICAL GAZETTE [januasy 



N.Y. Bot. Gard. 1:261. 1899; Ball in Coult. and Nels., New Man. 

 Rocky Mt. Bot. 139. 1909. — S. aemulans v. Seemen in Bot. Jahrb. 

 29: Beibl. 65:28. 1900. — A typo praecipue differt: ramis crassiori- 

 bus (interdum ad 19mm. crassis), foliis majoribus vulgo 1.5-3.5 

 cm. longis et 0.8-2 cm. latis interdum minus reticulatis forma ut in 

 typo valde variabilibus (lanceolatis saepe apice subacutis), petiolis 

 ad 1 .8 cm. longis; amentis pluri- vel multifloris masculis 7-12 mm. 

 longis pedunculis vulgo longioribus sparse pilosis exclusis, femineis 

 8-18 mm. longis fructiferis fere ad i cm. crassis. 



The type came from Gray's Peak in Colorado (Ig. Rydberg, 

 August 1895, m.; N.), and it is most abundant in the Rockies of 

 this state, reaching its southernmost point on the Truchas Peak of 

 the Taos Mountains in northern New Mexico. Northward its 

 range extends through western Wyoming, Yellowstone Park, 

 and southern Montana to the vicinity of Laggan in Alberta and 

 Skagit Valley in British Columbia, while toward the west it is 

 found on Mt. Rainier in Washington, on the Strawberry and the 

 higher Wallowa Mountains in eastern Oregon, furthermore on the 

 East Humboldt Mountains in northeastern Nevada, and also in 

 Boxelder and Utah counties and on the La Sal Mountains in Utah. 



Sect. 2. Herbaceae Borrer in Hooker, Brit. Fl. 432. 1830 

 (Sect. Chamaetia Dumortier, pro parte, see note 8 on p. 43 ; sect. 

 Retusae Kerner in Verh. Zool. Bot. Ges. 10:195 [Niederostr, 

 Weid.]. i860; for further literature see Schneider in Sargent, 

 PL Wils. 3:142. 1916). — As I have already explained {I.e. 143), it 

 seems to me impossible to separate the sect. Retusae from the 

 Herbaceae, but there are the following species which have been 

 added to this group or might be regarded as closely related to its 

 members: S. cascadensis, S. Dodgeana, S. glacialis, S. Peasei, S. 

 polaris, S. phlebophylla, S. rolundifolia, and 5. Uva-ursi. Of these 

 species S. rotundifolia seems to show the most intimate affinity with 

 S. herhacea, but it is distinguished by the persistent leaves, a 

 character also found in S. phlebophylla, S. caseadensis, and S. Uva- 

 ursi. From the last three species 6*. Uva-ursi seems to be widely 

 separated by its bicolor leaves and the single stamen of the male 

 flowers, while on the other hand they all have bicolor or fuscous 

 bracts which are concolor, greenish or yellowish (or partly purplish 



