OCT., 1899.] PLANTS. 167 



Erig-eron compositus trifldus Hook. 



C'ommou on tlie sl()i)os of broken sluile and puiiiic<' al)ovc tiiiibeiiine, 

 where it often grows iu mats of Silene si(l:.s(l<>rfi close under the edges 

 of roeks. On the south side of Shasta it was not observed lower than 

 9,200 feet, but on the cold nortli slope of Shastina it was found as low 

 as 8,000 feet. Its yellow flowers are rather conspicuous, and were 

 noted from the latter part of July until late in August. (Identified by 

 Professor (xreene.) 



Erigeron inornatus Gray. 



This tall and much-branclied Erigeron was found in ^lud Creek 

 Canyon and along- Squaw Creek, a little below the fall, at an altitude of 

 6,800 feet. (Identihed by Professor (xreene.) 



Eupatorium occidentale Hook. 



Collected by Vernon Bailey and Miss Wilkins on Horse Camp Trail 

 on the boundary between the Transition and Canadian zones. (Identi- 

 fied by Professor (ireene.) 



Heleniastrum rivulare Greene. 



Common on damj) ground at Wagon Camp, on the boundary between 

 the Canadian and Transition zones. (Identified by Miss Eastwood.) 



Hulsea nana Gray. 



A common and characteristic plant of the barren alpine slopes above 

 tiiiiberline, where its showy yellow heads are conspicuous among the 

 bare rocks. Its leaves are sticky, crinkled, and relatively smooth. It 

 was found on most of the high ridges above timberline all the way 

 around the mountain, and was obtained on the north side of Shastina 

 at an altitude of 9,000 feet. Its highest limit on the southwest side, as 

 observed by Vernon Bailey, is 11,300 feet. (Identified by Miss East- 

 wood and Professor Greene.) 



Hulsea larseni Gray. 



Common on the pumice slopes above timberline, growing with H. 

 nana,, from which it may be easily distinguished by the leaves, which 

 are covered with a dense whitish ])ubescence. (Identified by Professor 

 Greene.) 



Madia bolanderi Gray. 



Very common in the marsh at Wagon Camj), where it was in blossom 

 all summer. Common also along some of the streams in the upper 

 part of the Transition zone, where the low temperature resulting from 

 the water carries narrow tongues of Canadian zone species down to alti- 

 tudes below their normal limits. (Identified by Miss Eastwood.) 



Senecio trigonophyllus (ireene. 



Common along Panther Creek in the Shasta fir belt. (Identified by 

 Miss Eastwood and Professor Greene.) 



