162 NORTH AMERICAN FAUNA. [no. 16. 



Castilleja affinis Hook. \' Arn, 



A plant collected in the Hudsouiaii zone near timbeiline just north 

 of lied Butte by Yeruon Bailey has been identified as this species by 

 M. L. Fernald, Since the typ*' locality, of (i(fi)iis is the low coast sti'ij) 

 near iSau Francisco or Monterey, the typical tbrin won Id hardly be 

 expected to occur in the hi<jh tiniberline region of Shasta. 



Orthocarpus pilosus Watson. 



Common in ])laces near tiniberline, particularly near 'The [South] 

 Gate,' between the heads of Panther Creek and Stpiaw Creek. (Iden- 

 tified by M. L. Fernald.) 



Mimulus implexus Greene. 



Abundant in wet places throughout the Hudsonian zone, reaching 

 its greatest perfection in the neighborhood of timberline. In the shal- 

 low rapids of some of the mountain rivulets it grows in such profusion 

 that its leaves form extensive mu(;ilaginous i)atches, whi(;h completely 

 fill the beds of the streams. Its large and showy yellow flowers were 

 in blossom from the latter part of rluly until the end of September. 

 (Identified by Professor (irreene.) 



Mimulus moniliformis Greene. 



Two forms of large yellow }[imiiliis grow in the marsh at Wagon 

 Camp, in the lower edge of the Canadian zone. (Identified by Professor 

 Greene.) 



Mimulus tiling! (Kegel.) Greene. 



Common in the marsh at Wagon Camp. (Identified by Professor 

 Greene.) 



Mimulus primuloides Benth. 



Common in iiatches in marshy ])laces and along streams in the Cana- 

 dian and Hudsonian zones, but much more common in the Caiuidian 

 than in the Hudsonian. It was abundant at Wagon Camp and also in 

 some of the heather meadows along Squaw ('reek and other streams. 

 (Identified by Miss Eastwood and Professor Greene.) 



Pentstemon menziesi Hook. 



One of the most characteristic and widely distributed jjlants of the 

 higher slopes, where it is common among the bare rocks all the way 

 around the mountain. It is common in the Hudsonian zone in the 

 neighborhood of tiniberline, but much more abundant in the Alpine, 

 and was found by Vernon Bailey as high as 10,200 feet. This species 

 is easily distinguished from the other Alpine species of the region by 

 its smooth entire leaves and relatively small bluish or violet blue flow- 

 ers, which become pink or reddish with age. (l<lentilied by Piofcssor 

 Greene.) The plant is by no means typical, but seems to be interme- 

 diate between menzirsi and ihiridsotii. It may be a distinct sjx-cies. 



