154 NORTH A.MKRICAX FAUNA. [no.16. 



Toii<iues of it push up ou warm southerly slopes to about (IJiOO teet' 

 altitude, and it descends on the west sloi)e to about 4,200 feet (half a 

 mile east of Sissou), and on the south slope to 3,G00 feet (near McCloud 

 Mill). Along^ the east base of AEount Kddy, where it is sheltered from 

 the afternoon sun, it a])pears about 2 miles north of Sisson (altitude 

 3,700 feet), and continues northerly for many miles. 



Ceanothus integerrimus H. c^- A. California Lilnc. 



Common in jtarts of the Transition zone, notably in Squaw Creek 

 Valley near McCloud Mill, and in the upi)er Sacramento \'alley a little 

 below Sisson, but very scarce or absent on the slopes of Shasta proper. 

 Ldce C. cordulaiiis it seems to be kept out by some unknown cause, 

 l)Ossibly choked out by other si)ecies. Perhaps the soil is too dry for it. 



Ceanothus (Cerastes) prostratus Benth. S(piaw Cari)ct. 



In following- the Sacramento Canyon northward. Squaw Carpet was 

 first seen at the 'The liOO}),' a few miles south of Sisson, whence it 

 occurs in greater or less abundance throughout the i^onderosa ])ine 

 forest and manzanita chaparral to the lower slopes of Shasta, where ou 

 the southwest side it reaches up to 5,200 feet. 



Rhamnus californica Esch. (This form may be R. rubra Greene.) 



Scarce and confined to low altitudes in the Transition zone. Found 

 by Vernon Bailey in S(iuaw Creek Valley below 4,000 feet. Specimen 

 lost. 



Hypericum anagalloides C. & S. Dwarf Hypericum. 



Common in spots in wet places in the Hudsonian and Canadian zones. 

 It was most common in the second meadow on Squaw Creek, and by 

 no means rare near Wagon Canq). and was in flower in late July and 

 throughout August. 



Viola blanda Willd, White Violet. 



Collected by ]\Iiss Wilkins in the middle meadow on Scpiaw Creek, 

 at an altitude of 7,."")00 feet. Not observed elsewhere. 



Viola purpurea Kellogg. Al])ine Yellow Violet. 



Common on dry rocky slopes on i)uniice soil from some distance 

 below timberlint^ upward, on warm southerly exposures, to '.>,300 feet. 

 When we reached tlie mountain, the middle of July, its yellow Mowers 

 were conspicuous, although even at that time the species had nearly 

 ]»assed llowcring. Its fruit and dark green leaves lemaincd as late as 

 the latter part of Sej)tcmber, shari>]y ontlincd against the whitish 

 stones and pumice of the bleak and barren upper sloi)es, where a violet 

 seemed singularly out of place. (Identified by Miss Eastwood and 

 I'rofessor (Ireene.) 



' For its extreme iijipci limit, on hot canyon slopes, see remarks wnAeT Arctosta- 



phijIdH iKihila. p. 1.">S. 



