146 NORTH AMERICAN FAUNA. [no. 16. 



Silene suksdorfi Robinson.^ Alpine Catch fly. 



An ali)ine species coiiiinon in scattered tufts, wliicli form small corn- 

 X)act mats nnder the ed<ies of rocks, well above timberline. Often 

 mixed with IJrigeroii conqMsitus. (Identified by Dr. B. L. Eobinson.) 



Aconitum columbianum ISTutt. Monkshood. 



Common in a marshy jjlace in the Shastn fir forest at Wa^on Camp, 

 where its tall wands of handsome blue llowers were conspicuous in July 

 and its fruit in September. 



Aquilegia truncata Fiscli. & Mey. Red Columbine. 



Common near Wagon Camp, in the up})er part of the Transition 

 zone. (Identilied by Professor (Ireene.) 



Delphinium sonnei Greene. Larkspur. 



Common in moist spots in the Shasta fir forest near AVagon Camp, 

 and also in the canyon of Ash Creek. (Identified by Professor Creene.) 



Paeonia browni IJougl. Wild Pa'ony. 



Occurs sparingly in the upper part of the ponderosa ])ine forest 

 (Transition zone), particularly iu the neighborhood of Wagon Camp. 



Pulsatilla occidentalis Watson. 



Common in places on the higher slopes (Hudsonian zone), paiticu- 

 larly where the snow lies late. It blooms as the sno\\' recedes, leaving 

 a handsome globular head of feathery jjlumes which waves in the 

 breeze long after the season of flowering. 



Bikukulla unifiora ( Kellogg) Howell. 



Reported ])y Miss Eastwood from above timberline on Horse ('amp 

 Trail; not found by us. 



Arabis platysperraa (^ray. Flat-pod Arabis. 



The commonest and most widely distributed crucifer of the higher 

 sloi)es of Shasta, where it occurs on stony sloi)es and along the edges of 

 the heather beds from the lower edge of the Hudsonian zone ui)ward 

 on warm sloi)es to 10,200 feet. Its extreme vertical range ai)pears to be 

 about ;j,000 feet. (Identilied by Miss Eastwood.) 



Cardamine bellidifolia pachypbylla Coville. 



This small alpine crucifer, with white flowers and rather broad dark 

 green leaves, is nowhere abundant, but was observed here and there 

 above timberline, both on the main peak of Shasta and on Shastina. 

 (Identified by F. V. (Coville.) 



Cheiranthus perennis (Coville) Creene. [ = Er!/si)in(m asprrxm pcrenne 

 (^oville.J 

 Vernon l>ailey and I found this coarse yellow-flowered crucifer at 

 timberline on the north slope of Shastina July L' 1, but did not observe 

 it elsewhere. (Identilied by Professor Greene.) 



1 Jiotuuical Gazette, vol. 16, p. 44, pi. 6, 1891. 



