64 CALIFORNIA ACADEMY OF SCIENCES [P«oc. 4th See. 



CANADIAN ZONE— Continued 



Thomomys monticola monticola (J. A. Allen) H 

 Thomomys monticola premaxillaris Grinnell 

 Thomomys monticola mazama Merriam H 

 Zapus major Preble H 

 Zapus trinotatus alleni Elliot H 

 Erethizon epixanthum epixanthum Brandt T 

 Aplodontia rufa californica (Peters) T H 

 Eutamias amoenus amoenus (Allen) T 

 Eutamias amoenus monoensis Grinnell & Storer 

 Eutamias speciosus speciosus (J. A. Allen) H 

 Eutamias speciosus f rater (J. A. Allen) H 

 Eutamias speciosus inyoensis Merriam H 

 Eutamias senex (J. A. Allen) T 

 Glaucomys sabrinus flaviventris Howell 

 Glaucomys sabrinus lascivus (Bangs) T 

 Glaucomys sabrinus californicus (Rhoads) T 

 Lepus washing^oni klamathensis Merriam 



HUDSONIAN ZONE 



Species marked C occur also in the Canadian Zone; those marked A occur also 

 in the Arctic-Alpine. 



Plants ■ 



Pinus albicaulis Engelm. 



Pinus balfouriana Murr. C? 



Tsuga mertensiana ( Bong. ) Sarg. 



Polygonum shastense Brewer A 



Draba corrugata Wats. A 



Ribes montigenum McCl. 



Potentilla fruticosa Linn. C 



Fragaria sibbaldifolia Rydb. C 



Epilobium obcordatum Gray A 



Cassiope mertensiana Don 



Kalmia polifolia microphylla (Hook.) Rehder A 



Artemisia norvegica Fries 



Erigeron compositus Pursh A 



Erigeron ursinus Eat. A 



Macronema discoidea Nutt. C 



