140 DR. D. LYALL ON THE BOTANY 
Androsace septentrionalis, L. Arctic and cold Europe and Asia (Green- 
land excepted). 
Dodecatheon dentatum, Hook.? Cascades only. 
Eriogonum umbellatum, Torr. Cascade and Rocky Mountains south to 
Colorado River. 
Oxyria reniformis, Hook. All Arctic and all cold Europe, Asia, and 
America, and the Himalaya. 
Polygonum viviparum, L. All Arctic and all cold Europe, Asia, and 
America, and the Himalaya. 
Betula glandulosa, Ma. Arctic and cold E. and W. America. 
Salix cordata, Mhibrg. Arctic and cold E. America. Cascade and Rocky 
Mountains. 
—— glauca, L. All Arctic and cold Europe, Asia, and America. 
arctica, Pail. Arctic and cold E. and W. America. Cold Asia. 
—— phlegophylla, And. Arctic E. and W. America. Cold W. America. 
reticulata, L., vars. nana and vestita. Arctic and cold E. and W. 
America. 
Pinus flexilis, Torr. Cascade and Rocky Mountains. Colorado. 
Larix Lyallii, Parl., n. sp. Cascade and Rocky Mountains. 
Peristylus bracteatus, Lindl. Arctic Europe. Cold Europe, Asia, and 
N.E. America. 
Xerophyllum tenax, Nutt. Rocky and Cascade Mountains. 
Stenanthium, n. sp. Cascade Mountains. Kootenay River. 
Juncus xiphioides, Mey. California. Cascades and Rocky Mountains. 
Carex Mertensii, Prescott. Cascade Mountains. 
canescens, L. Arctic Europe and E. America. Cold Europe, Asia, 
and America. Extratropical S. America. Australia. 
— comosa, Boott. Cascade Mountains. U.S. America. 
——— verticillata, Boott. N.W. America. 
— tenella, Schk. Cold N.E. and N.W. America. 
—— Nardina, Fries. Arctic Europe and E. America. Cold Europe and 
E. America. 
Rossii, Boott. Cascade Mountains and Rocky Mountains. New 
Mexico. 
scirpoidea, Mz. Arctic and cold E. America and cold Europe. 
——- rigida, Good. Arctic Europe, Asia, and N.E. America. Cold Eu- 
rope and E. America. 
— Lyallii, Boott, n. sp. Cascade Mountains. 
—— emspitosa, L. (Boott!) Arctic Europe. E. and W. America. Cold 
Europe, Asia, and America. 
atrata, L., var. Arctic Europe. E. and W. America. Cold Europe 
and Asia. Top of White Mountains in America. Himalaya. 
nigricans, Mey. Rocky Mountains. 
Scirpus cespitosus, L. Arctic Europe. E.and W. America. Cold Europe, 
Asia, and America. 
