RYDBERG: PHYTOGEOGRAPHICAL NOTES 99 
NORTHERN ROCKIES 
Salix Dodgeana 
Alsine americana 
Leptasea Van Bruntiae 
Drymocallis pseudorupestris 
Eritrichium elongatum 
SOUTHERN ROCKIES 
Condrophylla Fremontti 
Anthropogon barbellatum 
Eritrichium argenteum 
EUROPEAN ASIATIC 
wn 
retusa 
A. dichotoma 
L. bronchialis 
D. rupestris 
E. nanum E. villosum 
EUROPEAN ASIATIC 
C. humilis 
A. ciliatum 
E. nanum E. villosum 
Still other species are probably derived from, or have the same 
origin as, American glacial or American arctic plants. 
SOUTHERN ROCKIES 
Poa pudica 
Festuca minutiflora 
Salix pseudolapponum 
Alsine polygonoides 
Cerastium Earlei 
Caltha rotundifolia 
Draba pectinata 
Rhodiola polygama 
Polemonium delicatum 
Castilleja Haydeni 
NORTHERN ROCKIES 
A gropyron andinum 
A gropyron latiglume 
Salix cascadensis 
Cerastium pulchellum 
Caltha leptosepala 
Caltha cheledoni 
Phacelia Lyallii 
Polemonium parviflorum 
Erigeron pedatus 
P. arctica, glacial 
F. brachyphylla, glacial 
S. glaucops, glacial 
A. laeta, glacial 
C. Behringianum, glacial 
C. biflora, subarctic 
D. andina, glacial 
R. integrifolia, glacial 
P. pulcherrimum, glacial 
C. pallida, arctic 
A. biflorum, glacial 
A. biflorum, glacial 
S. arctica or S. anglorum, arctic 
C. Behringianum, glacial 
C. biflora, subarctic 
C. biflora, subarctic 
P. sericea, glacial 
P. pulcherrimum, glacial 
E. multifidus, glacial 
