454 RYDBERG: PHYTOGEOGRAPHICAL NOTES 
Common to the Southern and Northern Rockies 
Chondrosea Aizoon Antiphylla oppositifolia 
Leptasea austromontana Oxyria digyna 
Restricted to the Southern Rockies 
Anticlea coloradensis Polemonium delicatum 
Aquilegia saximontana -Edwinia macrocalyx (Utah) 
Polemonium pulcherrimum '  Senecto petrocallis 
3. TALUS 
In many places, under the perpendicular cliffs, there have gath- 
ered rather steep slopes of talus. Where this consists of larger rocks, 
the flora is the same as that of the rock-slides, but where it consists 
of small fragments and especially where there is a certain moisture, - 
this talus has been taken possession of by certain plants, which 
can be regarded as forming a distinct formation. The most 
common of these plants are: 
Common to the Southern and Northern Rockies 
Carex Geyeri Anemone tetonensis 
Juncus Drummondii Epilobium alpinum 
Parryt e Hornemannii 
Alsine laeta 
Restricted to the Southern Rockies 
Anticlea coloradensis 
Restricted to the Northern Rockies 
Viola flavovirens 
NEw York BoTAnicaL GARDEN 
