SoTH: LIST OF PLANTS COLLECTED ON Pikes PEAK 241 
and contain little nourishment, though they are the chief food 
supply of the mice and rats and other rock-dwelling animals. 
Many species store reserve supplies in their thickened roots, 
from which they spring up quickly in the early summer, but I 
found none that were palatable or of any value for human food. 
Allium pikeanum Rydb. occasionally bears pure white flowers. 
Antennaria media Greene. Staminate plants of this species 
seem to be lacking on this peak, as diligent search in many dif- 
ferent localities has failed to discover them. 
Chamaenerion augustifolium (L.) Scop. occurs much higher than 
usually listed. But the colonies seem to spring up from wind- 
blown seed from below; they flower very late and probably never 
seed themselves in this zone, although the individuals may live 
Over a winter or two. 
Erigeron simplex Greene includes the small erigerons that have 
been referred to E. uniflorus L. as well as the larger forms referred 
to E: leucotrichus Rydb. I was convinced that these apparently 
different plants were of the same species, and inquiry of Dr. 
Rydberg brought me the information that E. uniflorus L. was 
not found in Colorado at all and that E. leucotrichus Rydb. was 
an unusually large form of E. simplex Greene, to which all these 
varying forms should be referred. 
Gentiana plebeja Cham. [Amarella plebeja (Cham.) Greene] 
varies so as to be almost unrecognizable in some of its forms; 
occasionally almost white, it runs through many shades of blue 
and mauve to deep purple, and varies from a robust, branching 
plant to a single blossom flowering from the ground long after 
the first snows of autumn. 
Lewisia pygmaea (A. Gray) Robins. [Oreobroma pygmaea 
(A. Gray) Howell] I find abundant in damp, gravelly situations 
rather than on dry mountain sides, as stated by some authors. 
Mertensia alpina (Torr.) Don is known locally as ‘‘ Pikes 
Peak forget-me-not.’’ There is a rare pure white variety, the 
widely separated plants bearing all white clusters year after year. 
Mertensia ciliata (Torr.) Don includes M. picta Rydb. and is 
the tallest plant above the timber line on Pikes Peak. 
Ribes lentum (Jones) C. & R. has, in its alpine form, rosy rather 
than ‘‘greenish’’ flowers; it is quite a conspicuous plant on the 
edges but seldom bears fruit above the timber line. 
