240 Sotru: List OF PLANTS COLLECTED ON PIKES PEAK 
TRUS STRIGOSUS TICE hie as CT OR AC as asta ae 10,000 12,000 
R 
SALIX BRACHYCARPA aoe Seite tacts cowie «Sara ans wees Bie be eal or ee 11,000 13,000 
Saxifraga rhombowWdee Greene 2% os eo oc ee ae es 12,000 13,000 
[MIcRANTHES rains (Greene) Small] . 
SELAGINGELA, DENSA VOD Velen tae eae kc Cue eRe eS 7,000 12,500 
SENECIO CH MUS) (GIOCNE 7 octet a eee ae we ees II,000 12,000 
SENECIO RREMOPHILUS Ai; Gay), Sis. cou ae ee 10,000 12,000 
SENECIO W MISBROLEIS Ay GlOV a) hc ink eee ta Lape ee I1I,500 
ISA a PRS RONE Sipe or a ie e  ewaay 9,000 11,500 
Stellaria pricier WA TEENS 2s ica sib i ees saa vor hy ote et ae ee 10,000 12,000 
E shapes Seah > Britton] 
TARA RISE CERO ho ce Ure soe Pete nary eek ie Saree 10,000 12,000 
(ALI@GUR UM ALPINGUM filo oe gai ees eg eed 12,000 13,000 
WERONICA ALETNA Ons | Pots ee aes 12,000 13,000 
NOTES 
The timber line on Pikes Peak occurs at an altitude of approxi- 
mately 11,500 feet. While the trees extend a little higher in a 
few places, only those plants which were actually growing above 
the protection of the timber were included in this list. I collected 
some species which have not been thought to enter the Arctic- 
Alpine Zone. Some of these undoubtedly belong there while 
a few have spread upward from the timber line owing to favorable 
local environments. In general, I find two localities in which the 
latter plants are to be found; one is the slope on which is located 
the pumping station at Windy Point, and the other is the glacial 
amphitheater which is partly occupied by Reservoir No. 7 of the 
Colorado Springs water system. Both these slopes are well 
watered throughout the growing season and are of southerly ex- 
posure, while huge boulders and outcropping ledges give ample 
protection from the drying and chilling winds that sweep the 
more exposed portions of the peak, and also serve as obstacles 
to the removal of the finer and richer soil, the products of both 
rock and vegetable decay. 
A third area of upward extension is the boggy ground along 
the carriage road west of the peak, where I found some hydro- 
philous plants at 13,000 feet, which heretofore were not supposed 
to grow much above the timber line. 
I found no edible vegetation of any consequence. Fragaria ‘ 
glauca ripened a few small, imperfect berries on a sunny bank 
just above the timber, while the leaves of Caltha leptosepala 
might serve for “greens,’’ though I found them rather leathery. 
The fruits of most of the plants are dry and the seeds are small 
