12 
COLORADO. 
The larger part of the month of August was spent in Colorado visit- 
ing Clear Creek Canyon about Georgetown, Silver Plume, Gray’s Peak, 
and Idaho Springs. Our work was not eonfined to the canyon and its 
branches, but much collecting was done on the mountain sides and in 
a few instances even above timber line. 
The canyon is narrow and gives but little place for natural meadows. 
There is one of some extent, however, just below Georgetown, where 
the valley is widest. This was mostly used as pasture for the donkeys 
and village cows. Along Clear Creek were found Poa flava Linn., 
Beckmannia eruceformis Host., Calamagrostis neg- 
lecta Gærtn., Calamagrostis inexpansa A. Gray, and 
sod Sn alba L., but m of the grasses consisted 
shorter Bum s Sporobolus „ 
Seay Bouteloua adan Torr., Koeleri 
cristata Pers., Alopecurus occidentalis Scribn., se 
Poa alpina L. Ina valley 3 miles north of George- 
town, near Empire, was found the only meadow 
we saw that eould be used as hay land. The 
most common species here were Danthonia parryi 
Scribn., Poa pratensis L., Muhlenbergia gracilis 
Trin., Elymus triticoides Nutt., Agropyron pseudo- 
repens S. & S., A. spicatum molle Scribn. & Smith, 
and Koeleria cristata Pers. (fig. 8). 
Hay land is scarce in the region about George- 
town and Silver Plume, but the valleys, canyons, 
and mountain sides furnish some pasture. The 
grass flora is especially rich along the mountain 
brooks. The genus Poa is well represented and 
numerous species, varieties, and forms are ims 
with almost everywhere. Other common gra 
are Agropyron pseudorepens S. & S. cds 
Fig. 8.—Prairie June-grass Canadensis Beauv., Calamai purpurascens 
, oria cristata). R. Br., Festuca ovina L. (several forms), Bromus 
ciliatus L., Bromus ciliatus purgans A. Gray, Trisetum montanum V asey, 
Trisetum subspicatum P. B., and Phleum alpinum L. To these might 
be added several species of Carex which furnish indifferent forage. 
In the vicinity of Idaho Springs, which is situated at a considerably 
lower altitude, we found many of the species just mentioned and sev- 
eral not found in the higher mountains, as, for instance, Cinna pendula 
Trin. Stipa robusta Scribn., Sitanion elymoides Rafin., and Melica 
| parvi ¡flora Scribn. 
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FOOTHILLS AND PLAINS. 
Me spent two days at Golden and one day each at Mountain Meadow, 
Boulder, and La Salle. The first three places are situated at the base 
of the mountains and the last on the plains. Our collections at the 
