TORREYA 
August, 1912 
Vol. 12 No. 8 
ROADSIDE PLANTS OF A HIGH MOUNTAIN PARK 
IN COLORADO 
By Mary ESTHER ELDER 
The following is a report on a collection of roadside plants 
made by Professor Franci: Ramaley in the summer of 1911 at the 
University of Colorado Mountain Laboratory at Tolland, 
Colorado. The laboratory is situated in Boulder Park, Gilpin 
Co., about forty-seven miles from Denver and eighteen miles 
from Boulder. The altitude of Tolland is 8,889 feet. The list 
is of interest as showing the roadside weeds of a rather high moun- 
tain station.* 
Boulder Park is on the old Rollins Pass Road which goes from 
the plains across the range into Middle Park. This road has 
been used for the last forty or fifty years, by cattlemen, to drive 
cattle over into Middle Park for pasturing. Nederland and 
Central City, both old mining camps, eight and twelve miles 
away, respectively, may be reached by road from Boulder Park. 
Rollinsville, formerly a placer mining camp is five miles distant 
on the direct wagon road from the plains region, through Boulder 
Park, to the Continental Divide. The Moffat Railroad was 
built through the Park about eight years ago, thus making 
another means for the introduction of new plants. The soil 
along the roadsides is, for the most part, very dry and either 
sandy or rocky. Nearly all of the species here recorded occur 
in this dry soil. The following, however, are found in moister 
[No. 7, Vol. 12, of TORREYA, comprising pp. 145-174. was issued 11 July 1912.] 
* There are only two articles which the writer has found giving information 
Ciosi 
without Cultivation in Colorado, by Francis Ramaley, printed in Annales du 
Jardin Botanique de Buitenzorg, 1909, and Remarks on the Distribution of Plants 
in Colorado East of the Divide, by Francis Ramaley, reprinted from Postelsia, 1901. 
175 
