NOTES ON THE DISTRIBUTION OF SHASTA PLANTS. 
The study of the geographic distribution of animals and plants in the 
Sierra-Cascades can not be completed until authentic lists of species 
are brought together from several important localities from which at 
present no data are available. The need of such lists, with detailed 
altitudes and zone positioas, is particularly urgent in the case of 
detached mountains, as Shasta and Lassen, which are separated from 
each other and from the continuous ranges on either sid. by gaps 
low enough to be broadly filled by Transition zone species. The Boreal 
species of these mountains, being thus completely cut off from the 
nearest corresponding colonies, form islands in the long Boreal chain 
that stretches southward from British Columbia to southern California. 
The present imperfect list of the plants of Mount Shasta is offered 
as an humble contribution toward the needed material. It is based 
almost wholly on my own personal observations and is known to be 
far from complete. More pressing work along other lines made it 
impracticable to give much time vo plants, and the date of arrival at 
the mountain (the imddle of July) was so late that inany of the early 
flowering species had disappeared. The Boreal species, owing to their 
greater importance, have received most attcution; the Transition zone 
species least. In the case of Alpine and Hudsonian species it is believed 
that few remain to be added. 
I am indebted to Miss Lewanna Wilkins for collecting and pressing 
most of the plants preserved during the first six weeks of our stay on 
the mountain; and to John H. Sage for the use of a collection made 
by him during the same period. The plants obtained subsequent to 
August 8 were collected by Vernon Bailey and myself 
Although two seasons’ field work in the Cascade Range had given 
me a certain acquaintance with the more conspicuous plants common 
to these mountains and Mount Shasta, I was still much handicapped 
in the determination of the species, and not being a botanist myself 
was obliged to appeal to professional botanists for assistance. I am 
indebtec. most of all to Miss Alice Eastwood, curator of the herba- 
rium of the California Academy of Sciences, whose courtesy and 
promptness in identifying plants, sent her from time to time while I 
was still in the field, were of the utmost assistance. I am also particu- 
larly indebted to Prof. HE. L. Greene, of the Catholic University at 
Washington, who has taken the trouble to examine a large number of 
species, and to describe several which proved to be new. Other bota- 
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