June 8, 1907 65 
to Colorado. Casézlleja has grown from nine species to twenty- 
seven, Eriogonum from twenty-seven to fifty, and Delphinium 
from five toeighteen. Aconitum Columbianum has become five 
species. The number of species in Aster, Erigeron and Solt- 
dago are greatly increased, and so through the book with the 
larger genera. 
Quite a number of this long list of additions are earlier de- 
scribed species which have been discovered in Colorado, and 
many species have been reinstated which were described long 
ago and later suppressed. For example, what was called 2zdes 
cereum in Colorado becomes Rides pumilum Nutt. and Rzdes 
wnebrians Lind]. ‘The larger part of them however, are new 
species resulting from a re-study of herbarium material especi- 
ally of the notable collections of the past few years. In the 
preface to the Flora, Professor Carpenter makes mention of the 
work in collecting of Professors Cassiday, Crandall and Cowen, 
all of whom collected especially for the Agricultural College. 
But the notable collections which make quite a considerable 
part of the citations of localities where the species have been 
found, were made by Baker, Tracy and Earle in southwestern 
Colorado in 1898; by Mr. C. F. Baker in southern Colorado in 
1899; by Rydberg and Vreeland in southern Colorado in 1900, 
and by Mr. C. F. Baker in the “region of the Gunnison water- 
shed” in Igot. 
Some of the species, some of the chenopodiums, for exam- 
ple, are too common for collecting, and one looking over the 
Flora might think them rare in the State; and quite a number 
of rare plants, as Azbes viscosissimum, Oreobroma Nevadensts, 
Erocallis triphylla and Cymopterus Parryt have but a single 
record. Such instances show the debt of a flora to the collect- 
ots. Lewzsia redeviva is noted from a single locality, though I 
suppose it is not extremely rare. 
Notwithstanding the painstaking care to include all the 
species known to occur in the State, some have been overlooked, 
among which are Solidago speciosa Nutt., Lacinaria spicata 
