PLATYSTEMON AND ITS ALLIES. 143 
Torreyi, Greene, Fl. Fr. 283 in part. Plant 2 to 6 inches 
high, the rosulate basal leaves with small round-ovate blade 
and long linear petiole, only faintly 1-nerved the cauline 
oblong and linear-oblong: torus with inconspicuous plane 
rim: corolla white, about 4 inch broad; petals obovate, the 
inner ones narrowly so: stamens 12, the 6 outer shorter, all 
with linear filaments which are narrower rather than 
broader under the short oval anthers. 
This, the second species of the genus from the ma of 
view of its history, has a very extended range up and down 
the foothills east of the great interior valley of California, 
from the base of Mt. Shasta southward. For the sake of the 
consistencies of the geography of the genus, one could wish 
that the species were absolutely restricted to that habitat ; 
but Mr. ©. F. Baker last year distributed, under n. 457, 
and with the name Platystemon Torreyi, from Crystal Springs 
Lake, in the coast hills of San Mateo Co., a plant which I 
can not find referable elsewhere than here; though from 
the habitat, it would be expected to be the next species, 
M. collina, of which, however, it has not the essential char- 
acters. But it will not be a quite solitary instance in which 
a species ordinarily limited to the Sierra foothills, has been 
found at some isolated station in the Coast Range also. 
Iam suspicious that the species as I here present it is 
something of an aggregate; that some of the specimens 
from the most southernly localities will some day be found 
to represent one or more distinct species, the characters of 
Which may disclose themselves to such as make careful 
study of the living plants in the field. 
4. M. cortıxa. M. Californica, Torr. Bot. Mex. Bound. 
31, also of Pac. R. Rep. iv. 64 as to Pl. Thurber, but not of 
Torr. and Frém. Platystigma Californicum, Wats. Index 
in part, and of Boland. Catal. wholly. Platystemon Torreyi, 
