80 PITTONIA. 
from near Colby, Butte Co., Calif., in 1896, and Mr. Sonne, 
from Mt. Stanford, 1890. It is in my herbarium also from 
Lassen’s Peak, Chesnut and Drew, 1891, and also from my 
own collecting in the Scott Mountains, west of Mt. Shasta, 
Aug., 1876, these specimens being peculiar as showing a very 
evenly and regularly repand-dentate leaf-margin. 
C.ROTUNDIFOLIA. C.leptosepala, var. rotundifolia, E. Huth, 
l.c. Like the last in habit and inflorescence, but herbage of 
much firmer texture, the leaves always longer than broad, 
commonly round-obovate, sometimes more elongated, the 
small basal lobes commonly overlapping and closing the 
sinus, the margin from subentire to rather unevenly dentate : 
scapes mostly about 3, in fruit sometimes more than a foot 
high, always stout: sepals large, oblong-obovate, thickish, 
bluish without: filaments flattened and rather broadly 
linear, only twice the length of the short anthers. 
A most widely dispersed and variable alpine species, com- 
mon from Colorado to Montana, westward to Idaho and the 
subalpine moist plains of northeastern California; prob- 
ably alsoin Utah and Nevada. The specific name is in- 
appropriate; most Calthas being more nearly round-leaved 
than this. The entire-leaved form on which Huth estab- 
lished his variety is somewhat rare and exceptional. 
C. cHIONOPHILA. Acaulescent, with stoutish peduncles 
and scapes, and leaves thick and firm in texture, their out- 
line from oval-subsagittate to obovate-subreniform, or even 
somewhat panduriform by an evident constriction below 
the middle, the whole margin usually eoarsely and sharply 
dentate: earliest scapes either not equalling the leaves or 
little exceeding them: sepals 10 or fewer, oblong to obovate, 
large, the flower often 13 inches in diameter: stamens very 
short, the filaments not longer than the anthers and widely 
dilated, of oblong outline, and even the connective subulate- 
dilated: mature carpels not known. 
