303 
Idaho: 1. Mulford, 1892 (A. dioica). 
Oregon: Wilkes Expedition (A. dioica). 
Arctic America: Dr. Richardson, 301 (Guaphalium dioicum). 
/ANTENNARIA MICROPHYLLA. 
Stem slender, strict, 2-3 dm. high; pubescence very fine; leaves 
of the stolons small, .5~-1 cm. long, spatulate; stem-leaves linear- 
oblong; heads small, 5-7 mm. high, in a rather open corymb; 
bracts of the pistillate heads tinged with greenish yellow, linear- 
oblong or lanceolate, mostly acute, those of the staminate head 
with oval-oblong white scarious margins. 
In the characters of the head and bracts, it is intermediate be- 
tween A. alpina and A. plantaginifolia. ‘Tne head is scarcely as 
large as that of the former, the stem is much more slender than 
in either and the leaves smaller than in any of the group. It has 
been variously labelled in collections as A. dioica, A. luzuloides, 
A. Carpatica, etc. The following specimens are in the Columbia 
herbarium: 
Montana: P. A. Rydberg, no. 2831, 1895, from Manhattan 
(type); J. H. Flodman, no. 864, 1896, from Bozeman, 
Yellowstone National Park: Frank Tweedy, no. 203,.1884; A. 
Brown, 1893. 
Wyoming : Fremont; A. Nelson, no. 762. 
Colorado: C. C. Parry, 1872; Letterman, no. 200, 1884. 
' Utah: S. Watson, no. 651, 1869. 
Saskatchewan: E,. Bourgeau, 1858. 
ANTENNARIA PEDICELLATA Greene, Pittonia, 3: 175. 1897. 
Specimens of what I take to be this species were collected by 
Mr. Flodman in the Little Belt Mountains, Mont., in 1896, no. 867. 
These have large stem leaves about 3 cm. long and I cm. 
: wide; the lower ones are cuneate, obtuse, the middle ones broadly 
oblong and the upper ones ovate-lanceolate and acute. 
ANTENNARIA DIoICcA (L.) Gaertn., Fruct. & Sem. 2: 410. 1791. 
Gnaphalium dioicum L. Sp. Pl. 856. 1753. 
In the American specimens seen the stem is seldom 1.5 dm. 
high, rather stout, with larger heads often over 1 dm. high, the | 
scarious portion in the staminate heads elliptic, in the pistillate ob- 
long and obtuse, or the innermost rarely acutish, and the leaves of 
