303 



Idaho: I. Mulford, 1892 (^. dioica). 



Oregon: Wilkes Expedition {A. dioica). 



Arctic America : Dr. Richardson, 301 {GnapJialiuin dioicumy 



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. The 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. hizidoides, 

 A. Cai'patica, 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. 



Yellozvstone 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. 



Saskatcheivan : 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 dioica (L.) Gaertn., Fruct. & Sem. 2: 410. 1791. 



Gnaplialinm dioicnni L. Sp. PI. 856. 1753. 



In the American specimens seen the stem is seldom 1.5 dm. 

 high, rather stout, with larger heads often over i 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 



