A REVI^IOX OF CERTAIN A XTENNARIJ^— NELSON. 709 



and from two to three weeks later than A. refiexa and A. arida. 

 Nearly all forms of this species are more or less o-landular and green 

 about the inflorescence and often ciliate as well. The nonglandular 

 forms are less common and quite diflerent in appearance, their involu- 

 cres much like those of A. foliacea. A narrow-leaved form has been 

 collected ])V Rvdberg- and Vreeland, no. o-toO. in southern Colorado. 



Dr. Rvdberg- claims that A. pari') fo] 'hi Nuttall is ^1. rosea (Eaton) 

 Greene, but Nuttall's description does not apply to that plant. The 

 leaves of .1. roxea are not ' ' whitely tomentose/' l)ut ' ' canescently tomen- 

 tose"" and dull as to color. ''Radical leaves, somewhat rhomboidaJ'y 

 spatulate." exactly describes the plant which Dr. Rydberg named 

 ^1. ink-roplnjUa. The stolons of ^1. ^ro^ca are hardly "procumbent,'" 

 but ascending or assurgent. It is also very improl)able that Nuttall 

 had staminate plants of A. rosea, since those are extremeh" rare. I 

 doubt very much whether Nuttall would have described A. rosea 

 (Eaton) (Ireene as having '"' whitely tomentose'' and " somewhat rhom- 

 boidally s[)atulate leaves'' and "-procumbent sarments." If the Nut- 

 tallian specimen seen l>y Dr. Rydberg is .1. rosea (Eaton) Oreene, then 

 we are led to believe that it is not what Nuttall had before him when 

 drawing u]) his description. The characterization which Nuttall gives 

 is of the male plant, and, apparently, he had dwarf specimens. 



23. Antennaria nitida Greene, Pittonia 3: 283. 189S. 



Stems (i-T cm. high; leaves spatulate, obtusish, 7-10 mm. long, 2.5 

 mm. wide, covered with a white, glistening indument; lower portion of 

 involucral bracts and the foliar bracts of the inflorescence beset with 

 short glandular bail's; involucres ('> nun. high, the tips of the bracts 

 (staminate) yellowish white, ol)long to oval, obtuse, entire or bluntlv 

 few-toothed at summit. Female plant unknown. 



Tyi^' locality. — "Charlton Island, James Bay," Collected by J. M. 

 INIacoun; type in the herl)arium of the Geological Survey of Canada 

 (sheet no. il272). 



A northern relative of A. i>arv!foll((, characterized by its obtusish 

 leaves and viscid indument. 



24. Antennaria arida E. Nelson, Rot. Gaz. 27: 210. 1899. 



Seven to 15 cm. high; leaves small (S-12 mm. long) and inclined 

 to l>e conduplicate, spatulate, acute, hoary-tomentose; involucres 

 about »i mm. high, the bracts (pistillate) nearly all equal, obtuse, or 

 somewhat imbricated and acutish, the tips dull white, very rarely 

 pinkish. Male plant unknown. 



Tiipe locality. — ''Ti])t<»n" in ''the arid region of southwestern Wyo- 

 ming." Collected by Aven Nelson, no. 479.S; type in the Rocky Moun- 

 tain Herbarium, University of Wyoming, Laramie. 



Wyoming. Utah, and Colorado. 



Distinctly an arid species, being the low, hoar}', whitish-bracted 

 plant so couunon on plains and gentle slopes in southern Wvoming. 

 It flowers nearly as early as A. aprica and at least three week's earlier 

 than A. ixmy folia of the meadows. It l)ears some resemblance to A. 

 refiexa, hut is readily distinguished ])y its somewhat larger heads with 

 white-tipped bracts, and by its leaves, which are acut(\ standing more 

 or less erect, and inclined to be coiidui)licate. The leaves of A. re/lexa, 



