OBSERVATIONS ON THE COMPOSITiE. 73 



Another small genus of underslirabs which, in my opinion, 

 should not have been suppressed, is Nuttall's Maceonema, 

 These are not evergreen. Their foliage is thinnish and 

 entire. The involucre is double; a character which almost 

 reappears in some species of Chrysopsis where there are 

 foliaceous bracts subtending the real involucre. The 

 achenes in Macronema are elongated and compressed, and 

 either somewhat hairy or glabrous. Tlie genus took its 

 name from the conspicuously slender and elongated style- 

 tips. I recognize the following species. 



* Heads few or solitary, rather large. 



-H- Ray 'flowers present, 



1. M, SUFFRUTicosuM, Nutt., Trans. Am. Phil. Soc. vii, 

 322 (1840), AplopappiLS stiff ridicosics^ Gray, Proc. Am. 

 Acad, vi, 542 (1865). Aster suffruficosus, O. Ktze, Eev. 

 Gen. 315 (1891). — High elevations of the northern and mid- 

 dle Sierra Nevada; also in Oregon, Washington and Nevada. 



2. M. molle. Aplopappus mollis^ Gray, Proc. Am. 

 Acad, xvi, 80 (1880). — High mountains of eastern Oregon 

 and Washington; the geographic center of distribution for 

 this genus. 



3. Iff. Greenei. Aplopappus Greeiiei^ Gray, 1. c. (1880). 



Aster Greenei^ O. Ktze. 1. c. 318. — Habitat of the last, but 

 ranging much farther southward, reaching the middle of 

 California in the higher Sierra. 



4. M. pygmaDum. Stenotus pygmcBus^ Torr. & Gray, FL 

 ii, 237 (1842). Aplopappus pygmcBUS^ Gray, Am. Journ. 

 Sci. 2 Ser. xxxiii, 239 (1862). Aster Sfenotus, O, Ktze. 1. c. 

 317. Erroneously associated with the Stenoti at the first by 

 Dr. Gray, he continued so to regard this to the last. But it 

 has none of the special features of that group. It is, how- 

 ever, somewhat nearer to Solidago Parryi, though destitute 

 of the underground shoots by which that species, like other 

 Golden Kods, spreads. But it is less herbaceous than any of 

 that geuus. The persistent parts of the stem, though almost 



