74 ERYTHEA. 



+ 



subterranean, are woody, and this feature, along with the foli- 

 aceous outer bracts of the involucre, and the long style-tips, 

 confirm it as a Macronema. — Rocky Mountains of Colo. 



-f- -I- Bay-flowers wanting. 



5. M. DiscoiDEUM, Nutt. Trans, Am. Phil. Soc. vii, 322 

 (1840). Aplopappus Macronema, Gray, Proc. Am. Acad- 

 vi, 542 (1865). Asier macronema^ O. Ktze. 1. c. 318. — Of 

 more extended range than any other species, reaching 

 Wyoming and Colorado, and the mountains of eastern Cali- 

 fornia to the middle of the State. 



* * Heads many, few-flowered^ fasUgiate'Chisiered. 



6. M, Watsonii, Aplopappus Watsonn^ Gray, Proc. 

 Am- Acad, xvi, 79 (1880). Asier Serenoi, O. Ktze. 1. c. 316. 



This plant is so good a Macronema in fades, as well as 

 character, that Prof. Eaton mistook it for a mere form of the 

 typical species of the genus (Bot. King. Exp, 159) with 

 heads in a "terminal corymb." — Apparently restricted to the 

 mountains of Nevada and Utah, 



There is another genus of plants to which I consider 

 Macronema to be more closely allied than to Stenotus^ and 

 that is Chrysopsis; and if Macronema be not retained as a 

 genus, it is into this, and not Hoorehekia {Aplopappus) 

 that the species should go. The involucres in Chrysopsis 

 are of narrower, less foliaceous and far more numerous 

 bracts than in Macronema; the plants are all herbaceous 

 and have an ampler and otherwise different inflorescence; 

 moreover, in the typical species the pappus is double; 

 though if this last character is to be made much of in this 

 tribe it will divide and subdivide both Aster and Erigeron. 



The typical species of Chrysopsis had been referred by 

 Linnaeus to the Old World genus Inula; and Eafinesque 

 was the first to remark in the American plants a noteworthy 

 divergence from the proper type of that genus. In 1818 he 

 therefore indicated them as forming a genus, essaying to 

 give as a name Dlplogon, which was not available, having 



