14 ERYTHEA. 
OSBERTIA.’ 
1. 0. stolonifera. Aplopappus? stoloniferus, DC. 
Prodr. y. 349 (1836). Aster stolonifer, O. Ktze. Rev. Gen. 
318 (1891). Slender herb, with long monocephalous scape, 
and equally long and slender leafy prostrate stolons: the 
whole plant hirsute, the leaves and involucres more particu- 
larly so, and almost hispid: radical leaves narrowed to a 
short and broad winged petiole. 
_ ©. Heleniastrum. Zrigeron Heleniastrum, Greene, 
Eryth. i. 150 (1893). Plant stouter, not as tall, less stolon- 
iferous, without hirsute pubescence, the involucre excepted: 
leaves ampler, thinner, tapering to a long and wingless petiole. 
Var. glabrata. Aplopappus stoloniferous. var. glabre- 
tus, Coult. Bot. Gaz. xvi. 98. Stout, low, scarcely st>louifer- 
ous, almost glabrous; leaves of firmer texture. 
Var.? scabrella. Of firm texture, scabrous and hirsutu- 
lous, dwarf and without stolons: bracts of the involucre 
broader, almost subulate, only hirsutulous: stout scapes 
barely 2 inches high. This is n. 3697 of J. Donnell Smiths’ 
distribution of Guatemalan plants; probably a distinct 
species. 
In a former article I concluded my observations on Hrio- 
carpum by stating that certain species, presumably of that 
enus, were at that time too little known by me. I, may 
therefore introduce them here. 
E. blephariphyllum. Aplopappus blepheriphyllus, 
Gray, Pl. Wright. i. 97 (1852). Having now seen specimens 
enough of Charles Wright’s plant on which this species was 
founded, I am unable to comprehend what reason could be 
seen for combining it with Aster gymnocephalus. In aspect 
the two are most unlike each other; and the present plant 
has more the foliage, the habit and the inflorescence of 
Grindelia inuloides. I can not doubt that it is a most dis- 
tinct species. 
1 In commemoration of the high services rendered to Mexican botany 
by Mr. Osperr Satvrn. 
