Blake — New and Noteworthy Compositae 25 
1898), 307 (anno 1906). Zacatecas: Kirkwood 100; Palmer 373 
(anno 1902). San Luis Porosit: Parry & Palmer 374. Guana- 
sguaTo: Duges 9 (anno 1904). Mexico, without locality, Schiede 
1527 (hb. Berol.); between San Pedro Tlalilpan and Huehuetoca, 
June 1831, Schiede 1522, 1523 (hb. Berol.). — At first sight seem- 
ingly very distinct, but too intimately connected with the typical 
form and var. turbinellus for specific separation. Wright 294 
(valley of the Rio Grande, 60-70 miles below El Paso), referred to 
A. gracilis as a “more glabrate and less setigerous variety ” by 
Gray (Pl. Wright. i. 98) shows a gradual passage to the form with 
nearly all leaves entire and not spinulose, and long small-leaved 
mostly one-headed flowering branches, exemplified by Mexican 
Boundary Survey under Emory 509a (hb. Berol.). The receptacle 
is often prominently chaffy-fimbriate. 
According to Gregg, the plant is known as “ Yerba de vibora ” 
by the Mexicans and used for stomach and uterine disorders. 
Palmer says that it is sold in the markets of Coahuila as a blood 
purifier under the name “ Yerba de la vivosa,” but the latter name 
is perhaps incorrectly transcribed. 
Eriocarpum australe Greene, Erythea ii. 108 (1894) (Sideranthus 
australis (Greene) Rydb. Bull. Torr. Club xxvii. 621 (1900)), is as 
to distributed specimens so named by Greene himself a mixture of 
var. scabrellus, var. turbinellus, and various intermediate speci- 
mens. Some other described species of this affinity may be refer- 
able to the form-series of A. spinulosus, but material for their 
exact determination has not been available. 
APLOPAPPUS sTOLONIFERUS DC. Prod. v. 349 (1836).— Inula 
stolonifera C. Gay ex DC.1.c.assyn. Aster stolonifer (DC.) Ktze. 
Rev. Gen. i. 318 (1891). Osbertia stolonifera (DC.) Greene, 
Erythea iii. 14 (1895). — Three varieties of this plant may be 
distinguished, as follows: 
Var. genuinus. — A. stoloniferus DC. 1. ¢. — Caulis bracteatus 
sed vix foliatus. 
Var. Heleniastrum (Greene), comb. nov. —Erigeron Helenias- 
trum Greene! Erythea i. 150 (1893). Osbertia Heleniastrum Greene, 
1. c. iii. 14 (1895). — Caulis foliis 3-9 plus minusve reductis dona- 
tus. —I am unable to follow Dr. Greene in referring this plant to 
Erigeron, still less in distinguishing it generically from both Eri- 
geron and Aplopappus. The golden rays would not in themselves 
