376 PROCEEDINGS OF THE AMERICAN ACADEMY. 
Encelia squarrosa Greenm. Proc. Am. Acad. xxxix. 112 (1903), 
from Guerrero = VIGUIERA squarrosa (Greenm.) Blake, n. comb. 
Achene and pappus quite of this genus. A very distinct species. 
Encelia stricta Seaton, Proc. Am. Acad. xxviii. 120 (1893), from Mt. 
Orizaba and Esperanza, Mexico = VERBESINA Seatoni Blake, n. nom. 
(not V. stricta (Hemsl.) Gray, 1. ec. xix. 13 (1883)). Closely related to 
V. hypomalaca Rob. & Greenm. and to V. stricta (Hemsl.) Gray; dis- 
tinguished from the latter by the not scabrous under leaf-surface, 
and from the former by the shorter broader crenate-dentate leaves 
not cordate-clasping at the base 
Encelia subaristata Gray in Hemsl. |. ec. 185 (1881) is a synonym of 
SIMSIA SUBARISTATA Gray. 
Encelia suffrutescens R. E. Fries, Nova Act. Soc. Sci. Upsal. ser. 4. 
i. no. 1. 83. pl. 6. fig. 1-3 (1905), from northern Argentina = FLOU- 
RENSIA suffrutescens (R. E. Fries) Blake, n. comb. Young achene 
plumpish, with two upwardly pubescent awns; habit of Flouwrensia, 
the heads radiate but scarcely resinous. 
Encelia tenuis Fernald, Proc. Am. Acad. xxxiii. 94 (1897) is a Simsza. 
SIMSIA Pers. (dedicated to Jacob Sims, editor of Curtis’ Botanical 
Magazine from 1784 to 1816).— Heads small or medium, radiate or 
discoid, the flowers yellow or purple. Involucral scales in 3 or 4 rows, 
subequal or distinctly seriate, lance-ovate to lance-linear. Receptacle 
slightly convex; pales scarious, stiff, acuminate, conduplicate about 
the achenes, persisting after the fall of the latter. Rays slightly 
bidentate, yellow or rarely purple, sometimes wanting; disk-corollas 
with short usually pubescent tube and cylindric throat, 5-toothed, 
yellow or purple, sometimes changing color with age. Style branches 
attenuate, hispid-villous. Disk-achenes strongly compressed, very 
flat, obovate or oblong, glabrous or more often appressed-pubescent, 
never villous, with thin unmargined edges, calvous or usually biaris- 
tate.— Annuals or sometimes perennials, with at least the lower leaves. 
opposite, and usually paniculate heads. Type species S. ficifolia 
Pers. and S. amplexicaulis (Cav.) Pers., both reducible to S. foetida.— 
About 22 species of western America, from the arid southwestern 
part of the United States to Argentina; one species in Jamaica. 
Simsia Pers. Syn. ii. 478 (1807), excl. S.? heterophylla which = 
Tostephane ee ee (Cav.) Benth. 
Armania Bert. in DC. Prod. v. 576 (1836). 
Barrattia Cia & Engelm. Am. Journ. Sci. ser. 2. iii. 274 (Mar. 
1847). 
