37() PROCEEDINGS OF THE AMERICAN ACADEMY. 



Encclia 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. 



Encclia stn'cfa Seaton, Proc. Am. Acad, xxviii. 120 (1893), from Mt. 

 Orizaba and Esperanza, Mexico = Verbesina Seatoni Blake, n. nom. 

 (not V.strida (Hemsl.) Gray, I. c. 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. 1. c. 185 (1881) is a synonym of 

 SiMSiA subaristata Gray. 



Encclia suffnitcsccns R. E. Fries, Nova Act. Soc. Sci. Upsal. ser. 4. 

 i. no. 1. S3, pi. 6. fig. 1-3 (1905), from northern Argentina = Flou- 

 rensia sufErutescens (R. E. Fries) Blake, n. comb. Young achene 

 plumpish, with two upwardly pubescent awns; habit of Flonrcnsia, 

 the heads radiate but scarcely resinous. 



Encclia tenuis Fernald, Proc. Am. Acad, xxxiii. 94 (1897) is a Simsia. 



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. ample.vicaulis (Cav.) Pers., both reducible to S.focficla. — 

 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.f hetcrophxjlla which = 

 lostcphanc hctcrophylla (Cav.) Benth. 



Armania Bert, in DC. Prod. v. 576 (1836). 



Barrattia Gray & Engelm. Am. Journ. Sci. ser. 2. iii. 274 (Mar. 

 1847). 



