JONES. — A REVISION OF THE GENUS ZEXMENIA. 155 
awn shorter than the body; disk-achenes slightly narrower and longer, 
their 2 awns subequal, longer than the body and at maturity much 
exceeding the involucre; squamellae none or minute. —Sch. Bip. in 
Seemann, Bot. Voy. Herald, 305 (1852-57); Hemsl. Biol. Cent.-Am. 
Bot. ii. 172. Verbesina ceanothifolia, Willd. Sp. PI. iii. 2225 (1804) ; 
DC. Prodr. v. 613 (1836). Lipochaeta umbellata, DC. 1. c. 610 (1836). 
— Mexico. Specimens examined, — Vera Cruz: Orizaba, Botteri, nos. 
800 (in part), 477, and 487; Thomas, coll. in 1864, MoreLos: Cuer- 
navaca, Berlandier, no. 1065 (co-type, in herb. Gray) ; Pringle, no. 9163 ; 
Holway, no. 3530; Bourgeau, no. 1219, Oaxaca: Sierra de San 
Felipe, Pringle, no. 5783; Conzatti & Gonzdlez, no. 993; Baites, coll. 
in 1846. Jatisco: near Guadalajara, Pringle, nos. 2167 and 2301; 
near Colotlan, Rose, no. 2814. Terric: Palmer, presumably coll. 
f 1892. 
Var. conferta, Gray in herb. Leaves lanceolate to elliptical, 1 to 
2.5 em. wide, attenuate to subtruncate at the apex, finely appressed- 
pubescent on both sides, subsessile: peduncles few to numerous, generally 
very short; involucre about 3-seriate; bracts acute: ligules apparently 
lemon-yellow. — Lipochaeta umbellata, var. conferta, DC. Prodr. v. 610 
(1836). — Mexico: Specimens examined, — MORELOS: Cuernavaca, Ber- 
landier, no. 1053 (type, fragment in herb. Gray). Without exact locality, 
Gregg, no. 1070. Trric: Acaponeta, Lamb, no. 519. 
21. Z. miIcRocePHALA, Hemsl. Shrub with scabrous stems: leaves 
ovate-lanceolate, 4 to 10 em. long, minutely serrulate, obtuse, short- 
petioled, rugose and strigillose above, strigillose, whitish, and with veins 
prominent beneath: peduncles slender, fasciculate-corymbose, about 
15 mm. long; heads about 1 cm. high; involucre 4 to 6 mm. wide ; 
bracts subcordate, oblong or ovate, rounded at the apex: ray-flowers 
about 4; ligules oblong-elliptical; disk-flowers about 20; teeth of the 
corollas hirsute: achenes glabrous, with 2 or 3 wing-like margins 
upwardly adnate to the awns; squamellae none. — Biol. Cent.-Am. 
Bot. ii. 173 (1881). — Western Mexico. Specimens examined, — 
Teric: San Blas, Sinclair (a leaf and head from herb. Kew). 
== Achenes about 3 mm. long, those of the ray-flowers obovoid, rounded above 
and with one long awn and two short teeth, those of the disk-flowers somewhat 
cuneate, scarcely 1 mm. wide at the summit and with two slender unequal awns 
shorter than the body. 
22. Z. mpeicata, Sch. Bip. Suffruticose, canescent; stem glabrate : 
leaves 1 em. long, subcordate, ovate, acute, irregularly dentate, scabrous ; 
petioles about 2 cm. long: heads in the upper axils; involucre hemi- 
