BLAKE.— ENCELIA AND RELATED GENERA. 393 
Specimen examined: CuHrapas: mountain forests, 1864-70, Ghies- 
breght 568 (TyPE in Gray Herb.). 
o o Achenes appressed-pubescent, biaristate; branches puberulent. 
20. S. sericea (Hemsl.) Blake, n. comb. Herbaceous?, erect, the 
stem and nearly opposite branches slender, terete, striate, densely 
glandular-puberulent; leaves mostly opposite, lance-ovate, acuminate, 
truncate or slightly rounded at base, remotely and obscurely serrulate, 
densely glandular-strigillose above, softly silvery-silky beneath, 4-9 
em. long, 1.5-3.5 em. broad, on densely glandular short-pilose 
petioles about 1 cm. long; heads rather few, corymbed toward tips 
of branches, on peduncles 2-5.5 em. long; disk 1 cm. high, about 
as broad, exceeding the involucre; the latter triseriate, the scales 
graduated, the inner lance-attenuate, the outer ovate-lanceolate, 
glandular-puberulent and hispid-ciliate; rays “about 7,” 1 em. long; 
disk-corollas 6.5 mm. long, puberulent, yellow; pales 8 mm. long, 
stiff, scarious, acuminate, glandular-pubescent on keel and tip, later- 
ally lacerate-dentate; achene 3.2 mm. long, 1 mm. wide, densely ap- 
pressed-pubescent, the awns ampliate and lacerate toward the base, 
1.5 mm. long. 
Encelia (? Simsia) sericea Hemsl. Biol. Centr.-Am. ii. 185 (1881). 
Specimens examined: GuaTEMALA: Antigua, dept. Sacatapéquez, 
13 Feb. 1905, Kellerman 4982 (GN) (distr. as Viguiera helianthoides 
HBK.). Hemsley’s type (Salvin & Godman 133, in Kew Herb.) came 
from the Motagua Valley in Guatemala. 
= = Leaves three-lobed, sessile, the upper reduced to lance-linear bracts; 
orescence few-headed, the peduncles very long. 
21. S. triloba Blake, n. sp., verisimiliter herbacea; caule ad 1 m. 
alto tenui supra pauciramoso, ramis longissimis 1—3-capitulatis, 
utrisque purpureis substriatis glandulari-pubescentibus et praecipue 
in inflorescentia sparse pilosis; foliis inferioribus oppositis ovatis 1 em. 
supra basin trilobatis, lobo medio 2.5-4 em. longo alteris 1 em. sive 
minoribus, omnibus oblongis subdentatis vel integris, sessilibus basi 
subamplexicaule 1 cm. longo latitudine medium lobum aequante, 
glandulari-scabris et praecipue supra hirsutis pilis basi tuberculatis; 
foliis superioribus oblongo-lanceolatis amplexicaulibus sensim ad 
bracteas ovatas vel lineares reductis; capitulis paucis longe peduncu- 
latis pedunculis nudis vel pluribracteatis; disco 12-13 mm. alto 13- 
15 mm. diametro quam involucro paullo longiore; squamis circa tri- 
‘eTiatis striatis glandulari-pubescentibus subhirsutis linear-subulatis 
exterioribus brevioribus; radiis ca. 10 flavis ovalibus 7.5 mm. longis 
