BLAKE. — ENCELIA AND RELATED GENERA. 393 



Specimen examined: Chiapas: mountain forests, 1SG4-70, Gkies- 

 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; lea\'es mostly opposite, lance-o^•ate, acuminate, 

 truncate or slightly rounded at base, remotely and obscurely serrulate, 

 densely glandular-strigillose above, softly silvery-silky beneath, 4-9 

 cm. long, 1.5-3.5 cm. broad, on densely glandular short-pilose 

 petioles about 1 cm. long; heads rather few, corymbed toward tips 

 of branches, on peduncles 2-5.5 cm. long; disk 1 cm. high, about 

 as broad, exceeding the in\'olucre; the latter triseriate, the scales 

 graduated, the inner lance-attenuate, the outer ovate-lanceolate, 

 glandular-puberulent and hispid-ciliate; rays "about 7," 1 cm. 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. 



Encclia {f Simsia) sericea Hemsl. Biol. Centr.-Am. ii. 185 (1881). 



Specimens examined: Guatemala: Antigua, dept. Sacatapequez, 

 13 Feb. 1905, Kellermayi 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; 

 inflorescence 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 cm. 

 supra basin trilobatis, lobo medio 2.5-4 cm. longo alteris 1 cm. 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 pauUo longiore; squamis circa tri- 

 seriatis striatis glandulari-pubescentibus subhirsutis Hnear-subulatis 

 exterioribus brevioribus; radiis ca. 10 flaAis ovalibus 7.5 mm. longis 



