BLAKE. — ENCELIA AND RELATED GENERA. 381 



intermixed with long hairs; leaves mostly opposite, ovate, acute, 

 cuneate-truncate to cordate at base, subentire, crenate, or sometimes 

 rather sharply toothed, tuberculate-strigillose with some longer hairs 

 intermixed, the blade 5-11 cm. long, 2.5-8.5 cm. wide, on nearly 

 naked petioles 1-7 cm. long, glandular-puberulent and fringed with 

 long white hairs; heads numerous, paniculate, the bracts linear-lanceo- 

 late or broader; disk 1-1.3 cm. high, about as broad; involucre 

 nearly or quite equaling the disk, about 3-seried, the inner scales lance- 

 acuminate, the outer ovate or ovate-oblong and half their length, all 

 striate, glandular on the back, ciliate particularly toward the tip, 

 purple-tipped, the inner mostly purple; rays about 8, oval-oblong, 

 under 8 mm. long, subentire, yellow, apparently sometimes wanting; 

 disk-corollas 7 mm. long, glandular-puberulent particularly on tube 

 and teeth, yellow turning purplish with age; pales 9-10 mm. long, 

 narrow, glandular-puberulent and ciliate on the back and tip; achene 

 blackish, glabrous and awnless, nearly truncate at apex, 4.5 mm. long, 

 2.3-2.8 mm. broad. 



Simsia exaristata Gray, PI. Wright, ii. 87 (1853). 

 Encelia exaristata Gray in Hemsl. Biol. Centr.-Am. Bot. ii. 183 

 (1881). 



Specimens examined: Texas: valleys in the mountains east of El 

 Paso, 1849, Wright 331 (GN); Arizona: Mexican Boundary Line, 

 south of Bisbee, 14 Sept. 1892, Mearris 873 (N); southern part, 1881, 

 Lcmmon 575 (G); New Mexico: southern part, Mex. Bound. Surv. 

 under Emory, 561 (N). Sonora: valley of a tributary of the San 

 Pedro, Sept. 1851, Wright 1224 (GN, type collection); sandy 

 places, Sept. 1851, Thurher 9o3 (G); Chihuahua: valley near Chi- 

 huahua, 19 Sept. 1885, Pringle 321 (FGN); Vera Cruz: Orizaba, 

 Bottcri 804 (G). 



5. S. submollicoma Blake, n. sp., herbacea caule ramisque striatis 

 puberulo-pilosis ad nodes canescentibus; fohis fere omnibus oppositis 

 ovato-deltoideis cordatis sinu lato breveque vel superioribus truncatis 

 crenato-dentatis paullulo hastato-lobatis acutis infra dense submol- 

 literque pubescentibus pilis brevibus patentibus in venis longioribus 

 supra subcanescentibus pube subsimile autem appressa asperaque 

 4-6 cm. longis 3-5.5 cm. latis, petiolis immarginatis puberulo-pilosis 

 1-3 cm. longis; capitulis subcorymbosis ramos terminantibus juven- 

 tate ut gemmis dense pilosis maturitate 10-14 mm. alto 9-11 mm. 

 diametro; involucro 1 cm. altitudine squamis acutis purpurascentibus 

 triseriatis puberulis subdense pilosisque interioribus oblongis exteriori- 

 bus ovatis duplo brevioribus: radiis (an semper) 0; coroUis disci 



