BLAKE. — ENCELIA AND RELATED GENERA. 383 



wide; involucre nearly equaling the disk, its scales 3-ranked, striate, 

 purple-tipped, glandular-puberulent, ciliate, the outer ovate, the inner 

 oblong-lanceolate, all acute; rays 5-8, small, oval to oval-oblong, 5 

 mm. long, yellow; disk-corollas 5.5-6 mm. long, glandular-puberulent, 

 yellow becoming purplish; pales truncate or retuse and mucronate, 

 ciliate on back and tip, glandular, purplish above, striate, 6-8 mm. 

 long; achene appressed-pubescent, mottled with brownish-gray and 

 black, bearing 2 slender upwardly pubescent fimbriate-based awns, 

 5 mm. long, 2.5 mm. wide. — A photograph of the type of Simsia 

 lagascaefonnis, kindly sent me by M. C. de Candolle, who also writes 

 that the achenes are hairy and biaristate (not glabrous as originally 

 described), proves that this long-misunderstood species is identical 

 with E. jyilosa Greenni., which in all technical characters is the same 

 as E. 'purpurea Rose. The latter species, known only from two plants 

 collected by Palmer in 1891, and represented by sections in the Gray 

 and National herbaria, seems to be merely a peculiarly branched and 

 perhaps somewhat teratological condition, with very numerous capi- 

 tula and somewhat flattened branches. 



Simsia lagascaeformis DC. Prod. v. 577 (1836). 



Encelia (Simsia) purpurea Rose, Contr. U. S. Nat. Herlj. i. 336 

 (1895). 



Encelia pilosa Greenm. Proc. Am. Acad, xxxix. Ill (1903). 



Specimens examined: San Luis Potosi: alt. 1830-2440 m., 1878, 

 Parry & Palmer 472 part (G); Colima: in a creek bottom, Colima, 

 9 Jan.-6 Feb. 1891, Palmer 1105 (GN, type collection of E. purpurea); 

 Puebla: maize fields, Rio de San Francisco, Aug. 1909, Pur pus 3826 

 (FGN); Tehuacan, 7 Nov. 1903, Holway 5340 (G); Oaxaca: Las 

 Sedas, alt. 1830 m., Sept. 1894, C. L. Smith 277 (N); between Coixtla- 

 huaca and Tamazulapam, alt. 2000-250^) m., 12 Nov. 1894, Nelso7i 

 1937 (GN); valley of Etla, alt. 1700 m., 23 Oct. 1895, L. C. Smith 854 

 (G); Ocotlan, Dec. 1901, Conzatti & Gonzalez 1263 (G); without 

 definite locality, alt. 1750 m., July-Aug. 1900, Conzatti & Gonzalez 

 1002 (G); 25 Oct. 1899, Holway 3740 (G); 17 Oct., 1899, Holway 

 3747 (G). 



X X Pales and scales not purple-tipped, or else leaves densely canescent-tomen- 



tose beneath; plants of Yucatan, Columbia, and Ecuador. 



o Leaves canescent-tomentose beneath; scales pilose. 



8. S. Sodiroi (Hieron.) Blake, n. comb. Said to be sufi^rutescent 

 and 2 m. high; stem and branches striate, short-pubescent and some- 

 what glandular; leaves all but the uppermost opposite, ovate-lanceo- 

 late, acute, truncate or subcordate at base, roughish with appressed 



