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 Samsia 
lagascaeformis, 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 EF. pilosa Greenm., 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. 
Stmsia lagascaeformis DC. Prod. v. 577 (1836). 
ha (Simsia) purpurea Rose, Contr. U.S. Nat. Herb. i. 336 
Encelia pilosa Greenm. Proc. Am. Acad. xxxix. 111 (1903). 
pecimens examined: San Luis Porost: alt. 1830-2440 m., 1878, 
Parry & Palmer 472 part (G); Coma: in a creek bottom, Colima, 
9 Jan.—6 Feb. 1891, Palmer 1105 (GN, type collection of E. purpurea); 
PvuEBLA: maize fields, Rio de San Francisco, Aug. 1909, Purpus 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. 2000-2500 m., 12 Nov. 1894, Nelson 
1937 (GN); valley of Etla, alt. 1700 m., 23 Oct. 1895, L. C. Smith 854 
(G); Ocotlan, Dec. 1901, Conzatti & Gonzdlez 1263 (G); without 
definite locality, alt. 1750 m., July—Aug. 1900, Conzatti & Gonzédlez 
1002 (G); 25 Oct. 1899, Holway 3740 (G); 17 Oct., 1899, Holway 
3747 (G). 
x x Pales and scales not purple-tipped, or else | lensely canescent-tomen- 
beneath; plants of Yucatan, Columbia, and Ecuador. 
© Leaves canescent-tomentose beneath; scales pilose. 
8. S. Sodiroi (Hieron.) Blake, n. comb. Said to be suffrutescent 
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 
