394 PROCEEDINGS OF THE AMERICAN ACADEMY. 
latis; corollis disci 6.5—7.5 mm. (tubulo 1 mm.) longis flavis denique 
apice purpurascentibus glandulosis praecipue in tubulo; acheniis 
maculosis appresse pubescentibus pilis ferrugineis 5-6 mm. longis 
2.8-3 mm. latis; aristis 2, 4 mm. longis. 
Specimens examined: Pursua: rocky soil, Cerro de Paxtle, Sept. 
1908, Purpus 3022 (FGN, coryrrs). Distributed as Encelia hetero- 
phylla (= S. foetida), from which it differs in size of achene, leaf-base, 
and whole character. ! 
+ + Rays purple. 
22. S. SANGUINEA Gray. Stems several, erect from a woody root, 
1 m. high or more, branched above, usually purplish, glandular-setose; 
lower leaves opposite, variable, hastately 3-lobed, with broadly mar- 
gined cordate-clasping petiolar bases, crenate-dentate or sometimes 
cut-lobed, scabrous and glandular-setose both sides, 3-18.5 em. long 
including petiole, about as wide across the lobes, the upper reduced 
to linear-lanceolate bracts; heads numerous, panicled, on peduncles 
1-11 cm. long; disk 1-1.5 em. high, mostly slightly surpassing the 
involucre; this 3-seried, the scales linear-subulate to lanceolate, 
striate, densely glandular, setose, the outer’ distinctly shorter; rays 
about 10, rich purple, oblong-oval, 6-10 mm. long; disk-corollas 
5-8 mm. long, purple above, glandular-pubescent below, hairy on the 
teeth; pales 8.5-13 mm. long, narrow, glandular-pubescent toward the 
acute tip; achenes blackish, oval, barely obcordate, 4.5—6.5 mm. long, 
2.5-3.5 mm. wide, more or less densely appressed-pubescent, bearing 
2 teeth or 1 short smooth awn or 2 upwardly pubescent awns as much 
as 3 mm. long. 
Simsia sanguinea Gray, Pl. Wright. i. 107 (1852). 
Encelia sanguinea Hemsl. Biol. Centr.-Am. Bot. ii. 185 (1881). 
Simsia erythranthema Sch. Bip. in Gray, Proc. Am. Acad. x1x. 9 
(1883), as syn. s 
Specimens examined: Jaxisco: dry grassy slopes of the barranca 
near Guadalajara, 5 Nov. 1888, Pringle 1738 part (F: intermediate 
between this and the next); Vera Cruz: hillsides, Chavarillo, 7 Sept. 
1906, Barnes, Chamberlain, & Land 6 (F); Mirador, Consoquitla, 
Aug. 1841, Liebmann 492 (G); Mirador, without date, Sartorius (G); 
Oaxaca: hills, Las Sedas, alt. 1830 m., 11 Aug. 1894, P ringle 5756 
(G); El Parian, Etla, alt. 1200 m., Nov. 1898, Conzatti & Gonadles 
899 (G); Santa Catarina, alt. 1000 m., 26 Dec. 1906, Conzatti 1652 
(F); La Carbonera, alt. 2135 m., 20 Sept. 1895, L. C. Smith 817 (G); 
Monte Alban, alt. 1800 m., 18 Aug. 1897, Conzatti & Gonadlez 403 (G); 
