BLAKE. — SPECIES HERETOFORE REFERRED TO LEPTOSYNE, 337 



0. Hoffm. in Engler & Prantl, Nat. Pfl. iv. Ab. 5. 243 (1890) (excluding 

 Epilcpis, Corcocarjms, and Acoma). — Twelve species, ranging from 

 California to Guatemala, chiefly Mexican. 



Sect. 1. Electra (DC.) Blake, n. comb. Suffruticose, with oppo- 

 site oval to lanceolate coriaceous sometimes ternately parted leaves. 

 Heads solitary or paniculate-corymbose, radiate. Outer involucral 

 scales about 5, oblong; inner about 8, longer, oval-oblong. Rays 

 about 5, 2-3-dentate, oblong to elliptic, fertile, the tulje pubes- 

 cent; disk-flowers with pubescent tube shorter than the cylindric- 

 funnelform throat, and (4-)5-toothed limb; annulus none. Style- 

 branches with subulate hispid appendages. Achenes strongly ob- 

 compressed, glabrous, margined, the outer broad, the inner much 

 narrower, all pappusless or the inner rarely with a pair of smooth slen- 

 der awns.— Electra DC. Prod. v. 630 (1836); Gray, PI. Wright, i. 

 110, footnote (1852). — Three species of Mexico and Central America. 



* Heads numerous in ternate corymbose panicles. 



1. C. MEXiCANA (DC.) Hemsl. Shrubby, nearly glabrous, 0.6- 

 2 m. high; leaves lanceolate to lance-ovate, acute to acuminate at 

 both ends, sharply serrate, often trifoliately cut nearly to the midrib, 

 glabrate on both sides or retaining a sparse pubescence chiefly along 

 the veins, the blades 4-11 cm. long, on narrowly margined petioles 

 1-2.5 cm. long; heads 1-1.3 cm. high, 2.5-4 cm. in diameter including 

 rays; achenes 6-9 mm. long. — Biol. Centr.-Am. Bot. ii. 196 (1881). 

 Electra mcxicana DC. 1. c. Electra Galcottii Gray, 1. c. Coreopsis 

 Galeottii Hemsl. 1. c. 195. — In an authentic example of E. mcxicana 

 in the Gray Herbarium, collected by Mendez, the tube of the ray is 

 distinctly hirtellous, and the narrowly lanceolate leaves still show a 

 slight appressed pubescence beneath, while one of the younger heads 

 is also sparingly hairy at the base, so that the characters relied upon 

 by Dr. Gray in separating E. Galeottii entirely fail to hold. Galeotti 

 2086, represented by a fragment in the Gray Herbarium, as well as the 

 Baites specimens cited in the original description, is practically gla- 

 brous, while Galeotti 2087 somewhat approaches the next form. 



Guanajuato: "circa Villalpando ultra Guanaxuato," Mendez 

 (coTYPE in Gray Herb.); Guanajuato, 1895, Duges 472; near Cader- 

 eyta, 22 Aug. 1905, Rose 9717; Hidalgo: sunny rocky slopes, Pa- 

 chuca, Sept. 1905, Pur pus 1550; clay banks, Dublan, alt. 2070 m., 

 15 Oct. 1902, Princjle 9895; Sierra de Pachuca, 2900 m., 14 Sept. 

 1899, Pringle 8218; near Metepic Station, 2530 m., 20 Sept. 1904, 

 Pringle 13041; Mexico: barranca above Santa Fe, 2600 m., 1 Sept. 



