JONES. — A REVISION OF THE GENUS ZEXMENIA. 165 



Burnet County, Hill, no. 22; Tom Green County, Tweedy, no. 324; 

 Corpus Christi County, Nealley, no. 95 (type of Viguiera longipes, 

 Coulter) ; Gillespie County, Jermy, no. 646 ; Upper Guadeloupe River, 

 Lindheimer, no. 345. Tamaulipas : near Victoria, Berlandier, Nov. 

 1830; Matamoras, Berlandier, no. 3010. Nuevo Leon: Monterey, 

 Palmer, no. 631, Pringle, nos. 2264, 11,907. Coahuila : Saltillo, 

 Parry, no. 24, Palmer, no. 328. San Luis Potosi : Parry Sf Palmer, 

 no. 449. Hidalgo: Tula, Pringle, no. 6568. State of Mexico: 

 Santa Fe, Bourgeau, no. 594; Tacubaya, Schmitz, no. 1029, Schaffner, 

 no. 45. Vera Cruz ( ?) : near Tantoyuca, Ervendberg, no. 89. 



Var. ramosissima, Greenman. Stems 2 to 3 m. high, much-branched : 

 peduncles rather slender, 1.5 to 6 cm. long. — Field Col. Mus. Bot. ser. 

 iii. 127 (1904) — Southern Mexico. Specimens examined, — Oaxaca : 

 Tomellin Canon, Pringle, no. 6283. Yucatan: Ganmer, no. 826. 

 " This variety in habit, more particularly on account of the much 

 branched character of the stem and the numerous heads, seems, at first 

 sight, specifically distinct from the typical Z. hispida, but a considerable 

 series of specimens indicates that it is only an extreme variation. Forms 

 connecting the species and the variety are shown by Pringle's no. 2264 

 and Palmer's no. 631 from Soledad." J. M. G. 



40. Z. longipes, Benth. Fruticose or suffruticose, much-branched, 

 erect: leaves broadly ovate, 2 to 15 cm. long, 1 to 7 cm. wide, acuminate, 

 serrate, at base somewhat attentuate, not lobed, above strigose, below 

 hirsute-villous ; petioles 0.2 to 2 cm. long : peduncles 1 to 6 cm. long, 

 corymbosely arranged, densely hirsute ; heads about 1 cm. high ; invol- 

 ucre 2-3-seriate, cylindrical or somewhat campanulate, about 1 cm. 

 broad ; bracts lanceolate, hirsute : ligules conspicuous : acheues brownish, 

 strongly 2-winged : wings projecting upwards in ear-like lobes, not con- 

 fluent with the awns but attached to the neck of the achene ; ray-achenes 

 glabrous or nearly so and usually with 3 short awns and whitish wings 

 not markedly streaked ; disk-achenes hirsute, 2-awned and with wings 

 streaked with brown. — Benth. in Oerst. Vidensk. Meddel. 1852, p. 95. 

 Aspilia costaricensis, Klatt, Bull. Soc. Bot. Belg. xxxiv. 286 (1896), 

 not xxxi. 201 (1892). — Central America. Specimens examined, — 

 Costa Rica : Guanacaste, Pittier, no. 2801 bis ; near San Mateo, 

 Biolley, no. 7016; near San Jose, Pittier, no. 3135 ; Rio Teliri, Pittier, 

 no. 7194; between Mano and Tigre, Pittier, no. 4683 ; Nicoya, Tonduz, 

 no. 13,616. 



41. Z. phyllosteoia, Klatt. Branches slender: leaves linear-lan- 

 ceolate, 4 to 8 cm. long, 10 to 15 mm. wide, attenuate into a very short 



