JONES. —A REVISION OF THE GENUS ZEXMENIA. 165 
Burnet County, Hill, no. 22; Tom Green County, Tweedy, no. 324; 
Corpus Christi County, Kool, no. 95 (type of Viguiera longipes, 
Coulter) ; Gillespie County, Jermy, no. 646; Upper Guadaloupe River, 
Lindheimer, no. 345. Tamauuipas: near Victoria, Berlandier, Nov. 
1830; Matamoras, Berlandier, no. 3010. Nuevo Leon: Monterey, 
Palmer, no. 631, Pringle, nos. 2264, 11,907. Coanuita: Saltillo, 
Parry, no. 24, Palmer, no. 328. San Luts Poros: Parry & Palmer, 
no. 449. Hrpareo: Tula, Pringle, no. 6568. Stare or Mexico: 
Santa Fé, Bourgeau, no. 594; Tacubaya, Schmitz, no, 1029, Schaffner, 
no. 49, Vera Cruz (?): near Tantoyuca, Ervendberg, no. 89. 
» Var. Ramosisstma, 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 Cafion, Pringle, no. 6283. Yucatan: Gaumer, 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. tonerpes, Benth. Fruticose or suffruticose, much-branched, 
erect: leaves broadly ovate, 2 to 15 em. long, 1 to 7 cm. wide, acuminate, 
serrate, at base somewhat attentuate, not lobed, above strigose, below 
hirsute-villous ; petioles 0.2 to 2 em. long: peduncles 1 to 6 cm. long, 
corymbosely arranged, densely hirsute ; heads about 1 cm. high ; invol- 
ucre 2-3-seriate, cylindrical or somewhat campsnulate, about 1 cm. 
broad ; bracts lanceolate, hirsute : ligules conspicuous : achenes brownish, 
strongly 2-winged : wings projecting upwards in ear-like lobes, not con- 
fiuent 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 Rroa: Guanacaste, Pittier, no. 2801 bis; near San Mateo, 
Biolley, no. 7016; near San José, Pittier, no. 3135 ; Rio Teliri, Pittier, 
no. 7194; between Mano and Tigre, Pittier, no. 4683 ; Nicoya, Tonduz, 
no. 13,616. _ 
41. Z. puytiosteeta, Klatt. Branches slender : leaves linear-lan- 
ceolate, 4 to 8 cm. long, 10 to 15 mm. wide, attenuate into a very short 
