164 PROCEEDINGS OF THE AMERICAN ACADEMY. 
flexed: ray-flowers about 12; ligules small, narrow; disk-flowers much 
exceeding the involucre: achenes winged, pubescent, constricted at the 
summit; awns about as long as the body ; squamellae small, numerous, 
— Bull. Soc. Bot. Belg. xxxi. 203 (1892). — Z. dulcis, Coulter in J. D. 
Smith, Enum. Pl. Guat. iv. 86 (1895), not Bot. Gaz. xvi. 99 (1891). 
— Central America, Specimens examined, — Costa Rica: near San 
Mateo, Pittier, no. 7027; San José, Tonduz, no. 12,967; Aragon, Rio 
Turrialba, Pittier, no. 13,241 (no. 7504 of J. D. Smith’s distrib.) ; San 
Miguel, Biolley, no. 7423 ; Rio Zhorquin, Tonduz, no. 8532; Talamanca, 
Pittier, no. 8676; Boca de Zhorquin, in thickets, Zonduz, no. 8699; 
Atirro, Carthago, J. D. Smith, no. 4872; Rio Turrialba, Carthago, J. D. 
Smith, no. 6610. Guaremata: Rio Samala, Retalhuléu, J. D. Smith, 
no. 2854. 
+ + Body of the achenes rounded (as in Wedelia) not strongly angled, but winged, 
strongly constricted near the summit; awns usually short. 
++ Shrubs or perennial herbs. 
39. Z. HISPIDA, Gray. Branching shrub, about 1 m. high, strigose- 
hispid: Jeaves rhomboid-lanceolate or ovate-lanceolate, acute at the base, 
y sessile or nearly so, sparingly dentate or subhastately lobed, generally 
| strigose on both sides: peduncles terminal, solitary or occasionally in a 
cyme of 3, very long; heads about 1 cm. high; involucre 2-seriate, 
cylindraceous-campanulate, generally less than 1 cm. wide; outer bracts 
lanceolate, subfoliaceous : ligules broad, conspicuous: achenes variable 
as to wing and size; those of the ray-flowers commonly 3-angled, with 
2 or occasionally 3 wings; achenes of the disk-flowers broadly 2-winged 
or with the wings reduced to 2 upwardly directed auricles; pappus sepa- 
rated from the body of the achene by a strong constriction or neck bearing 
4 somewhat expanded row of very short squamellae and 2 or 3 short awns. 
— Proc. Am. Acad. xix. 10 (1883). Z. texana, Gray, Pl. Wright. ii. 
112 (1852). Stemmodontia scaberrima, Cass. Dict. Sci. Nat. xlvi. 407. 
? Wedelia hispida, HBK. Nov. Gen. et Spec. iv. 215 (1820). Wirtgenia 
texana, Sch. Bip. in Seemann, Bot. Voy. Herald, 304 (1852-57). 
Viguiera longipes, Coulter, Contrib. U. S. Nat. Herb. i. 41 (1890). — 
Southwestern United States to Central Mexico. Specimens examined, 
— Texas: Austin, Hall, no. 341 ; Crocket County, Reverchon, no. 15423 
southwestern part of the state, Wright, no. 354, Palmer, no. 630; Rio 
de Medina, Berlandier, no. 2460; Arroyo de Colorado, Berlandier, no. 
2553 ; Nueces County, Heller, no. 1479; New Braunfels, Lindheimer, 
no. 436, Mex. Bound. Surv: no. 590; Kerr County, Bray, no. 1995 
