104 Contributions from the Gray Herbarium 
wide; disk-corollas yellow, puberulous below, 3 mm. long (tube 
0.6 mm.). Pales glabrous, mucronate, 5-5.5 mm. long. Achenes 
black, rufous-silky, with crustaceous carpopodium, 2.5 mm. long. 
Awns 2, slender, 1.7 mm. long; squamellae 4, laciniate-fimbriate, 
1 mm. long.— COLOMBIA: Carthagena, 1826, Billberg 188 
(type: Ber., photog. and fragm. G.); Santa Marta, 1898-1901, 
Herbert H. Smith 517, 1976, 2619 (Mo.). VENEZUELA: near 
Tovar, 610 m., 1856-57, Fendler 1962 (G., K.). 
53. V. TeENuIS Gray. Slender annual, simple or branched, 1.5- 
5 dm. high, bearing 1-7 long-peduncled heads. Stem strigose or 
strigose-hispid below. Leaves opposite to the inflorescence, re- 
mote, lanceolate to lance-ovate, acuminate, mucronate, rounded 
or cuneate at base, entire or obscurely appressed-serrulate, strigose- 
pilose both sides with somewhat tuberculate-based hairs, 2.2-6 cm. 
long, 4-20 mm. wide, the lower somewhat reduced; petioles almost 
none. Peduncles strigose, naked or bracteolate, 2.3-16 cm. long; 
heads 1.4-1.7 cm. wide; disk 8-9 mm. high, 5.5—(fruit)12 mm. 
wide. Involucre 2-seriate, 5-8.5 mm. high, the phyllaries narrowly 
linear-lanceolate, attenuate almost from the base, canescently 
strigillose, the outer shorter, slightly striate and indurated below. 
Rays 8, pale yellow or white, oval to oblong-oval, 4.5-6 mm. long; 
disk-corollas yellow, hispidulous, 5.5 mm. long (tube 0.3 mm.), 
very slender. Pales scarious-membranaceous, strigillose on keel 
and at the purplish acute apex, 7.5 mm. long. Achenes subseri- 
ceous, slightly turbinate, 2.5 mm. long. Awns slender, occasionally 
ifid, 5.5 mm. long; squamellae about 6, free, oblong, laciniate, 
purple-maculate, 1 mm. long. — Gray! in Wats. Proc. Am. Acad. 
xxii. 426 (1887). — Two color forms are distinguishable. 
Forma typica: radiis flavis. — V. tenuis Gray, l. c. Melanthera 
lanceolata Klatt (non Benth.), Bull. Soc. Bot. Belg. xxxi. pt. 1. 205 
(1892), at least as to Pittier 4675. MEXICO: Srnatoa: Co- 
fradia, Oct. 1904, Brandegee (G., U. S.); Jatisco: Rio Blanco, 
Oct. 1886, Palmer 657 (rypE couu.: B. M., G., K., Mo.); dty 
slopes of barranca near Guadalajara, 6 Nov, 1888, Pringle 1725 
(B. M., G., K., Mo., U. S.); hillsides near Guadalajara, 1525 m., 
6 Oct. 1903, Pringle 11612 (G., K., U. S.); Guadalajara, 30 Sept: 
1903, Holway 5079 (SO ee ca} Cerro de Fortin, 1615 m., 29 
Sept. 1895, Conzatti 843 (G.); Fortin, 1600 m., 25 Oct. 1896, 
Conzatti & Gonzdlez 384 (G.); hills above Oaxaca, 1830 m., Oect- 
