64 Contributions from the Gray Herbarium 
17. V. oaxacana (Greenm.), comb. nov. Herbaceous, the stem 
brownish, striatulate, glabrous below, strongly striate and ap- 
pressed-puberulous above, especially in the inflorescence. Leaves 
alternate, broadly ovate or subrhombic-ovate, subacuminate, at 
base cuneate, unequally crenate-serrate or serrate (the teeth about 
25 pairs, appressed or subspreading), 3-nerved, deep green both 
sides, finely tuberculate above, very sparsely strigose or glabrate 
beneath, those of stem 13 em. long, 8 em. wide, the others much 
smaller; petioles unmargined, 0.7-3.4 cm. long, subglabrous. 
Heads chiefly in axillary and doubtless terminal few(about 3)- 
headed cymes, about 4 em. wide, on peduncles 1-2.8 em. long; 
disk 1.3-1.5 em. high, 2.1-2.5 em. wide, broadly campanulate. 
Involucre 3-sub-4-seriate, graduated, 6-8 mm. high, the phyllaries 
lanceolate, narrowed to the callous-mucronate apex, with coria- 
ceous pale-margined vittate body and more herbaceous appressed or 
rather loose tip about as long as body, more or less puberulous along 
margin and rarely on back, otherwise subglabrous. Rays “ 12-16,” 
oblong-oval, 15 mm. long, 6 mm. wide; disk-corollas sparsely 
puberulous at base of throat, otherwise glabrous, 7.5 mm. long 
(tube 2mm.). Pales firm, sparsely puberulous along keel, with a 
strong spreading barely subulate mucro, 11-12 mm. long. Achenes 
(submature) densely appressed-pilose, 4.5 mm. long. Awns 2, 
broadly paleaceous (up to 1.5 mm. broad), acutish, erose-fimbriatu- 
late above, unequal, 5.5 mm. long or less; squamellae about 6, 
free, unequal, lacerate, 1.3 mm. long or less. — Helianthus oaxa- 
canus Greenm.! Proc. Am. Acad. xxxix. 107 (1903). — MEXICO: 
between Huajuapam, Oaxaca) and Retlatzingo, Puebla, 1465- 
1980 m., 19 Nov. 1894, E. W. Nelson 1985 (TYPE COLL.: G.). 
18. V. TRACHYPHYLLA Blake. Herbaceous (?); stem tubercu- 
late-hispidulous above, subglabrate below, bearing a narrow (1.5 
dm. wide) many-headed cymose panicle. Leaves opposite (except 
in inflorescence), ovate, acuminate, abruptly narrowed about 2 cm. 
above the base into a subamplexicaul lower portion (petiole), 
appressed-serrulate, very harshly tuberculate-hispidulous above, 
dark green, below scarcely paler, rather softly hispidulous along the 
veins and gland-dotted, 3-nerved, pinnate-veined, 8.3-12.3 cm. 
long, 3.5-6.3 cm. wide, the narrowed basal portion 1.4-2 cm. wide; 
naked portion of petioles broad, hispidulous, 2.5-5 mm. long, the 
bases connate. Pedicels hispidulous, 4-10 mm. long, the bracts of 
