180 Contributions from the Gray Herbarium 
136. V. TRICHOPHYLLA Dusén. Herbaceous, erect, “ 1.5-2 m. 
high, 7 mm. thick at base.”” Stem whitish, sparsely strigillose 
above, glabrate below, bearing 8-13 heads. Leaves filiform, above 
the flattish base so strongly revolute as to hide the single nerve, 
green, glabrous above, mucronate, the lower ‘‘ 12 cm. long,” the 
median 7-8.5 cm. long, 0.4-0.5 mm. wide, the upper gradually 
shorter. Peduncles 4-20.5 em. long, minutely strigillose, striate- 
angled; heads 3.5-4 em. wide; disk 8-11 mm. high, 1.1-(fruit) 
1.6 em. wide. Involucre 4-seriate, 7-9 mm. high, graduated, the — 
outer phyllaries linear or linear-lanceolate, the inner gradually 
broader, the innermost ovate-lanceolate, all attenuate, mucronate, 
hispidly white-ciliolate on margin, otherwise glabrous, somewhat 
indurated and vittate below, herbaceous and rather loose above, 
the inner somewhat falcate. Rays 12-16, 1.1-1.4 cm. long, 1./- 
4.5mm. wide; disk-corollas minutely hirtellous below, 3.8-4.3 mm. 
long (tube 0.5-0.7 mm.), yellow, the throat becoming purplish in 
age. Pales obtuse to subacute, mucronulate, minutely hispidulous 
above, 5.5-7 mm. long, 1.2-1.4 mm. broad. Achenes hispidulous, 
3-3.5 mm. long. Awns slender, very unequal, ampliated at base, 
purple-tinged, up to 2.5 mm. long; squamellae about 8, oblong, 
purple-tinged, dentate-laciniate, united at base, 0.4-0.6 mm. long. 
—Dusén ! Ark. Bot. Stockh. ix. No. 15. 30. f. 12 & t. 7. £. 4 (1910). 
—BRAZIL: Sao Pauno: 1816-21, A. St. Hilaire 1144 (Par.); 
Paran&: rather swampy field, Ponta Grossa, 7 Jan. 1904, Dusen 
3488 (TYPE coLL.: B. M., K., fragm. G.). 
Subgenus III. Yerbalesia, subg. nov. Herbae perennes simplices 
vel subsimplices, capitulis solitariis caulem et ramos terminantibus 
longepedunculatis majusculis, foliis lanceolatis vel oblongis Tare 
ovatis, involucri 2-4-seriati gradati vel subaequalis phyllarus 
lanceolatis basi plus minusve induratis et vittatis supra herbaceis, ee 
pappo e aristis 2 paleaceo-membranaceis et squamellis (ca. 8) Me 
utroque latere achenii in squamam apice denticulatam scaTl0S0 
membranaceam aristas saepe subaequantem conjunctis composito. 
— Species typica V. tuberosa Griseb. — Erectish perennials, prob- 
ably several-stemmed, simple or subsimple, with solitary long 
peduncled heads; pappus of two mostly membranaceous-palea” 
ceous awns shorter than or somewhat exceeding the squamellae, 
which are united on each side of achene into a denticulate mem 
