118 Contributions from the Gray Herbarium 
lar-puberulous, 3.2 mm. long (tube 0.7 mm.). Pales acute, mucro- 
nate, strigillose on back, 5.8 mm. long. Achenes brownish-black, 
thickened, very minutely puberulous above, 4 mm. long, 1.9 mm. 
wide. Awns somewhat ampliated below, 2.8 mm. long; squamellae 
about 8, distinct, lacerate-fimbriate, 1.2 mm. long. — Gardn.! 
Lond. Journ. Bot. vii. 399 (1848); Baker in Mart. Fl. Bras. vi. 
pt. 3. 218 (1884). Tridens longifolius Pohl ex Baker, l. c. 219, as 
syn. — BRAZIL: Goyaz: Sierra de Natividade, Dec. 1839, 
Gardner 3284 (K.); dry upland campos, Mission of Duro, Oct. 
1839, Gardner 3285 (TyPE couL.: B. M., K., tracing and fragm. 
G.); between Meiaponte and Caisara, Burchell 6311 (K.); Mrnas 
Grerags: 1840, Claussen (K.); Pohl 576 (K.). — The leaves are 
wrongly described by Gardner as opposite, and by Baker as 1- 
nerved. 
67. V. asprtiomnEs Baker. Erect herbaceous perennial, simple, 
0.6-1 m. high, the stem slender, appressed-pubescent above, glab- 
rous below, monocephalous. Leaves about 10-12 pairs, a few upper 
alternate, linear, long-acuminate, narrowed to the base, entire, 
3-nerved, green both sides, thinly appressed-hispidulous, 8.5- 
13.5 em. long, 5-7.5 mm. wide. Head long-peduncled. Involucre 
campanulate, 1.2 em. wide, 2-3-seriate, the phyllaries lanceolate, 
acute, subequal, appressed, subfoliaceous, pilose, 8-10 mm. long. 
Rays 2.5 em. long. Achenes (immature) pilose. Awns lanceolate, 
2 mm. long, thrice as long as the squamellae. — Baker in Mart. Fl. 
Bras. vi. pt. 3. 228 (1884). — BRAZIL: Marro Grosso: Fazenda 
de Santa Anna, Sello 669 (drawing of trpn: K.). — No specimens 
examined. 
68. V. angustissima, sp. nov. Herbacea perennis erecta, foliis 
lineari-filiformibus valde revolutis supra .dense lepidoto-strigosis 
subtus densissime canescenterque strigillosis 1.2-1.5 mm. latis, 
squamellis paene ad apicem connatis. 
Erect herbaceous perennial, slightly branched above, the stem 
slender, striate, pale or brownish, subglabrous below, above 
sparsely strigose, in the inflorescence tuberculate-strigillose, 
sparsely leafy, 8-10 dm. high. Leaves alternate or a few lower 
opposite (the lowest pair very small), linear-filiform, acuminate, at 
apex subobtuse, callose-mucronate, entire, sessile, strongly rev? 
lute, above green, densely lepidote-strigose, beneath strigose 
along costa, elsewhere very densely and canescently strigillose, — 
