172 Contributions from the Gray Herbarium 
dotted, 3(—5)-nerved, venose-reticulate, the lower 5.5—6.5 em. long, 
2.5-3.5 em. wide, the upper gradually reduced; petioles 1 mm. 
long or less. Heads about 8, 3.3 cm. wide, on naked or bracteate 
tuberculate-hispidulous peduncles 4.5—13 cm. long; disk 16-18 mm. 
high, 2-2.5 em. thick. Involucre 4-seriate, strongly graduated, 
12-14 mm. high, the phyllaries oval (outer) to oval-oblong (inner), 
rounded at apex, densely tuberculate-strigillose, costate-vittate, 
indurated, the very short appressed subherbaceous apex ciliolate, 
subsearious on margin. Rays about 12, oblong, yellow, very 
sparsely puberulous on back, 8 mm. long, 2mm. wide; disk-corollas 
yellow, strigillose especially below, 7 mm. long (tube 1.8 mm.). 
Pales truncate or rounded, very sparsely strigillose above, 10 mm. 
long: Achenes (immature) sericeous, 4.7 mm. long. Awns 2, un- 
equal, more or less ampliated below, 1.8-2.6 mm. long; squamellae 
about 6, united on each side nearly to apex, fimbriate, firm, 1.8 mm. 
long.— BRAZIL: without locality, Pohl 582 (rrp: K., fragm. G.). 
Section 6. Lxrcuta (Cass.) Gardn. (as to syn. only). Herbae 
perennes plus minusve ramosae, foliis alternis vel oppositis line- 
aribus vel lanceolatis rare obovatis, capitulis paucis vel numerosis 
paniculatis majusculis vel mediocribus, involucri 4—7-seriati valde 
gradati phyllariis saepe oblongis valde induratis costatis vittaus, 
apice abrupte herbaceis vel subscariosis vel induratis. — Viguiera 
sect. Leighia Gardn. Lond. Journ. Bot. vii. 400 (1848), as to name- 
bringing synonym only. Leighia Cass. Dict. Sci. Nat. xxv- 435 
(1822), as to type species (L. elegans Cass. = V. linearis). — Her- 
baceous perennials of Mexico and Lower California, with a strongly 
graduated 4~7-seriate involucre, the phyllaries with very strongly 
indurated base and short abrupt herbaceous or subscarious ape%, 
or this obsolescent. Gardner’s section Leighia, although resting 
on Leighia Cass., was composed of five species belonging to the 
genus Aspilia. 
Pigg So lao g hen nap a a 
b adly obovate, distinctly petioled.......... 129. V. purisimae. 
b. Leaves lanceolate or linear-lanceolate, subsessile, c. 
c. Phyllaries densely pilose-ciliate.................. 130. _V. montana. 
¢c. Phyllaries minutely ciliolate................... 131. V. Goldmann. 
128. V. uinzaris (Cav.) Sch. Bip. Branched, about 1 m. high, 
the stem slender, pale, striatulate, subglabrate below, densely 
OE AOR ow eee: a ee ee 
