Blake — A Revision of the Genus Viguiera AT 
high, the phyllaries loose or spreading at apex, the two to three 
outer series narrowly obovate or oblong-obovate, with indurated 
ribbed base and herbaceous or subherbaceous subacute apex, the 
innermost broader, with ampliated venulose submembranaceous 
obtuse tip; all subdensely but inconspicuously strigillose with 
minute hairs, and ciliolate. Rays “ few,” scarcely seen, ‘‘ 1.2-1.4 
em. long’; disk-corollas puberulous below, 3 mm. long (tube 0.8 
mm., ampliated at base). Pales subglabrous or sparsely puberulous 
along the obscure keel and toward the abruptly pointed sometimes 
3-toothed tip, 3.4-4.8 mm. long, the outermost somewhat firmly 
embracing the achenes. Achenes striatulate, glabrous, 1.8 mm. 
long. Pappus none. —Gymnolomia latibracteata Hemsl.! Biol. 
Centr.-Am. Bot. ii. 162 (1881); Rob. & Greenm.! Proc. Bost. Soc. 
Nat. Hist. xxix. 100 (1899). —-MEXICO: Stnatoa: Cerro de 
Pinal, Seemann 1485 (TYPE coLL.: G.). 
2. V. flava (Hemsl.), comb. nov. Stems several, decumbent 
from a thick woody root, simple or sparsely branched, bearing 1-4 
heads, strigose or strigillose or sometimes tuberculate-hispid-pilose 
with subspreading or ascending hairs. Leaves mostly opposite, 
oval or oval-oblong to lanceolate or even linear-lanceolate, acute 
to acuminate at each end, entire or obscurely serrulate, lepidote- 
strigose or -hispid-pilose and nearly equally green both sides, 
3-nerved, 3-7.3 cm. long, 0.6-2.5 em. wide; petioles scarcely mar- 
gined, 1-6 mm. long. Peduncles monocephalous, 2-9.5 cm. long, 
pubescent with mostly appressed hairs; heads 3 em. wide; disk 
8-11 mm. high, 9-12 mm. thick. Involucre 4-seriate, graduated, 
9-12 mm. high, the outermost phyllaries lanceolate, acute, herba- 
ceous, 6-7.5 mm. long, 1.2-1.8 mm. wide, more or less spreading; 
the next series longer and slightly broader, the third still broader, 
longer, and less acute, the innermost especially in fruit still longer, 
often exceeding disk, with siccate subchartaceous-membranaceous 
rounded apex; all blackish-green, strigillose on their exposed sur- 
faces, ciliate elsewhere. Rays 8-10, black-veined, 1-1.4 cm. long, 
2.5-4 mm. wide; disk-corollas sparsely strigillose below, 5.3 mm. 
long (tube 1.1 mm.). Pales acutish and tridentate at apex, strigil- 
lose above, 7 mm. long. Achenes blackish or mottled, appressed- 
pubescent or glabrous, 4 mm. long. Pappus present or absent; 
when present of 2 (rarely 3-6) awns, slender, widened at base, 
3 mm. long, and about 4 squamellae, free, irregularly lacerate- 

