Blake — A Revision of the Genus Viguiera 183 
thick. Involucre 2-seriate, graduated, 1.4-1.6 cm. high, the 
phyllaries lanceolate, long-acuminate, callous-mucronulate, tuber- 
culate-strigillose, subherbaceous, with about 4 pale ribs below. 
Rays 14, oblong, 1.6—-1.9 em. long; disk-corollas puberulous on 
teeth, 4 mm. long (tube 1 mm.). Pales subacute, narrow, hispidu- 
lous above, scarious-margined, 1 cm. long. Achenes (immature) 
villous on edges, sparsely appressed-pubescent on sides, 3.5-6 mm. 
long. Awns paleaceous-membranaceous, 2.5 mm. long; squa- 
mellae of each side united to apex into a broad many-nerved den- 
tate membranaceous scale, 2 mm. long. —Chod. ! Bull. Herb. 
Boiss. ser. 2. iii. 724 (1903). —- PARAGUAY: edge of woods 
along the upper Apa River, 1901-02, Hassler 7667 (coTyPE COLL.: 
B. M., fragm. G.); do., Jan. 1902, Hassler 8349 (coTyPE COLL.: 
B. M.); Santa Elisa, Gran Chaco, Dec. 1903, Hassler 2652 (B. M.). 
140. V. nupicauLis Baker. Herbaceous, erect or ascending, 
the lower part of stem not known. Stem simple, purplish, terete, 
striatulate, hispid-pilose with longer ascending and shorter ap- 
pressed white hairs with subtuberculate persistent bases, 3 dm. 
high and more. Leaves opposite, few, narrowly oblong or oblong- 
lanceolate, acutish, at base slightly cuneate, serrulate chiefly above 
the middle (teeth 5-7 pairs, appressed), 3-nerved, green both sides 
and hispid-pilose with long spreading or divaricate tuberculate- 
based hairs, apparently somewhat glutinous, 4.5-5.9 cm. long, 
7-9.5 mm. wide; petioles 1 mm: long, hispid-pilose. Head solitary, 
5 em. wide; peduncle pubescent like stem, naked, 2.4 dm. long; 
disk 1.2 em. high, 1.6 em. thick. Involucre 3-seriate, 1.1 cm. high, 
graduated, the phyllaries lanceolate to lance-oblong, acuminate, 
tuberculate-hispid-pilose, strigose, callous-mucronulate, herba- 
ceous, the inner indurated and costate at base, all appressed. Rays 
about 16, oblong, sparsely strigillose on back, 2.4 em. long, 5 mm. 
wide; disk-corollas puberulous below, 6.5 mm. long (tube 1.4 mm., 
teeth 1 mm.). Pales narrow, glabrous, slightly keeled, cuspidate- 
acuminate, 8.5 mm. long. Achenes (immature) subsericeous- 
appressed-pilose, truncate at apex, 3.5 mm. long. Awns membra- 
nous-paleaceous, lanceolate, acutish, fimbriatulate, 2.5 mm. long; 
squamellae of each side (ca. 4) united almost to apex into a broad 
scale equalling or slightly shorter than the awns. — Baker! in 
Mart. Fl. Bras. vi. pt. 3. 228 (1884). —- URUGUAY: Maldonado, 
Capt. King 40 (Voyage of H. M.S. Adventure and Beagle, 1826- 
30) (type: K.). 
