Blake — A Revision of the Genus Viguiera 115 
wide; petioles 2 mm. long or less. Heads 1.84 em. wide, rather 
numerous, cymosely panicled; disk in fruit very strongly conic, 
7-13 mm. high, 6-9 mm. thick. Involucre 2-seriate, 4-18 mm. 
high, the phyllaries erect or spreading, linear or linear-lanceolate, 
attenuate, callous-mucronulate, 3-vittate, herbaceous and green 
throughout, sparsely hispid-pilose-ciliate with several-celled spread- 
ing hairs, otherwise glabrous or practically so. Rays about 8, 
oblong to broadly oval, 12-18 mm. long, nearly glabrous; disk- 
corollas puberulous below, 2.8 mm. long (tube 0.6 mm.), the 
lanceolate recurved teeth longer than the throat. Pales cuspidate- 
acuminate, somewhat boat-shaped, sparsely strigillose along keel, 
4.5mm.long. Achenes blackish, very plump, striatulate, above and 
at base minutely puberulous, provided at the nearly truncate apex 
with a circle of papillae enlarged on the obscure inner and outer 
angles into a slight tooth or almost a narrow wing, the latter some- 
times also observable toward the base of the achene, 2.3 mm. long, 
1.3 mm. wide, 1 mm. thick. Pappus none. — Rudbeckia ? Portert 
Gray! Pl. Fendl. 83, footnote (1848); Chapm. Fl. 8. U.S. ed. 1. 
228 (1860). Gymnolomia Porteri Gray, Proc. Am. Acad. xii. 59 
(1876), & Syn. Fl. i. pt. 2. 269 (1884); Meehan, Nat. Flowers, ser. 
1. ii. 137. t. 35 (1879); Chapm. 1. ¢. ed. 3. 251 (1897); Rob. & 
Greenm. Proc. Bost. Soc. Nat. Hist. xxix. 91 (1899); Small, Fl. 
S. E. U. 8. ed. 1. 1252 (1903), ed. 2. 1252 (1913). — GEORGIA: 
Stone Mt., De Kalb Co.: Aug. 1846, 7’. C. Porter (typ: G.), 1848, 
Ravenel (G.), 1851, H. Hendee (G.), 1876, Canby (G.), 1881, R. B. 
Watson (G.), 1883, J. Donnell Smith (G.), 335 m., 1893, Small (G.), 
1897, Biltmore Herbarium 3916, (G.), 1899, A. Ruth 42 (G.), 1900, 
Pollard & Maxon 459 (G.), Oct., Curtiss 1434 (G.); also in a mea- 
dow near Loganville, Walton Co., 11 Sept. 1894, 305 m., Small 
(G.). — Capt. Smith’s label bears the following notes: : Juices 
somewhat resinous. Growing in dense patches on summit and 
slopes wherever vegetable mould has accumulated on the granite 
rock; and a few plants occurring pak in the swamp at the base of 
the mountain.’’ — Flowering July—O 
64. V. obscura (Blake), comb. nov. Slender erect annual, 
sparsely branched above, 1.9-3.5 dm. high, the stem hispidulous 
and strigose. Lower leaves (3-7 pairs) opposite, the others alter- 
nate, oblong-ovate or oblong-lanceolate or lanceolate, acute to 
subacuminate, cuneate at base, crenate-dentate or the upper en- 
