12 NORTH AMERICAN FLORA [VOLUME 33 
late flowers orbicular, hooded, scarious, densely glandular-puberulent, reticulate-veined, 
erose on the margins, in age 13 mm. long and 10 mm. wide; those subtending the staminate 
flowers few, linear, glandular; staminate flowers about 8; corolla funnelform, pubescent; 
style about one half as long as the corolla-tube; pistillate flowers 2-5, usually 3; achenes 
oblanceolate, brown, 6 mm. long, 2-3 mm. wide, the toothed margin less than 1 mm. wide, 
pubescent and glandular-dotted and carinate on both surfaces. 
TYPE LOCALITY: Soda Lake, Carson Sink, Nevada. 
DISTRIBUTION: Western Nevada and adjacent California. 
ILLUSTRATION: Muhlenbergia 4: 3, f. 
3. Dicoria canescens A. Gray; Torr. Bot. Mex. Bound. Surv. 
87. 1859. 
Dicoria calliptera Rose & Standley, Contr. U.S. Nat. Herb. 16:18. 1912. 
An annual herb, becoming woody at the base; stem 3-10 dm. high, striate, hispidulous; 
lower leaves opposite, peticled, with lanceolate dentate blades; upper leaves alternate; petioles 
about 1 cm. long; blades oval or suborbicular, 1-3 em. long, densely white-hirsute on both 
sides, those of the flowering branches similar but much reduced; heads numerous in leafy pan- 
icles; involucre hemispheric, 3-4 mm. broad; bracts 5, elliptic, white-hispid; paleae subtending 
the pistillate flowers membranous, orbicular, glandular-puberulent, and glandular-erose on the 
margin, in age becoming 6-8 mm. broad; those subtending the staminate flowers slender, 
slightly clavate; staminate flowers 5-7; corolla funnelform, sparingly pilose; style very short; 
stigma minute: pistillate flowers 2; achenes 6 mm. long, cblong, slightly pilose at the apex and 
along the outer rib, dorsiventrally flattened with dentate wings on the margins and low ribs on 
the faces, the ridge on the inner face often developed into a low crest near the apex. 
TYPE LOCALITY: Sandy desert of the Gila, Arizona. 
DISTRIBUTION: Arizona, southeastern California, and southern Utah. 
ILI ISTRATIONS: Bot. Mex. Bound. Surv. pl. 30; Contr. U. S. Nat. Herb. 16: pl. 12. 
4. Dicoria oblongifolia Rydberg, sp. nov. 
An annual; stem 5-6 dm. high, divaricately branched, canescent-hirsutulous with ascena- 
ing hairs; leaves alternate; upper leaf-blades oblong or elliptic, dentate, 1-2 cm. long, 3-ribbed, 
hirsute-canescent on both sides; heads numerous in leafy panicles; involucre hemispheric, 3-4 
mm. broad; bracts 5, elliptic, white-hirsute; paleae subtending the pistillate flowers orbicular, 
about 8 mm. long, glandular-puberulent, white; those subtending the staminate flowers fili- 
form, hirsute; staminate flowers 5 or 6, the corolla pilose; pistillate flowers mostly 2; achenes 
oblong, slightly hirsute and glandular-puberulent, dorsiventrally flattened, 5-6 mm. long, 
somewhat keeled on the faces; margin dcuble-toothed, about one-fourth as broad as the body. 
Type collected in southern California, 1875, Dr. E. Palmer 636 (U. S. Nat. Herb.). 
DISTRIBUTION: Southern California and Lower California. 
5. Dicoria hispidula Rydberg, sp. nov. 
An annual herb, becoming woody at the base; stem 2-10 dm. high, divaricately branched, 
puberulent and hispidulous with pustulate-based hairs; leaves mostly alternate, short-petioled; 
leaf-blades suborbicular, 1-2 cm. long, canescent-hirsute and with scattered stiff hairs; heads 
numerous in leafy panicles; involucre hemispheric, 3-4 mm. broad; bracts 5, elliptic, white- 
hispid; paleae subtending the pistillate flowers elliptic or oval, 4-5 mm. long, hispidulous and 
somewhat glandular, greenish-white; those subtending the staminate flowers filiform, spar- 
ingly hairy; staminate flowers 5 or 6; corolla funnelform, sparingly pilose; pistillate flowers mostly 
2; achenes somewhat oblanceolate, slightly hairy, 4-5 mm. long, dorsiventrally flattened, 
slightly ribbed on the faces; margin dentate with small, somewhat horny teeth. 
‘Type collected on the Whitewater Desert, California, 1881, S. B. & W. F. Parish 7 (U.S. Nat. 
Herb.). 
DISTRIBUTION: Southern California. 
6. Dicoria paniculata Eastw. Proc. Calif. Acad. II. 6: 298. 1896. 
An annual herb, branched from the base; stem 3-5 dm. high, with ascending branches, 
hispid-strigose; leaves opposite and alternate, entire or sparingly dentate, 2-8 cm. long, triple- 
