196 NORTH AMERICAN FLORA [VoLumE 21 
purplish-red, corolla-like, constricted above the ovary. Stamens 5-7; filaments unequal, 
capillary, united at the base into a short cup; anthers didymous. Ovary globose; style capil- 
lary, straight; stigma capitate. Anthocarp ellipsoid, smooth, glabrous, usually with 10 light- 
colored vertical lines. Seed with the testa adherent to the pericarp; embryo uncinate, in- 
closing the copious endosperm, the cotyledons orbicular, concave, the radicle descending, 
incurved. 
Type species, Hermidium alipes S. Wats. 
1. Hermidium alipes S. Wats. Bot. King’s Expl. 286. 1871. 
Plants 2-4 dm. high, the stems arcuate-ascending, sparsely branched, the branches very 
stout, glaucous, glabrous, or obscurely puberulent above; petioles stout, 2-12 mm. long; leaf- 
blades orbicular-ovate, suborbicular, or broadly oval-ovate, 4-7 cm. long, 2-5.5 em. wide, 
often as broad as long, rounded to obtuse at the base or rarely subcordate, often short-decurrent, 
obtuse to broadly rounded and apiculate at the apex, or the uppermost actte, green, thick and 
succulent, with rather prominent lateral nerves, glabrous; flowers in heads of usually 6, these 
on peduncles 3-10 mm. long, the peduncles at first minutely puberulent but soon glabrate; 
bracts oblong to broadly ovate, 1.5—2.5 cm. long, subcordate or rounded at the base, rounded 
or obtuse at the apex and often apiculate, rarely slightly united at the base, thin, glabrous, 
often tinged with red; perianth 2 cm. long, the limb about 1.7 cm. broad, glabrous; stamens 
equaling or slightly shorter than the perianth; fruit 7 mm. long, 3.5~4 mm. diameter, slightly 
narrowed at both ends, dark-olive. 
TYPE LOCALITY: On low foothills from the Big Bend of the Truckee River to Oreana on the 
Humboldt, Nevada. 
DistTRIBUTION: Western Nevada and adjacent California. 
ILLUSTRATION: S. Wats. Bot. King’s Expl. pl. 32. 
10. OKENTIA Schlecht. & Cham. Linnaea 5: 92. 1830. 
Prostrate annual herbs, much branched, pubescent. Leaves opposite, petiolate, those 
of a pair very unequal, the blades broad, entire or sinuate. Flowers perfect, solitary, axillary, 
subtended by 3 minute bracts, the pedicels at first short, but elongating during and after 
anthesis and penetrating into the soil; perianth funnelform, with a short slender tube, this 
constricted above the ovary, the limb 5-lobed, the lobes emarginate, induplicate-plicate. 
Stamens 10-18; filaments capillary, unequal, connate at the base into a short cup; anthers 
didymous. Ovary oblong; style filiform, exserted; stigma capitate, smooth. Anthocarp oval, 
rugose, spongious; ttricle oval, the pericarp thin. Seed oval; embryo conduplicate, the 
cotyledons broad, enclosing the copious farinaceous endosperm; radicle elongate, ascending. 
Type species, Okenia hypogaea Schlecht. & Cham. 
1. Okenia hypogaea Schlecht. & Cham. Linnaea 5: 92. 1830. 
Okenia grandiflora Standley, Contr. U. S. Nat. Herb. 13: 397. 1911. 
Okenia Rosei Standley, Contr. U. S. Nat. Herb. 13: 398. 1911. 
Stems 1-20 dm. long, much branched, the branches slender, divaricate, densely viscid- 
villous; leaves of a pair very unequal, the smaller often shorter than the petiole of the larger 
one, the petioles 0.5-6 cm. long, often longer than the blades, the blades orbicular-rhombic 
to oval, oblong, or deltoid-ovate, 1.8-5.5 cm. long, 1-4.5 cm. wide, subcordate to broadly 
cuneate at the base, unequal, broadly rounded to acutish at the apex, entire or usually sinuate, 
yellowish-green, densely covered on both surfaces with minute sessile brown glands, viscid- 
villous; bracts linear-lanceolate, long-attenuate, 2-3 mm. long; pedicels in age often 20-30) cm. 
long, slender, villous; perianth purplish-red, 3-6 cm. long, densely viscid-villous outside, the 
limb 1-3.5 cm. broad; fruit 9-13 mm. long, 6-9 mm. in diameter, strongly rugose, brown, 
glabrous; seed 7 mm. long, dark-brown. 
Tyre LocaLiIry: Sandhills near Veracruz, Veracruz. : 
DistRiBuTtion: Sandy coasts, Florida keys; Veracruz to Campeche; Sinaloa to Oaxaca; inland 
in Jalisco. : 
ILLUSTRATIONS: Contr. U. S. Nat. Herb. 13: pl. 75, 76, A; Verh. Zool.-Bot. Ges. Wien 1911: 
? 
