242 Plants of Sinaloa. [ ZOE 
An inconspicuous plant growing among grasses near Cofradia, 
Sinaloa. 
Dyschoriste candida. Frutescent, branching from the base, 
puberulent throughout, 3 dm. high: leaves ovate, acuminate or 
obtuse, cuneate at base into a petiole about 5 mm. long, below 
sprinkled with resinous atoms, 3-5 cm. long, 2-2.5 cm. wide: 
flowers nearly sessile, 1-2 in the axils of the leaves; calyx parted 
nearly to the base into narrow, linear lobes, 1 cm. long; bractlets 
rudimentary: corolla 5-6 cm. long, white, wilting in the sun- 
light; the tube 3 cm. long and the rounded lobes spreading 4 cm.; 
stamens nearly equal, united at base in pairs; anthers sagittate, 
mucronulate at base; posterior lobe of the stigma 4 as long as 
the anterior: capsule 1 cm. long, the stipitiform base very short; 
cells 2-seeded; seed pubescent with appressed hairs that become 
erect and mucilaginous when wetted. 
Collected near Altata, Sinaloa. 
Argithamnia discolor. Herbaceous, stems thickly covered 
with hairs, moncecious: leaves ovate-lanceolate, acuminate, nearly 
sessile, remotely denticulate, densely white-hairy beneath, green 
and nearly glabrous above, 6-8 cm. long, 2—-2.5 cm. wide: racemes 
sessile in the axils, about 6-flowered, short and crowded: stami- 
nate flowers nearly sessile; bracts ovate-lanceolate, hirsute; 
sepals linear-lanceolate, hirsute, 5 mm. long, almost equalling the 
ovate-lanceolate petals that are hirsute on the back; stamens from 
the column in two verticels; glands with no free portion: pistil- 
late flower nearly sessile; bract broad, short, striate, more or less 
lacerate; calyx segments 7 mm. long, broadly lanceolate, hirsute, 
with a prominent midnerve near their bases; petals linear-ovate, 
4 mm. long, long-acuminate, ochroleucous, hirsute; glands short, 
quadrate, more or less laciniate; ovary densely hirsute; styles 
hirsute, connate half their length and bifid half the free portion; 
capsule 6 mm. wide, hirsute; seed nearly conical, recticulate- 
rugose. 
Collected at Culiacan, 1904. 
Argithamnia gracilis. Annual, slightly canescent with mal- 
pighiaceous hairs, moncecious, about 3 dm. high, sometimes with 
a few branches: leaves ovate-acuminate, cuneate at base, entire; 
