482 CORRIGIOLACEAE 
SIPHONYCHIA T. & G. Annual or biennial herbs with s 
poak stems and branches. Leaves with narrow, somewhat fleshy, 
curved blades. Cymes several- to many-flowered, po densely ch in 
age. Sepals broad, narrowly or widely hooded at the apex and minutely or 
obseurely euspidate, pale or pale-margined, longer or shorter than the hypan- 
thium. Utricle ineluded.—Following are the only known species.—Spr.—fall. 
Sepals aee at the tip, with an evident but minute cusp, erae bas the 
hypanthiu S. diffus 
Sepals brondened at the tip, with an obscure cusp, shorter than 
e panthium. 
Cymes many-flowered: cymes with minute bracts. S. americana. 
Cymes few-flowered: cymes with foliaceous bracts. 3 S. pauciflora. 
S. diffusa Chapm. Stem and branches 1-6 dm. long, minutely pale-pubes- 
cent: blades of the d pd leaves du iE linear-oblanceolate, or linear- 
spatulate to almost linear, 0.5-2.5 cm. long, 
hirsutulous: cymes ultimately ien glomer 
ulate: flowers over ed sepals 
ovate to lanceolate, as Ee e hypan- 
vac or unl longer, d eh ice E iis 
the e apex and a cusp.—. 
cA nds. perce adis and RUD. 
Coastal Plain, Fla. to La. and Ga. 
S. americana (Nutt) T. & G. Stem and 
bran : g, minutely retrorse- 
pubescent when young, obscurely pubescent 
or ge: of the cauline 
TWIST 
LADLNE MEC or 
= 
i 
usually pale agian ciliate: flowers scarcely . 
1.5 mm. long: sepals Bs as long as the noo or buon with a 
broad “dilated ‘hood at the inflexed a apex and an obscure cusp.—Sandhills, dry 
pinelands, and old fields, Coastal Plain, Fla. to S. C. 
3. S. paucifiora Small. Stem and saci 1-6 dm. long, obseurely pubescent 
or glabrous in age: leaves similar to those of S. e na, but usually larger 
and less pubescent: flowers about 1.5 mm. ee epal obovate- cuneate, rather 
shorter than the hypanthium, with a broad dilated hood at the inflexed apex 
and an AE cusp.—Sandhills, dry woods, and pinelands, Coastal Plain, Fla. 
and G 
. ODONTONYCHIA Small. Annual or perennial herbs, with erect or 
diffuse stems and branches. Leaves somewhat fleshy, the blades narrow, entire. 
Cymes corymbose, compact or M. the cymules o Sepals concave, 
sometimes with a mere indication a blunt or acute mucro. Utricle included. 
—Only the following species ch 
Stem and branches glabrous: hypanthium glauco bá 1. O. erecta. 
Stem and branches pubescent: hypanthium pubese 
epals lanceolate when flattened : hopes Duy pubes- 
cent. 2. O. interior. 
Sepals ovate when flattened : hypanthium minutely pubescent. 3. O. corymbosa. 
1. O. erecta (Chapm.) Small. Plant glaucous, the branches erect, E dm 
tall: leaf-blades mainly spatulate, linear-oblanceolate or linear, 0.5-3 e m. long, 
