450 POLYGONACEAE 
3. P. brachystachya Meisn. ien slender, 2-6 dm. tall, copiously branched: 
leaves 5-13 mm. long, bright-gree ird Psi Tacemes s short and rela- 
tively stout: E closely tuin ry oblique: inner sepals becoming 
pisi ovate to subreniform, over 2 mm. Tong: dd broadly rhombic-ovoid, 
1.5 mm. long.—Pinelands, S pen. Fla.—Sum.-fall. 
4. P. Croomii Chapm. Plant very slender, 2-5 dm. tall, copiously branched: 
lon 
leaves 9-21 mm. long, glaucous, fugaceous: racemes relatively lo ng a pun = 
slender: ocreolae scarcely imbrieate, A oblique: inner sepals 
oval: achene narrowly rhombic-ovoid, 1.5 mm. long. T Sandhills, Coastal 
Plain, N Fla. to S. C.—Sum.-fall. 
5. P. d (F. -o pes Plant stout, 5—12 dm. tall, ins 
lon 
branched: leaves numero 1-3 ng, per ersistent: racemes stout: 
sepals becoming o orbie ular p oval- ei ula achene rhombic-ovoid, about an 
long. [Gon americanum F. & M. Metsnerianp Shuttlw. }—Sandy 
soil, sandhills, and hillsides, Coastal Plain and adj. provinces, S. C. Tex. 
and M —fal 
6. DENTOCERAS Small. Depressed, copiously branched shrub. join 
igna numerous, crowded on the branchlets, narrow, persistent. Flow 
bilif lon 
ite, short stro orm racemes, rather epis , the din An 
inu den from the ocreolae at anthesis, m d by a e braetlet within 
the ocreolae which forms a circular ho han which the pedicel protrudes. 
covering the inner. Achene very broad, in- 
cluded.—One species. 
1. D. myriophylla Small. Branches radially 
prostrate, 2-25 dm. long, copiously branched, 
the branchlets often short: leaf-blades ela- 
vate, what fleshy, 3-12 mm. long: 
i de powdered often in small panicles: 
fi 
than outer, oval, oen -ovate, or slightly 
obovate, 5-3 na yee lus 1 
ovoid, abou pe —(W 
Dee —BSerub a “Sandhills, S ped of Lake Legion, Fla.—All year Mo 
spicuous on account of the numerous branches with myriad leaves, disposed in 
large green mats on the white sand. 
T. e Small. Annual died branched firm-herbaceous plants. 
Leaves few, remote, early deciduo Flowers white or pink-tinged, in erect 
lax racemes, ps rt-stalked, the rm ace if at all exserted from the 
ocreolae in anthesis. Inner sepals accrescent only at the base, thence spreading 
and exposing the achene, merely elongating, smooth, not wrinkled. A 
slender, sometimes subulate. [Polygonella Michx. in part.]—Represented by 
the following species only.—JOINTWEEDS. 'WIREWEEDS.—The leaves are early 
deciduous. 
* 
Inner sepals becoming longer than the outer: achene acuminate, the tip much ex- 
serted from the calyx: stipe-like base of the hypanthium very short. 
Inner sepals (pistillate) linear, linear-spatulate, or linear- e A at maturity: 
ocreae ciliate. 
