456 POLYGONACEAE 
turgid-lenticular, 2.5 mm. long, or less. [Polygonum densiflorum Meisn.]— 
Swamps, ponds, lake-borders, and ditches, Coastal Plain, Fla. to Tex., Mo., and 
N. J.—(W. I., Mez., S. 2 
3. P. longistyla Small! Annual, sometimes with creeping woody branches, 
more or less glandular-pubescent above: Mo EAE lanceolate, 3-12 em. long, 
idum 
ew. ent: 
on account E the andis stamens and style: Sorel ciliate: gene p 
pink: sepals not punctate: achene ere or orbicular-ovate, long, 
rather sharply pointed.—Low grounds, wet woods, and ii dE Miss. to 
Tex., Okla., Mo. 
3a. P. mississippiensis (Stanford) Small. Plant perennial, quite woody be- 
low, glabrous up to the inflorescence: leaf-blades lanceolate, s 10 em. long, 
strigillose o n both sides, long-a dre peduneles mo pun Ead 
p ieles often slightly gd -like: per ink: sepals iot ae : achene 
rrowly ovoid, 2-2.5 mm. long, de idedly pointed. [Polyg mm. eite ippi- 
pes Stanford ]—Low SUME fields, and ditches, Miss. to Tex 
4. P. pennsylvanica (L.) Small Annual, the upper branches finely glandular- 
pubescent: leaf-blades jud 4-22 em. long: oereae eciliate: panicles stout, 
erect: ocreolae eciliate or nearly so: per anth becoming 3.5—4 mm. long; sepa als 
pink or light-purple, not punctate: stamens and style short: achene flat-lenticu- 
lar, 3-3.5 mm. long, shining, short-beaked.— (PINKWEED. E aste-places, road- 
sides, and cult. grounds, various pene Fla. to Tex., Minn., and N. S— 
(Me) 
5. P. lapathifolia (L.) S. F. Gr a Annual, glabrous or nearly so: leaf- blades 
lanceolate, sometimes narrowly so, 5-20 c m. lo ong: ocreae eciliate: panicles slen- 
der, nodding: ocreolae eciliate, eee perianth icu 2.5-3 mm. long; 
a whitish to rose-colored: achene flat-lenticular, 2-2.0 m 215 [ Poly- 
onu 
m incarnatum Ell J— (PALE. ~PERSICARIA. )——River banks, € wet grounds, 
various provinces, Fla. to Tex., Calif., and Can.—(W. I., Mex., C. A., 'Q. W.) 
6. P. Careyi (Olney) Greene. Annual, hispid: and more or less ream 
E blades elliptie- eri to linear-lane eolate or almost linear on the u 
part of the plant, 5-16 em. long: ocrea e nde -fringed: esed eee ee 
nid nodding: ie ciliate, rounded: perianth becom m. long; 
sepals purplish: achene o -lenticular, -2.5 mm. long, a ia nd 2n ning.— 
Swamps, MI and elearings, various SN Fla. (perhaps introd.), N. 
J. to Ont. and Me. 
7. P. Persicaria (L.) Small. ere glabrous or partly d leaf-blades 
laneeolate to linear-lanceolate, -18 em. long, often with a central ie te E 
ocreae fringed: panicles stout: cune ciliate: perianth becom ae 3 mm. lon 
or nearly so; sepals pink, purple, green, or soca h, not oo achene Cee 
lenticular or 8-angled, 2-2.5 mm. long, s ning.— LADY’S-THUMB. HEART- 
WEED.)—Cult. grounds, waste- P and Bere various provinces, Fla. to 
Tex., Calif., and S Can. Nat. of Eu. 
8. P. opelousana (Ridd.) Small. Perennial, more or less strigillose: leaf- 
blades linear to linear-lanceolate, 3-11 em. long: ocreae o -fringed: panicles 
slender, erect: ocreolae long-fringed: perianth becoming 2-2.5 mm. long; sepals 
greenish-white, not punctate: achene 3- -angled, 2 mm. long or nearly so, shin- 
1 The related species, F. mexicana Small and P. segetum (H. B. K.) Small, seem 
not to be definitely known from our range; the former is to be expected in S Tex. 
the latter in S Fla. 
