F ACEA E | 449 
pistillate sessile, the short hypanthium and 
the 6 P ted ges in two series 
forming an es perianth, the outer 
sepals developing spreading spine-like tips. 
Stamens 6. Stigmas 3, fimbriate-pinnatifid. 
Achene included, ec er species, na- 
tives of the Old World. 
1. E. spinosa Campd. Stem more or “less 
diffusely branched, Edda leaf-blades 
ovate, narrowly or bro adly so, 2-8 em. long, 
or smaller, acute or rounded at ya ais and 
minutely pointed, idu truncate to cor- 
date at the more or less auricled base, lo Son ng- 
petioled: sepals of the staminate flowers elliptie, about 2 em. long, those of the 
pistillate firm, the inner br erect firm tips, the outer with E subulate 
rigid tips: achene ovoid, 2.5-3 mm. long.—Waste grounds, W. Fla.—Nat. of the 
Mediterranean region —Spr. “fall. 
5. POLYGONELLA Michx. Perennial or biennial branched woody plants. 
eaves numerous, rather persistent. Flowers white or pink, in spreading panicles, 
the — pins at anthesis. Inner sepals accrescent, not spreading, develop- 
ing into wing-like structures wholly covering the achene, with lateral wrinkles. 
Achene stout, sometimes very broad ee by the following species.— 
S 
Leaf-blades decidedly dilated, spatulate, P or cuneate. I. POLYGAMAE. 
Leaf-blades not dilated, clavate to almost filiform II. AMERICANAE. 
POLYGAMAE 
Inner sepals becoming 2-2.5 mm. long: achene 1.5-2 mm. long. 1. P. polygama 
Inner sepals becoming 4-5 mm. long: achene 3.5-4 mm. long. 2. P. macrophylla. , 
II. ERICAN. 
Inner sepals becoming about 2 mm: fone: Sale base of the 
hypanthium barely 1 mm. lon 
Lateral racemes of the panicles. mostly less than 1 cm. 
long: sepals 1.5 mm. long in anthesis 3. P. brachystachya. 
iret racemes of the pa mostly over 1 em. long: 
als 1 mm. long in anthes 4. P. Croomii. 
Inner ‘sepals Recon about 2 A . long: stipe-like base of the 
hypanthium fully 1.5 mm. lon 5. P. americana. 
1. P. polygama (Vent.) A. Gray. Plant slender, 3-6 dm. tall, usually copi- 
ieee branched: lower leaves 1-3 em. lon ng; ae spatulate to cuneate, 3-ribbed: 
stipe-like base of the hypanthium about 
Michx. ]—(OcTOBER 
pinelands, and cit. Coastal Plain, Fla. to 
N. C., and ira to Miss.—Sum.—fall. 
E P.m rophylla Small. man stout, hane 
ne wer 
sepals becoming oval o r suborbicul fila- 
nts fu 
subulate and narrowly Janccola te: achene 
fully 1.5 mm. wide. 2 ndhills, near the. coast, 
M and W Fla—Fal 
29 
