POLYGONACEAE 
All three sepals developing tubercles: whorls of the inflores- 
cence, at least the lower ones, leaty- bracted. 
nu e about 3 mm. long: achene less than 
ong. 9. R. conglomeratus. 
Mature. sepal-wings 5-6 mm. long: achene 2.5-3 mm. fone 10. R. cuneifolius. 
IV. OBT 
Blades of the lower Sera cordate or sita. p the base: 
tall perennial plant 
Stipe-like base o the Dopanthium much shorter than the . 
sepal-wings: two sepal-wings with callosities. 11. R. pulcher. 
sepal-wings: one sepal-wing with a callosity. 12. R. obtusifolius. 
se: low annual plants. 13. R. persicarioides. 
1. R. hastatulus Baldw. Plant 1.5-13 dm. tall: basal and lower stem-leaves 
| 5- . long; blades with 2 spr a, auricles at the base or sometimes 
merely undulate: sepal-wings reniform to 
ovate-reniform, 3.5-4 mm. wide: achene 
nearly mm. long.—Sandy soil, roadsides, 
fields, and woods, Coastal Plain and adj. 
provinces, Fla. to Tex. . Kans., ll, and 
Mass.—Spr. 
. R. altissimus Wood. Plant 6-20 dm. tall, mo 
the panicle ed ascending: low stem- 
l m. g; blades lanceolate to 
st a p M nd crisped: sepal- 
Ings triangular-o g, longer 
pos wide, slightly Mere achene about 
3 long.—(PALE-DOCK. EACH-LEAVED 
DOCK. -.)—River-bànks, ditches, and low woods, 
various P dimus rarely Coastal Plain, Ga. to Tex., Nebr., and  Mass,— 
Spr.-su 
3. R. Berlandieri Meisn. Pant 5-7 dm. tall, the panicle-branches loosely e 
ered: lower stem-leaves 8-17 cm. long; blades elliptie: often narrowly so, 
or nearly so: whorls of the i nflorescence often separated: sepal-wings deltoid, 
about 4 mm. long, leathery; achene fully 2.5 mm. long. [R. Langloisii S 
meu oo prairies, and ditches, Coastal Plain, La. and Tex.—(Mez.)— 
pr.—fa 
4. R. cris spus L. Plant 3-11 dm. acr. the panicle-branches rather elosely flow 
ered: lower stem-leaves 15-30 em. long; blades elliptic to e elliptic- “lanceolate, 
much erisped: poderi. contiguous: sepal-wings orbicular-ovate, 4—5 m 
long, undulate: achene 2.5-3 mm. long.—/( CURLED DO OE: YELLOW-DOCK. NAR- 
ROW-DOCK.) —F'ields ind waste- ‘places, throughout the U. S. and S Can. Nat. 
of Eu.—(W. I., Mex.) —Sum 
5. R. fasc iie Small Plant 5- 15 dm. tall, the n e rather lax: 
lower stem-leaves 1-2 dm. lon ng; blades ovate to broadly elliptie, rounded or cor- 
6. R. p suu Meisn. Plant 4—11 dm. tall, the panicle-branches often fas- 
tigiate: lower stem-leaves 14 dm. long; blades br Pend linear to eae incen: 
late: donee rather dense: se E i eni m, 2 Md mm pha : stipe- 
: hy g. 
` 
Li! 
