408 
the base; wings oblong, 4 mm. long; achene 3-angled, narrowly 
oblong, acuminate at both ends, 4 mm. long, browa. 
« Sandhills near the coast, Florida, A. W. Chapman.” 
Strikingly different from anything heretofore described in the 
genus but related to Polygonella polygama. It differs from all its 
relatives in its stout build, wand-like stem and remarkably large 
‘ leaves for the genus. 
6. POLYGONELLA ARTICULATA (L.) Meisn. Gen. 2: 228. 1836-43. 
Polygonum articulatum L. Sp. Pl. 363. 1753. 
Sandy beaches along the Atlantic coast from Maine to Florida 
and along the Great Lakes. 
7. PoLYGONELLA Americana (F. & M.) Small, Mem. Torr. Club, 
5: 141. 1894. 
Gonopyrum Americanum F.& M. Mem. Acad. St. Petersb. (V1.) 
4: 144. 1840. 
Polygonella ericoides Engelm. & Gray, Bost. Journ. Nat. Hist. 
S$. 25). 3527. 
 Polygonella Meisneriana Shuttlw.; Meisn.in DC. Prodr. 14: 81: 
1856. 
Sandy soil, Missouri to Georgia, south to Alabama and Texas. 
With the two excellent specimens from which Meisner drew 
his original description, to compare with a generous supply of 
Polygonella Americana and observations in the field, I cannot sep~ 
arate Polygonella Metsneriana from P. Americana, There may be 
two species in what is now included in the latter species, but the 
separation must be on different lines. 
Tue Genus WaAREA. 
I have always been impressed with the remarkably inconsistent 
descriptions that have been applied to the plant we have known 
as Warea amplexifoliia. The discovery, by Mr. Nash, of a third 
species of Warea in western Florida renewed my interest in the 
group and Jed me to investigate it. The facts seem to be as fol- 
lows: In 1822 Nuttall described Stanleya ? amplexifolia,* found- 
ing the species on a specimen from eastern Florida. This plant 
had amplexicaul leaves. In 1834 Nuttall founded the genus 
cad ete 
* Am. Journ. Sci. 5: 297. 
