354 
8. POLYGONUM SETACEUM, Baldw. in Ell. Sketch, i. 455 (1817). 
North Carolina (Curtis); Florida (Chapman); Louisiana: Fe- 
liciana (Carpenter, 1); Alexandria (Hale). 
9. POLYGONUM HIRSUTUM, Walt. Fl. Carol. 132 (1788). 
P. hirsutum, Walt., var. dasyphyllum, Meisn. in D.C. Prodr. 
xiv. 103 (1856). 
Middle Florida (Chapman); Eastern Florida (Leavenworth); 
Mayport and Jacksonville (Keeler); Georgia to North Carolina 
(fide Meisner). 
Var. GLABRESCENS, Meisn., in D.C. Prodr. xiv. 103 (1856). 
Northern Florida at Lake Jacnony (Rugel, 86); lake near 
Tallahassee (Rugel). 
10. POLYGONUUM OPELOUSANUM, Riddell, New Orleans Med. 
Surg. Journ. viii. 760 (1852), name only. 
Plant apparently two to three feet tall, slender, erect and 
sparingly branched. Leaves narrowly linear-lanceolate to almost 
linear, two to four inches long, sessile, ciliate on the margins and 
both sides of the mid-rib, sheaths strigose and long-ciliate ; 
spikes one to one and a half inches in length, rather loosely flow- 
ered ; bracts densely bearded with bristles: flowers white ; calyx 
. five-parted ; stamens eight (?); style three-parted, short; achene 
triquetrous, smooth. 5 
Louisiana: Low prairies near Opelousas (Carpenter, 26). 
The species here proposed is most closely related to P. /y- 
dropiperoides, from which it differs by its smaller size, more slen- 
der habit, and the conspicuously setose bracts. 
11, POLYGONUM HYDROPIPEROIDES, Michx. Fl. Bor. Am, i. 
239 (1803). 
P. virgatum, C. and S. Linnea, iii, 45 (1828). 
P. mite, Pers. Syn. i. 440 (1805). 
P. australe, Thieb. in Pers. Syn. i. 440 (1805). 
Vermont, Charlotte (Pringle); Middlebury (Brainerd); Mas- 
sachusetts: Essex Co. (Oakes); Rhode Island: Providence (Ol- 
ney); New York: Bloomingdale (Torrey); Pennsylvania: Easton 
(Porter); Dauphin and Luzerne Cos. (Small); North Carolina 
(Hunter); Rowan Co. (Small and Heller); Florida: Mayport 
and Jacksonville (Keeler); Duval Co. (Curtiss, 2,402 and 2,41! 
distributed as P. setaceum, Baldwin); Lake Jacnony (Rugel, 85); 
Western Alabama (Rugel); Wilcox Co. (Buckley, 1); Mexico; 
Orizaba (Miiller); Brazil: Serra de Argaos (Gardner, 599). 
