406 
Southern Louisiana, New Orleans (Joor, according to Trelease) 
and Pointe a la Hache (Langlois). 
This is Rumex Floridanus Trelease, but not R. Ploridanus Meisner. 
With the original specimens of R. /Voridanus Meisner at hand 1 
cannot separate them from R. vertcillatus, to which Meisner says 
the species is closely related. Prof. Trelease has given the plant 
its correct position, but referred it tothe wrong species. 2. Langloisu 
is intermediate between R. verticillatus and R. altissimus in. these 
respects: its inflorescence suggests the latter, while its foliage sug- 
gests that of the former. 
POLYGONELLA Michx. Fl. Bor. Am, 2: 240. 1803. 
[Lyonra Raf. Med. Repos. N. Y. 5: 352. 1808.] 
[Sropinaca Raf. Fl. Tellur. 3: 11. 1836.] 
[Gonopyrum F. & M.; C. A. Meyer, Mem. Acad. St. Petersb. 
(VI.) 4: 144. 1240. 
Key to the Species. 
Flowers polygamo-dioecious; filaments subulate or filiform, nearly alike or some slightly 
dilated at base ; embryo axial 
Ocreae fringed with a few bristle-like cilia. 1. £, ciliata, 
Ocreae naked. 
Leaves I~5 mm. broad. 
Achenes rhomboidal; leaves filiform-subulate. 2, P. brachysta-hy@ 
Achenes ovoid or oblony-ovoid; leaves wedge- 
shaped or spatulate. 
Stems branched above ; outer calyx-segments 
not reflexed. 3. PB gracilis. 
Stems diffusely branched at the base; outer 
calyx-segments reflexed. ' . 4 F polygama. 
Leaves 5-25 mm. broad. 5. P. macr ophylla. 
Flowers perfect; filaments dissimilar, the inner conspicuously dilated ; embryo near 
one of the faces of the endosperm. 
Annual; outer calyx-segments not reflexed, the inner not 
becoming conspicuously larger than the outer. 6. £. articulata. 
Perrennial ; outer calyx segments reflexed ; the inner de- 
veloping large wings. 7. P. Americana. 
‘i POLYGONELLA CILIATA Meisn. in DC. Prodr. 14: 81. 1856. 
Vicinity of the Manatee river, Florida. 
: As late as the year 1894 there. seems to have hain only one 
_ collection of the above species ; this was Rugel’s 429, on which 
