84 TRANSACTIONS OF THE [ FEB. 22, 
* * Culm normally polycephalous. 
3. Rynchospora cyperoides (Sw.). 
Schenus cyperoides, Sw. Prodr. Fl. Ind. Occ., 19 (1788). 
Rynchospora cyperoides, Mart., Denksch. Akad. Wiss. Munch., 1816-1817, 149. 
Ephippiorhynchum polycephalum, Nees. 
Mexico (Liebmann). [Cuba, Wright, 3404; St. Domingo, Eg- 
gers, 1696. Porto Rico, Blauner, 253; South America. | 
4. Rynchospora Tracyi. 
Ceratoschenus capitatus, Chapm., Fl. 8. U. S., 529 (1860), not R. capitata, R. & 8. 
Florida (Chapman; Garber; Keeler; Curtiss, 3143); Ocean 
Springs, Miss., a monocephalous form (Tracy, No. 60). 
*** Inflorescence paniculate. 
5. Rynchospora corymbosa (L.). 
Scirpus corymbosus, L. Sp. Pl., 76 (1753). 
Rynchospora aurea, Vahl, Enum., ii, 229 (1806). 
Mexico; Nicaragua; Guatemala (Tuerckheim, 1257). [West 
Indies, South America, and in tropical regions of the Old World. ] 
6. Rynchospora corniculata (Lam.). 
Schenus corniculatus, Lam., Ill., i, 137 (1791). 
Scheenus longirostris, Michx., Fl. Bor. Amer., i, 35 (1803). 
Rynchospora longirostris, Ell., Sketch Bot. S. C. and Ga., i, 35 (1816). 
Rynchospora laxa, Vahl, Enum., ii, 231 (1806), not of R. Br. 
Rynchospora corniculata, A. Gray, Ann. Lyc. N. Y., iii, 205 (1835). 
Southern Pennsylvania and Ohio to Florida, west to Missouri 
and Louisiana and Texas. 
Var. macrostachya (Torr.). 
Ceratoschenus macrostachyus, Torr., Ann. Lyc. N. Y., iii, 369 (1836). 
Rynchospora macrostachya, Torr. in A. Gray, loc. cit., 206 (1835). 
Eastern Massachusetts and Rhode Island to Florida, west to 
Arkansas, the Indian Territory (Palmer, 357), and Texas (Hall, 
721). ; 
Var. patula (Chapm.). 
Ceratoscheenus macrostachyus, var. patulus, Chapm., Fl. S. States, 529 (1860). 
Florida. 
W. Boott, in Bot. Gaz., ix, 94, indicates that the characters of 
the bristles are not sufficient to separate these as species; this is 
also Mr. Clarke’s opinion. Northern specimens with long bristles 
have quite the habit of southern ones with short bristles. 
