1892. } NEW YORK ACADEMY OF SCIENCES. 83 
36. Scirpus lineatus, Michx. 
Scirpus lineatus, Michx., Fl. Bor. Am., i, 32 (1803). 
Trichophorum lineatum, Pers., Syn., i, 69 (1805). 
Scirpus pendulus, Muhl., Gram., 44 (1817). 
Isolepis lineata, R. and S., Syst., ii, 117 (1817). 
Scirpus brizoides, Willd. ex Link, Jahrb., iii, 89 (1820). 
Eriophorum lineatum, Benth. and Hook., Gen. Pl., iii, 1052 (1883). 
Scirpus Drummondii, Steud., Cyp., 318 (1855). 
In swamps. Southern Ontario to Georgia, west to Minnesota, 
Kansas, and Texas, Also in Oregon: Waldo and Grant’s Pass 
(T. Howell). 
RYNCHOSPORA, Vabl, Enum., ii, 229 (1806). 
Dr. Gray’s revision of the North American species of Ryncho- 
spora and Ceratoschenus, published in Ann. N. Y. Lye. Nat. Hist., 
iii, 363-372, included in Dr. Torrey’s Monograph of the N. A. 
Cyperacee, supplementary to his monograph printed in earlier pages 
of the same volume, recognized 29 species. Drs. Torrey and Gray 
always regarded the genus Psilocarya as valid, and 3 species were 
recognized in the monograph above mentioned, making in all 32 
species of the three genera. In the following enumeration all are 
regarded as belonging to Rynchospora, in this following the views 
of Mr. C. B. Clarke, who has favored me, in his usual kind manner, 
with an abstract of his arrangement of the North American species, 
on which the present paper is based. The relation of Dichromena, 
Michx., to the group is exceedingly close, and its species have been 
included in Rynchospora by O. Beckeler, but I follow Mr. Clarke 
in keeping it up. 
Of the 60 species here recognized 16 are Mexican, West Indian, 
and South American, only so far as is now known, there being thus 
44 species in the United States and Canada. 
I have followed Vahl’s original spelling of the generic name, 
which has by subsequent authors usually been written Rhyncho- 
spora. 
I. Subgenus HAPLOSTYLIS, Benth. 
Style entire or only shortly bifid, never cleft to the middle. 
* Culm monocephalous. 
1. Rynchospora Mexicana (Liebm.). 
Haplostylis Mexicana, Liebm., Mex. Halvg., 61 (1849). 
Rynchospora Mexicana, Steud., Cyp., 144 (1855). 
Oaxaca, Mex. (Liebmann); near Guadalahaja, Mex. (Pringle, 
2628). 
2. Rynchospora globosa, R. and §. 
Rynchospora globosa, R. and §., Syst., ii, 89 (1817). 
Mexico (Liebmann). © [ Cuba, Wright, 3403. ] 
