55 
TRIANDRXA M ONOGYNI A, ScirpUS. 
S. compressus. Moench.meth.3g4 . 
Icon, Moris . hist 3. s. 8. t. 10./. 34. Host. gram. 3. 
t. 56. 
Near ponds and ditches : Pensylvania. %. July. v. v. 
f. S. spica subglobosa, culmis sulcato-angulatis setaceis, capitatus . 
vaginis muticis, spica subglobosa, Vahl. enum. pl. 2. 
p. 250. Willd. sp . pl. 1 p. 294. 
Icon. Rottb. gram. i. 15. f. 3. 
In small ponds, very common. 1/. Aug. v. v . 
8. S. spica ovato-oblonga, squamis ovato-subrotundis, cui- geniculatus , 
mis teretibus approximate interstinctis. Vahl. enum. 
pl. 2. p. 250. sp. pl. 1. p. 291. 
Icon. Sloan. hist. 1 . t.83.f.3, 
On the sea-shore of Virginia and Carolina. July. 
v. v. 
g. S. spica cylindrica, squamis oblongo-subrotundis, cui- quadrangula - 
mis tetragonis. Vahl. enum. pl. 2. p. 252. Mich.Jl. tus. 
amer. 1 . p. 30. 
In Carolina. Michaux. 2f.+. 
** Culmo polystachyo : spicis lateralibus. 
10. S. spicis ovatis acutis subsolitariis, culmis foliisque capil- minimus . 
laribus curvatis. Vahl. enum. pl. 2. p. 253. 
Icon. Pluk. aim. t. 300. ft 5. Rottb. gram, t . 15./. 4. 
S. setaceus. 
In wet sandy fields and near ponds : Virginia to Carolina. 
]/.July. v. v. 
11. S. spicis brevi-ovatis conglomerato-sessilibus, squamis debilis. 
subrotundis membranaceis, culmis striatis. 
In wet meadows : Pensylvania. 1/. July, Aug. v. v. 
Culmi teretes, striati, pedales et ultra. Spiculce 4 — 6. 
crassae. Squamis latis, acutiusculis. Setulce semine 
duplo longiores. Affinis S. setaceo . 
12. S. aphyllus, spicis oblongis, squamis integerrimis mu- mucronatus. 
cronato-acuminatis, culmo triquetro. Vahl. enum . 
pl. 2. p. 256. Willd. sp. pl. 1. p. 303. 
Icon. Host. gram. 3. t. 66. 
In swamps and salt-marshes : Canada to Carolina, 1/ . 
Aug. v. v. 
*** Culmo polystachyo : spicis terminalibus. 
13. S. aphyllus, spicis oblongis, squamis glabris mucrorm» 
lacustris. 
