MONOECIA. TRIANDRIA. 71 



MONANDRIA. 



381. Zoster A. L. Grasswrack. 



marina. Vahl. On the sea shore, and in salt water 

 bays near New- York. 2/. 



382. Caulinia. Willd. 



flexilis. Willd. In slow flowing streams. 0. Sept. 



383. Chara. L. 



vulgaris. L. (Feather beds J In ponds, and slow flow- 

 ing streams. 0. July. 



DIANDRIA. 



384. Lemna. L. Duck's meat. 



1 minor. L. In ditches and stagnant waters, u . ? July 



—Aug. 



2 polyrhiza. L. In similar situations. Hoboken. "V. Aug. 



3 dimidiata. Raf. Amer. Mon. Mag. In ponds, in woods, 



near Brooklyn, v. v. 



TRIANDRIA. 



385. Ttpha. L. Cafs tail. Reed mace. 



1 latifolia. L. Marshes and pools, ir. June — July. 



2 angustifolia. L. In similar situations, if. June— July. 



386. Sparganium. L. Burr reed. 



1 ramosum. Sw. 

 erectum. L. 



In ditches and small streams. Tj. . Aug. — Sept. white. 



2 American urn. Nutt. 

 simplex. Muhl.-Ph. 



In similar situations. 11 . Aug. 



387. Trifsacum. L. Sesame grass. 



dactaloides. Y\ illd. 

 inonostachyon. Willd. 

 On the brow of the serpentine hill at Hoboken. U . Aug. 



388. Carex. L. Sedge. 



1 sterilis. Willd. In wet meadows, y . May. 



2 polytrichioides. Willd. 

 microstachya. Mx. 



Low wet places u> May. 



3 bromoides. Schk. In boggy meadows, u. Ma\ 



4 squarrosa. L. 

 typhi na. Mx. 



In low boggy meadows. Greenwich, it . June. 



5 pedunculata. Willd. Moist shady grounds. l[. June- 



July. 



6 lagopodioides. Willd, In boggy meadows. %. June. 



