Z. aquatica, L. Borders of sluggish streams.

Phleum, L. (Timothy.)

P. pratense, L. Pastures and mowing grounds. (Nat. Eu.)

Vilfa, Adans. (Rush Grass.) V. aspera, Beau v.

V. vaginaeflora, Torr. Old sandy fields,

Sporobolus, R. Br. (Drop-seed Grass.) S. serotinus, Gray. Wet sandy land.

Agrostis, L. (Bent-Grass.)

A. scabra, Willd. Dry places.

A. vulgaris, With. (Red-top.) Grown for hay and pasture in damp lands. A. alba, L. (White Bent-grass.) Used for hay as the above.

Cinna, L. (Wood Reed-grass.) C. arundinacea, L.

V ar. pendula, Gray. Shady woods.

OF WESTCHESTER COUNTY.

Muhlenbergia, Schreber. (Drop-seed Grass.) M. glomerata, Trin. Boggy places. M. Mexicana, Trin. Damp undrained grounds. M. sylvatica, Torr. & Gray. Wet woods. M. Willdenovii, Trin. Shady rocks. M. diffusa, Schreber. Dry woods.

Brachyelytrum, Beauv.

B. aristatum, Beauv.

Calamagrostis, Adans. (Reed Bent-grass.'

C. Canadensis, Beauv. Damp lands. C. arenaria, Toth. Coast of the Sound.

Stipa, L. (Feather-grass.)

S. avenacea, L. (Oat-grass.) Sandy woods.

Aristida, L. (Triple-awned Grass.)

A. dichotoma, Mx. (Poverty Grass.) Barren fields. A. gracilis, Ell. Near the coast of the Sound.

Spartina, Schreber. (Marsh Grass.) S. polystachya, Muhl. (Leggett.) S. juncea, Willd. Beach of the Sound. S. stricta, Roth.

Var. glabra, Gray. Along the Sound.

Var. alterniflora. Shore of the Sound.

Cynodori, Richard. (Scutch-grass.)

C. Dactylon, Pens. (Nat. Eu.)

Eleusine, Gsertn. (Yard-Grass.) E. Indica, G«rtn. Door-yards.

Dactylis, L. (Orchard-Grass.)

D. glomerata, L. Grown for hay. (Nat. EuJ

Kceleria, Pers.

K. cristata, Pers. Dry upland

Eatonia, Raf.

E. Pennsylvanica, Gray. Damp woods and meadows.

Glyceria, R. Br., Trin. (Manna-Grass.) G. Canadensis, Trin. Wet grounds. G. obtusa, Trin. Swampy places. G. nervata, Trin. Damp grounds. G. aquatica. Smith. Wet grounds. G. fluitans, R. Br. Flooded grounds. G. distans, Wahl. (Leggett.)