Water in flooded places.

Var. spongiosa, Gray. Along brooks with the last. S, heterophylla, Pursh. Peekskill. (Le Roy.) S. pusilla, Nutt. Peekskill. (Le Roy.)

Order 112-- HYDROCHARIDACES. (Frog's-bitt Family.)

Anacharis, Richard. (Water-weed.)

A. Canadensis, Planchon. Slow streams.

Vallisneria, Micheli. (Eel-grass.)

V. spiralis, L. Slow waters. Along the coast.

Order 114.-- OECHIDACES. (Orchis Family.)

Orchis, L. (Orchis.)

O. spectabilis, L. Shady woods.

OF WESTCHESTER COUNTY. 8l

Habenaria, Willd,, R. Br. (Rein-Orchis.)

H. tridentata, Hook. (Leggett.)

H. virescens, Spreng. Peekskill.

H. viridis, R. I!r. (Lcggctt.)

H. Ilookeri, Torr. Borders of woods.

H. orbiculata, Torr. Pine and Hemlock woods.

H. ciliaris, R. Br. Wet places ; not common.

H. lacera, R. Br. Damp thickets.

H. psycodes, Gray. Wet grounds.

Goodyera, R. Br. (Rattlesnake-Plantain.) G. pubescens, R. Br. Shady woods.

Spiranthes, Richard. (Ladies' Tresses.) S. latifolia Torr. White Plains. S. cernua, Richard. Damp roadsides. S. graminea, Lindl. (Bicknell.)

Var. Walteri, Gray. North of Kings Bridge, (Bicknell.) S. gracilis, Bigelow. White Plains. S. simplex, Gray. Woodlawn Cemetery. (Bicknell.)

Listera, R. Br. (Twayblade.)

Ii. convallarioides, Hook. Damp woods.

Arethusa, Gronov. (Arethusa.) A. bulbosa, L. Bogs.

Pogonia, Juss.

P. ophioglossoides, Nutt. White Plains P. verticilata, R. Br. White Plains.

Calopogon, R. Br.

C. pulchellus, R. Br.. Bogs.

Liparis, Richard.

Li. liliifolia, Richard. Bogs. L. I.<c>elii. Richard. (Leggett.)

Corallorhiza, Haller. (Coral-root.) C. multiflora, Nutt- Woods.

Aplectrum, Nutt. (Adam and Ere.) A. hyemale, Nutt. Rich wood.

Cypripedium, L. (Moccason-Flower.) C. parviflorum, Salisb. Damp woods. C. pubescens, Willd. Boggy places. C. spectabile, Swartz. Bogs. C. acaule, Ait. Dry woods.

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