Not rare.

Order 93.-- SAURURACEE. (Lizard's-Tail Family.)

Saururus, L. (Lizard's-tail.)

S. cernuus, L. Edges of sluggish streams and pools.

Ceratophyllum, L.

C. demersum, L.

Order 97-- EUPHORBIAS. (Spurge Family.)

Euphorbia, L. (Spurge.)

E. polygonifolia, L. Shores of the Sound. E. maeulata, 'L. Road-sides, common.

E. hypericifolia, L. A weed. Fields and gardens. E. Cyparissias, L. About dwellings. (Adv. Eu.)

Acalypba, I.. (Three-seeded Mercury.)

A. Virginica, L. A weed in gardens and waste places about dwellings.

Order 99. URTICACEiE. (Nettle Family.)

Ulmus, L. (Elm.)

U. fulva, Mx. (Slippery Elm.) This tree is well-known, the inner bark is charged with mucilage, and is used largely for poultices, and as a remedy in throat diseases ; from 30 to 40 feet high.

U. Americana, L. (American Elm.) A large tree reaching the height of 80 to 0,0 feet. On account of the graceful forking of its branches, it is highly valued for ornamental purposes ; when planted in rows along avenues, the forked branches interlace, forming pointed arches.

TJ. racemosa, Thomas. (White Elm. Corky Elm.) A large tree, not so desirable as the last for a shade or ornamental tree, on account of the roughness of its branchlets which arc flanked by corky wings.

Celtis, Tourn. (Nettle-tree. Hackberry.)

C. occidentalis, L. (Hackberry.) River banks.

OF WESTCHESTER COUNTY.

Morus, Tourn. (Mulberry.)

M. rubra, L. (Red Mulberry.) Fields and hedge-rows, a small tree from 20 to 30 feet high, bearing edible fruit ; the timber is hard and durable, the roots are much used for the knees of rowboats and skiffs.