Large tree, wet grounds, and river-banks. (Adv. Eu.) S. alba. L.

Var. vitellina, Gray. (Yellow Willow.) A large tree, along streams and

river-banks. (Adv. Eu.)

Populus, Tourn. (Poplar, Aspen.)

P. tremuloides, Mx. (Aspan Leaf.) Large tree.

P. grandidentata, Mx. Large tree, taller than the last.

P. bnlsamifera, L. Balsam, Poplar. (Tacamahac.) Var. candicans, Gray. (Balm of Gilead.) Large tree.

P. alba. L. (Abele Tree.) Shade tree, introduced from France, by nurserymen, sometimes called silver leaved poplar.

Note. -- The whole genus suckers profusely, and is on that account objectionable for lawn purposes.

Order 106.-- CONIFEBJE. (Pine Family.)

Pinus, Tourn. (Pine.)

P. rigida, Miller. (Pitch Pine.) Large tree, timber hard and filled with

resin.

P. inops, Ait. (Scrub Pine.) Small tree, wood hard but not large enough for valuable timber. Sing Sing, Dr. Fisher. (Must have been planted.') P. mitis, Mx. (Yelow Pine.) Large tree, good timber.

P. Strobus, L. (White Pine.) Largest of the Genus, growing to the height of 150 feet, makes excellent boards and planks.

Abies, Tourn. (Spruce Fir.)

A. nigra, Poir. (Black Spruce.) Large tree furnishing excellent timber. North Salem. (Dr. Mead.)

A. Canadensis, Mx. (Hemlock.) Large tree, used for ornamental and Hedging purposes. Largely used for lumber.

OF WESTCHESTER COUNTY.

Larix, Tourn. (Larch.)

L. Americana, Mx. (Larch, Black Larch, Hackmatack, Tamarack.) A large tree, used for ornamental purposes, and for lumber.

Thuja, Tourn. (Arbor Vita?.)

T. occidental is, L. (American Arbor Vitse.) This tree is also called Cedar, in the north where it is used in the manufacture of barrels. It is a favorite ornamental tree ; largely used in hedges.