SALICACMAE. \\§ 



2. Populus HETerophylla L. Downy Poplar. M. p. 308. Swamps. Early 



spring. 

 Delaware— (P.). Chester— (P.). 

 Cwm&.eW«?id— Fortescue Beach (C). 



iVew Castie— Hookessin, Tatnall; Townsend, Canby; Stanton, Canity; 

 Harvey, Tatnall; Tatems. Rare. 



3. Populus candicans Ait. Balm-of-Gilead. M. p. 309. Escaped from 



cultivation. Early spring. 



4. Populus nigra L. Black Poplar. M. p. 309. Valleys of rivers. Early 



spring. 

 Salem — Banks of Delaware (C). 



5. Populus deltoides Marsh. Cottonwood, Necklace Poplar. M. p. 309. 



Moist soil, especially borders of streams. Early spring. 



6. Populus grandidentata Michx. Large-toothed Aspen. M. p. 310. Rich 



woods. Early spring. 



Philadelphia— Haddington (Te.), Wissahiekon (VP.). Bucks— Sellers- 

 ville (Fr.),, Rock Hill (Mac). Montgomery— Edge Hill (VP.). Dela- 

 ware — Marple, Dr. Geo. Smith (Fu.). Chester — Valley Forge (Cr.), 

 Westtown (W. Tr.). Lancaster— (P.). Berks— Hamburg (Ke.). Lehigh 

 — Coplay (Kr.), Northampton— (P.). 



Burlington — Moorestown (C). Camden — Atco (C). Gloucester — 

 Mickleton (He.), Swedesboro (Li.). Monmouth— Holmdel (C). 



New Castle— Grant 's, Tatnall; J. Mason's, Milltown. 



7. Populus tremuloides Michx. American Aspen. M. p. 310. Dry or 



moist soil. Early spring. 



Philadelphia — (P.),. Bucks — Near Sellersville (Fr.), Mechanicsville 

 (Ws.). Montgomery — Shannonville (Cr.). Delaware— Valley of Darby 

 Creek (B. Sm.), Concord (W. Tr.). Chester— Valley Forge (Cr.). I<ehigh 

 Coplay ( Kr. ).. Northampton — ( P. ) . 



New Jersey— Common (C). 



New Castle— Late H. Grant's, Greenbank, Commons. 



2. SALIX L. Willow, Osier. 



Capsule glabrous, or slightly silky when young in No. 8. 



Trees or larger shrubs with serrate, acute or acuminate leaves. 



Stamens 3-7; filaments hairy at the base; bracts caducous, light 

 yellow. 

 Pedicels slender, 3-5 times as long as the gland. 



Petioles and stipules without glands. 1. S. nigra. 

 Petioles and stipules with prominent glands. 



2. S. lucida. 

 Pedicels about twice as long as the gland. 3. S. fragilis. 



Stamens 2. 



Filaments hairy at the base; bracts caducous yellow. 

 Pedicels in fruit 1-3 mm. long. 



Stigma sessile; leaves linear or lance-linear. 



8. S. puviatilis. 

 Style evident, but short; leaves lanceolate. 



3. S. fragilis. 

 Pedicels in fruit less than 1 mm. long; stigma sessile. 



Branches not drooping; leaves lanceolate. 



4. 8. alba. 



