332 SALICACE.E. 



species is a native of the Ea*t. and has boon cultivated until nearly naturalize. 

 The long slender drooping hranchlets very naturally indi<-at.< the common name of 

 the tree. Only the fertile plant is known in the United States. 

 •*** Ovary stalled*, hairy ; stamens 2. 



15. S. lonoifolta, Mulil. Long-leaved Willow. 



Leaves linear-laneeolate. rerjlong, tapering at each «nd. neax 

 ly denticulate with projecting teeth, clothed with array hairs when young, at length 

 nearly smooth ; stipules small, lanceolate, toothed : saks hairy at the base, often 

 glandular-toothed at the top in the sterile aments; stigma very lonjr, sessile. 



River hank?. A variable rooting species 2 to 12 feet high, with brown branches 

 and white hranchlets, often prostrate. 



2. FOPULUS, Tourn. Poplar. Aspen. 



Lat. »op?<7w£, the people, being often planted by the public w&ya. 



Dioecious. Aments cylindric. Practs (scales) of the 

 amenta irregularly cut4obed at flic apex. Flowers from a 

 cup-shaped disk, which is obliquely lengthened in front. 

 Stamens 8 to 30, with distinct filaments. Stigmas 4, 

 elongated. Capsule superior, 2-celled, 2-valved, many- 

 seeded. Seeds comose. — Trees, with soft wood % usually broad 

 and more or less heart-shaped or ovate toothed leaves on lor"-.' 

 petioles, and long drooping aments, appearing be/ore the leaves. 



1. P. TREMULOIDES, Michx. American Aspen. 



Leaves roundish-heart-shaped, with a sharp short point, dentate-serrate, pmcoth 

 on both sides, with downy margins ; scales cut into 3 to 4 de?p linear divieione, 

 fringed with, lone hairs. 



Woods and open ficld=, common. April. A tree CO to 50 feet high, wPh smooth 

 greenish-white hark. I. ives 2 to 2\£ -inches 1 I ■_' to S 



Inches Ions, which arelaterally com -res-- ed. so that they arc- thrown into a cont: 

 agitation by the slightest breeze. H kite Poplar. 



2. P. GRANDIDENTATA, Michx. Large-toothed Aspen. 



Leaves roundish-ovate, with large and irregular sinuate teeth, white-silky-woolly 

 when young, at length smooth on both sides; scales cut into 5 to 6 unequal email 

 divisions, slightly fringed- 



Woods and <rroves. rather common. A tree 40 to TO feet high, with a diameter 

 of 1 foot, straight, covered with a smooth, greenish bark. Leaves 3 to 5 inches lent 

 and nearly as wide, generally at the extremities cf the distant, coarse and crocked 

 branches. 



3. P. FIETEOPHTLLA, L. Various-leaved Poplar. 



Leaves roundish-ovate or heart-shaped, obtuse, serrate, white-woolly when y; 

 at length nearly smooth, oxcept on the veins beneath. 



gwnmpp. May. A tree 40 to 00 feet hi:h. with round branches. Leave* large, 

 •asually quite blunt., the auricled lobes at the base cften conceal the insertion of 

 the petiole* 



4. P. ANGULATA, AHt. Water Poplar. Cotton- Wood. 



Leaves broadly-deltoid, or heart-ovate, smooth, crenate-seiTate or cut-serraU, 

 acuminate. 

 Bants of streams. Mar-ih, ApriL A. tree of large dunenjrfons 40 to SO feet high, 



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