412 SALICACEAE 
long: e numerous: eapsule ovoid, 8-10 mm. eda i pid a ] 
—(NECKLACE-POPLAR. AROLINA-POPLAR. RIVER-POPLAR. COT Vim 
Moist soil poss along streams, various provinces, Fla. to La., Man. and 1 Gus 
6. P. heterophylla L. ap becoming 30 m. tall the bark eps leaf-blades 
broadly ovate, 8-15 em. long, or longer, obtuse or acutish, nate or serrate- 
crenate: pistillate E short t, the flowers Jong: pedicelled; teas a 
9-12 mm. long.— MP-COTTONWOOD. BLACK Downy LAR.) 
—Swamps and river- EPIS various. provinees, pee b am N Fla. 
to La., Ark., Ind., and Conn 
7. P. candicans Ait. Tree E pn x Ae pou bark uis leaf-blades 
broadly ovate or orbieular-ovate, ong, a inate, crenate: pistillate 
aments M Sah the flowers E reps Ge. ovoid, 8-11 mm. lon 
(BALM-OF-GILEAD.)—Roadsides, fields, and cult. ae nds, various EON eS: es, 
N. C. to o N Dak., Alas., Ont., and Newf. Nat. f Eurasia, and perhaps also 
of NN 
2. SALIX [Tourn.] L. Shrubs or trees, the buds with a single scale. 
Leaf- orina pinnately veined, relatively short- -petioled. Stamens 2, or rarely 
1- 
ns; few i 
the south temperate zone.—' The wood is used to make fine grades of charcoal, 
the bark yields tannic acid and the branchlets are used in making baskets. 
Some species are used in ornamental hortieulture.—Wint.-Spr.— WILLOWS. 
OsIERS. WITHYS 
Aments borne on lateral leafy branchlets, their scales of one color, usually yellowish, 
deciduous: filaments distinct, pubescent below. 
Stamens 3—7. I. NIGRAE. 
Stations 2. 
Tess plages closely serrate, long-acuminate. II. ALBAE 
eaf-blades entire or remotely denticulate or dentate. III. ORCI OHNE 
Aments borne EUR or terminal, their bracts discolored, col- 
t the tips, D ene aments distinct and glab- 
E US iere in S. purpur 
Filaments glabrous, distinct. 
Capsule glabrous. IV. CoRDATAE. 
Capsule pubescent. 
af-blades serrate. V. SERICEAE. 
af-bladés undulate, crenate, or undulate-crenate. VI. DISCOLORES. 
Filaments pubescent, uni ited. VII. PURPUREAE. 
I. NI 
Leaf-blades green on both sides, sometimes paler beneath. 
apsule conic or ovoid-conic, the lower part more or less swollen, the base not 
"DEG adly rounded: pedicels less than one-half as long as 
the capsules. 1. S. nigra. 
Capsule ovoid, the lower part conspicuously turgid, the bas 
Pn A rounded: pedicels one-half as long as the capa ies 
2. S. marginata. 
Leaf-blades. “glaucous or silvery-white pubescent beneath. 
apsule conic, the valves veiny: fruiting aments short. 9. S. amphibia. 
Capsule ovoid, the valves not veiny: fruiting aments elon- 
4. S. longipes. 
I A 
Capsule distinctly pedicelled, conic-subulate or conic. 5. S. fragilis. 
Capsule ae ee or nearly so, ovoid or conic-ovoid. 
Capsule 4—5 mm. long: pistillate aments 4 cm. long or more. 6. S. alba. 
Capsule 2-3 mm. long: pistillate aments 3 cm. lone or less. 1. S. babylonica. 
LONGIFOLIA 
` III. AE 
Leaf-blades of a narrowly linear type: capsule with a broad 
base abruptly narrowed into the beak. 8. S. interior. 
