SALICACEAE 413 
IV. CORDATA 
Capsule mostly less cd T mm. long: twigs icone more or 
less grayish- sis . S. cordata. 
Capsule mostly over unm. long: twigs purple. 10. S. Chapman. 
CEAE 
Leaf-blades glabrous in maturity: capsule 5—8 mm. long. 11. S. petiolaris. 
Leaf-blades persistently sericeous: capsule 3—4 mm. long. 12. S. sericea. 
VI. Dis ES 
Leaf-blades glabrous, at least at maturity purses -petioled. 13. S. discolor. 
Leaf-blades persistently pubescent, at least beneath, distinctly 
petioled, or very short- -petiole d. 
Mature pistillate aments 2—4 cm. long: capsule 7—9 mm 
14. S. humilis. 
Mature pistillate aments 1—1.5 em. long: capsule 5—6 mm. 
ong. 
15. S. tristis. 
VII. PURPUREAE 
Filaments pubescent, united. 16. S. purpurea. 
S. nigra Marsh. Shrub or small tree, the twigs brown: leaf-blades nar- 
rowly lanceolate to linear-lanceolate, 6— 12 em . long, acute at both ends, or 
maturity, closely serrate: bracts of ay 
staminate aments obtuse: ca psules 3-5 m 
long, somewhat swollen below, but em 
iio epee rounded at the base.— (BLACK 
SWAMP-WILLOW. )—Low gro unds, 
swamps, and river-banks, various provinces, 
Fla. to Tex., N. D., and N. B. 
. S. marginata Wimm. hrub or small 
tree, the twigs reddish: leaf-blades ovate, 
i m. | 
gs 
elliptie, or laneeolate, 2-5 e g, obtuse, 
acute, or slightly acuminate, green on bot 
sides slightly paler eath, 
-— (GULF ee —River- 
and swamps, rey Plain, Fla. to La.—Specimens commonly referred to this 
and the precedin ae with fragile branchlets, have been described as 
S. Harbisonii C. Sehne ider 
3. S. amphibia Small. Shrub or small tree, the twigs purple or purplish: 
leaf- blades linear- — olate, ee or elliptic 3-13 em. long, acute 
acuminate, glabrous or pubes when young, glaucous beneath, finely ser- 
rate: bracts of the staminate ae usually acute or acutish: capsule conie, 
6-8 mm. long, long-beaked.—Borders of lakes, swamps, and hammocks, pen. Fla 
S. longipes Anders. Shrub or small tree, the twigs gray or gray-brown: 
leaf-blades era, de ape A Or pipi Kis or rarely some- 
what broadened upward, 7—15 long, acute inate, finely serrate, 
glaueous and vein an often finely pubescent d stout -petioled: o 
aa ae any capsule ovoid, 4-6 mm. long, short-bea ked. [S. floridana 
m.]—Rocky and gravelly shores and stream- -beds, Coastal Plain and adj. 
seer Fine o Tex. Mo., and Md. 
. fragilis L. Tree becoming 25 m. tall, the twigs pide leaf-blades 
green, or xm beneath, lanceolate to elliptic- o 8-15 cm. long, E 
capsule conic- -subulate or conic, 4.5-5 mm. long.—(CRACK- Ba Bri 
