504 CXXVII. SALICACE^. Salix. 



18. S. LUciDA. Muhl. 



1/1-5. ovate-lanceolate, long-pointed, rounded at base, smooth and shining ; 

 slip, oblong, serrate ; aments triandrous ; scales lanceolate, obtuse, serrate and 

 smooth at the tip, hairy at the base ; ovaries lanceolate-subulate, smooth ; style 

 bifid; stigmas obtuse. — A small and beautiful tree, common in N. Eng., Middle 

 States, Mich, and British Am. Trunk 12 — 15f high, 3 — 4' diam. Branches 

 smooth, dark, shining green. Leaves broad and glossy, dark green above, 

 tapering to a long point. May. 



19. S. NIGRA. Marshall. Black Willmj). 



Lvs. lanceolate, acute at each end, serrulate, smooth and green on both 

 sides, petiole and midvein above tomentose ; slip, dentate ; ainents erect, cylin- 

 dric, villous ; scales oblong, very villous ; fd. 3 — 6 (generally 5), bearded at base ; 

 ova. pedicellate, ovoid, smooth ; sly. very short; stig. bifid. — A small tree, on the 

 banks of rivers, chiefly in N. Y. and Penn. Branches verj^ brittle at base, pale 

 yellow. The trunk has a blackish bark. Sterile aments 3' long. May. 



20. S. PuRSHiANA. Spreng. (S. falcata. Hook.) Pvrsh's Willow. 



Lvs. very long, lance-linear, often falcate, gradually attenuate to the apex, 

 acute at base, finely dentate-serrate, smooth on both sides, silky pubescent when 

 young; slip, somewhat lunate or obliquely reniform-cordate, dentate, reflexed ; 

 ova. glabrous, pedicellate ; sty. short. — Readily recognized by its ver}^ long, fal- 

 cate leaves and the broad persistent stipules. Grows in swamps and margins 

 of ponds. Middle States, N. Eng., Western States, Can. It is a shrub orsmall 

 tree, with a slender trunk sometimes 30 or 40f high. Leaves green both sides, 

 6 — 8' long. Aments 2' long. 



§ 6. Albeje. Borrer. Trees of the largest size, with lanceolate, serrate leaves, the 

 serratures glandular, lower surface clothed uith long, oppressed, silky hairs, often 

 the upper also, giving to the foliage a whitish or bluish hue. Aments lax. Stamens 

 2. Ovaries glabrous. 



21. S. ALBA. White Willow. 



Lvs. elliptic-lanceolate, regularly glandular-serrate, silky beneath, often 

 above, acute at apex ; ova. ovoid, acuminate, glabrous, subsessile ; stig. short, 

 recurved, deeply cleft ; sta. 2, v^ith hairy filaments ; scales short, pubescent at the 

 margin. — A large tree of rapid growth, native of Europe, introduced in Mass. 

 (Emerson) and probably in other states. 



0. carulea. {Blue WilUnc.) Lvs. of a bluish hue, less silky beneath. — A tree 

 of rapid growth, completely naturalized in Mass. Emerson 



22. S. viTELLiNA. Yellow Wilhw. Golden Osier. 



Lvs. lanceolate, acuminate, with thickened serratures, smooth above, paler 

 and somewhat silky beneath ; slip. ; aments cylindric ; scales ovate-lanceolate, 

 pubescent outside ; ova. sessile, ovate-lanceolate, smooth ; stig. subsessile, 2-lobed. 

 — This willow was probably introduced, but is now very common by roadsides, 

 &c. It is a tree of moderate height, with shining yellow branches. May. 



23. S. Babylonica. Babylonian or Weeping- Willow. 



Branches pendulous ; lvs. lanceolate, acuminate, smooth, glaucous beneath , 

 slip, roundish, oblique, acuminate ; ova. sessile, ovate, smooth. — This elegant 

 species has been introduced fro7Ti the East, and cultivated until nearly natural- 

 ized. The long, slender, drooping branchlets very naturally indicate the Eng- 

 lish name of the tree, and give it a place in the church-yard to " weep" over the 

 remains of the departed. The Latin name was happily suggested to Linnaeus 

 by the 137th Psalm: 



" By the rivers of Babylon there we sat down : 



Yea, we wept, when we remembered Zion. 



We hanged our harps upon the willoics in the midst thereof." 



§ 7. FuLv.E. Borrer. 



24. S. ROSTRATA. P».ichardson. Beaked Willoiv. 



Branches erect, straight, pubescent, at length smooth ; lvs. broadly or obo- 

 vate-lanceolate, acute, subentire, at length coriaceous, smooth above, glaucous- 

 pubescent beneath ; slip, semicordate, dentate ; aments short, cylindric, dense, the 

 fertile ones becoming very long and loose ; scales oblong, membranous, hairy at 



