<302 CXXVI1. SALICACE^E. SAMX 



leaves, centrifugal. Scales turning black. Stamens 2, free or united. Ova. stipi- 

 tate, subpubesccnt. Barratt. 



4. S. DISCOLOR. Muhl. Two-colored or Bog Willow. 



Lvs. oblong, rather acute, glabrous above, entire at the end, glaucous 

 beneath ; slip, lanceolate, serrate, deciduous ; aments cotemporary with the 

 leaves, oblong, downy, diandrous ; scales oblong, acute, black, hairy ; ova. ses- 

 sile, downy ; stig. 2-parted. A shrub, 8 lOf high, in swampy grounds, Can. to 

 Car., with tough brown twigs, and white, glossy catkins. Leaves 13' long, 

 finely serrate except at the end. Sterile aments about f long, fertile 1'. Fila- 

 ments white, anthers at length yellow. April. 

 P. Monadelphia. Barratt. Tree 10 15f high. Filaments 34, half-united. 



5. ERIOCEPHALA. Michx. Woolly-lieaded Swamp Willow. 



Branchlets very pubescent, brown or purplish ; Ivs. lanceolate-elliptic or 

 oblong, cuneate at base, entire or remotely serrulate above, under surface glau- 

 cous or ferruginous, both surfaces pubescent when young, at length the upper 

 surface green and nearly smooth; slip, semicordate, with sharp serratures; 

 aments oval-oblong, densely villous. A small tree, putting forth its large and 

 exceedingly woolly catkins in April. Grows in swamps, N. Eng. 



6. S. FRiNolDES. Ph. Prinos-leaved Willow. 



Branchlets puberulent when young, at length glabrous and dark brown ; 

 Ivs. oval-oblong or lance-oblong, glabrous, glaucous beneath, cuneate at base, 

 remotely serrulate, acute or abruptly acuminate; slip, semicordate, incisely 

 serrate ; aments preceding the leaves, hairy ; t#. ovoid, acuminate, silky ; sty. 

 long; stig. bifid. Shrub 6 8f high, N. Eng. to Penn., W. to Mich. Calkins 

 appearing in April, 1 2' long, Ovaries distinctly stipitate, tapering at apex 

 into the long, exserted style. 



7. S..CRASSA. Barratt. Dense-Jlowered Early Willow. 



Lvs. elliptic-lanceolate, rather remotely serrate, entire towards the base, 

 glabrous and dull green above, veiny and clothed with short, ferruginous hairs 

 beneath, adult subcoriaceous ; stip. small, lanceolate, serrate or often wanting ; 

 tf aments ovate, sessile, densely clothed with yellowish-white, silky hairs ; scales 

 obovate. A hairy and beautiful willow, rare in N. Eng. Tree about 15f high, 

 with rough, ash-colored bark. Branches irregular and knotty, with thick, 

 densely flowered twigs in April. Leaves 3' by 1'. tf catkins 1 2' long. 



8. S. SENSITIVA. Barratt. Frost or Tender WiUouo. 



Lvs. ovate-lanceolate, acuminate, cuneate and entire at base, finely serrate 

 at the apex, and more distantly and strongly serrate towards the base, glabrous 

 and rather thin ; stip. subfalcate, serrate ; $ aments rather lax ; scales rather lax, 

 lightly clothed with grayish-black hairs. A small tree, about 15f high, found 

 in various parts of N. Eng., &c. The aments and twigs are frequently destroy- 

 ed by irost at flowering-time, being thinly protected with hairs. Leaves smooth, 

 3 5' by 1J 2'. Aments 1J' long. Apr. This and the three next preceding 

 species are very closely allied, as suggested by-Mr. Emerson, Rep., p. 262, and 

 it is possible that they may hereafter be united under one species. 

 $ 3. GRISEJE. Borrer. Shrubs with, branches brittle at base, and an intensely bitter 



bark. Leaves lanceolate, serrate, grayish-silky beneath, turning black in drying. 



Aments cylindrical, rather short, preceding the leaves, with 2 or 3 minute leaves at 



base. Stamens 2, beginning to appear from the middle of the ament. Ovaries 



grayish-silky. Barratt. 



9. S. GRISEA.. Gray Willow. 



Lvs. lanceolate, serrulate, acuminate, smooth above, silky beneath ; stip. 

 ovate- oblong, denticulate, deflected, deciduous; scales oblong, hairy, black at 

 the tip ; ova. oblong, pedicellate, silky ; stig. sessile, obtuse. A shrub 6 8f 

 high, in inundated meadows. Branches purplish, long and slender, very tough, 

 except at the base, where they are very brittle. Leaves 2 4' by i 1' 9 aments 

 very abundant, \' long. Apr. 



10. S. PETIOLARIS. Smith. Long-stalked Green Osier. 



Lvs. lanceolate, serrate, smooth, glaucous beneath, silky at base, mostly 

 unequal, stipules lunate, dentate ; aments appearing before the leaves; scales lax, 

 obovate, obtuse, hairy, black ; ova. on long pedicels, ovate, silky ; stig. sessile, 



