502 CXXVII. SALICACE^. Salix 



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

 tate, subpubescent. Barratt. 



4. S. DISCOLOR. Mnhl. T\oo-colored or Bog WiUmo. 



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

 beneath ; stip. 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 1—3' long, 

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

 ments white, anthers at length yellow. April. 

 (i. Monadelphia. Barratt. Tree 10 — 151 high. Filaments 3 — 4, half-united. 



5. ERiocEPHALA. Michx. WooUy-hcaded Swamp Willow. 



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

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

 cous or ferruginous, both surfaces pubescent when j'oung, at length the upper 

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

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

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



6. S. PRiNoiDES. Ph. Prijios-lcaved Willotv. 



Branchlets puberulent when young, at length glabro* and dark brown ; 

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

 remotely serrulate, acute or abruptlj' acuminate; stip. semicordate, incisely 

 serrate; a/wrafe preceding the leaves, hairy; oia. ovoid, acuminate, silky; stij. 

 long ; siig. bifid.— Shrub 6— 8f high, N. Eng. to Penn., W. to Mich. Catkins 

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

 into the long, exserted style. 



7. S. CRASSA. Barratt. Dense-Jloicered Early Willotv. 



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; 

 (^ aments ovate, sessile, densely clothed with j'ellowish-white, silky hairs; scales 

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

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

 densely flowered twigs in April. Leaves 3i' by 1'. (^ catkins 1 — 2' long. 



8. S. SENsiTiVA. Barratt. Frost or Tender Wilhm. 



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 ; slip, subfalcate, serrate ; ^f 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 \\ — 2'. Aments IJ' 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 uitk branches brittle at base, and an intensely bitter 

 bark. Leaves lariceolate, serrate, grayish-silky beneath, tui~ning black in drying. 

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

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

 grayish-silky. Barratt. 



9. S. CRisEA. Gray WillmL'. 



Lvs. lanceolate, serrulate, acuminate, smooth above, silky beneath ; ■?tip. 

 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 § — V 9 aments 

 very abundant, i' 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, 



