826 



SALICACEAE (WILLOW FAMILY) 



aments ovoid-cylindric, at first 1-2 cm. long, in fruit broad and loose from the 

 lengthening of the pedicels, becoming 2-4 cm. long ; capsule rostrate from an 

 ovoid base, blunt. — Low shrub of damp soil, N. B. to the Great Lake region 

 and Man., s. to Tenn. Fig. 659. 



= = Mature leaves pubescent at least beneath. 



a. Aments sessile on the old wood., naked at base., appearing before the leaves, 



1. Leaves dull., grayish-toinentose, nndiilate-crenate or sub entire ; capsules slen- 



der-beaked. 



21. S. humilis Marsh. (Prairie W.) Leaves oblanceolate or oblong-lan- 

 ceolate, rarely obovate, 5-15 cm. long, above downy becoming glabrate, beneath 

 glaucous, rugose-veined and softly tomentose, the margin revo- 

 lute, undulate-entire ; stipules medium-sized., semi-ovate, entire 

 or of tener toothed ; petioles distinct ; aments ovoid or ellipsoid, 

 often recurved, 1.5-i cm. long. — Dry plains and barrens, Nfd. 

 to Minn, and N. C. — A shrub, 1-3 m. high, vary- 

 ing much in the size and shape of the leaves. 

 Fig. 660. 



Var, rigidiuscula Anders. Leaves narrowly 

 oblanceolate to lan^e-ublong, 0.5-1 dm. long, rigid, 

 strongly ascending, very rugose and glabrescent 

 beneath. — 0. to Ga. and Kan. — Shrub or small 

 tree. 



22. S. tristis Ait. (Dwarf Gray W.) Leaves 

 similar to those of the last, small (1-5 cm. long), 

 crowded, linear-oblanceolate, tapering to a very short petiole; 661. s. tristis. 

 stip7des minute, deciduous; aments very small, globular or ovoid, 

 1-1.5 cm. long in fruit. — Sandy plains or on the borders of hillside thickets, 

 N. E. to Minn, and southw., mostly near the coast. — A tufted shrub, 0.5 m. 

 high^ Fig. 661. 



2. Leaves lustrous beneath with minute silky jyubescence, fine-serrate ; capsules 



blunt. 



23. S. sericea Marsh. (Silky W.) Leaves narrowly lanceolate, 0.4-1 dm, 

 long, 1-2.5 cm. broad, finely serrate, at first (principally beneath) very silky 

 turning black in drying ; stipules narrow, deciduous ; aments nar 

 rowly cylindrical, the fertile densely flowered, in maturity 2-3 cm 

 long ; capsule sericeous, ovoid-oblong, round-tipped, its pedicel 

 about equaling the short-hairy scale and twice exceeding the gland. 

 — Large shrub of wet places, N. B. to N. C. and Mich. Fig. 662. 



660. 8. humilis. 



b. Aments leafy-bracted at base, appearing with the leaves. 



1. Leaves strongly rugose in age, grayish-pub es- 

 cent or glabrate beneath; capsule gray-pubes- 

 cent, its p)edicel several times exceeding the 

 subtending scale. 



24. S. rostrata Eichards. Leaves obovate to 

 elliptic-lanceolate, 3-10 cm. long, acute or acumi- 

 nate, diill green and minutely downy above, serrate, 

 crenate, or subentire, thin, becoming rigid ; stipules when pres- 

 ent semi-cordate, toothed, acute ; sterile aments narrowed at 

 base, the /e)ti7e loosely flowered, 2-6 cm. long; capsules tapering 

 to a very long slender beak ; pedicels thread-like, much exceeding 

 the pale rose-tipped linear thinly villous .scales ; style scarcely 

 any ; stigma lobes entire or deeply parted. (S. Bebbiana Sarg.) 

 — Shrub or small tree of moist or dry ground, Nfd. to Alaska, 

 s. to N. J., Pa-, 111., la., etc. Fig. 663, 



S. rosti'ata 



