STATE GEOLOGIST. 129 



neapolis, Kassube; Blue Earth county, Leiberg; New Ulm, Juni; uorth of lake Superior, 

 Agassiz; upper Mississippi river, Garrison-, Ked river valley, Macoun. 



S. tristis. Ait. Dwarf G-ray Willow. 



Lapliam. Minneapolis, Winchell; Blue Earth county, Leiberg; Lake City, Mrs. Bay. 



S. humilis, Marshall. Prairie Willow. 



Blue Earth county, Leiberg, Upham; frequent in Emmet county, Iowa, Cratty; 

 abundant near the Mississippi river, on dry, sandy land, especially in openings of 

 woods, from lake Pepin, ilfiss Manning, Mrs. Ray, and Eamsey county, north at least 

 to Brainerd (usually only about one foot high, agreeing best, excepting in habitat, 

 with Gray's description of S. tristis), Upham; north of lake Superior, Agassiz, Proba- 

 bly throughout the state. 



S. discolor, Muhl. Glaucous Willow. Pussy Willow. 

 Common, or frequent, throughout the state. 



[S. sericea, Marshall, probably occurs, but infrequently, in Minnesota.] 



S. petiolaris, Smith.* Petioled Willow. 



Freeborn coiinty (frequent), Upliam. Probably our prevailing form of this species 

 is var. gracilis, Anders. {M. S. Bebb.) 



S. purpurea, L. Purple Willoiv. 

 Minneapolis, Simmons. Infrequent. 



S. cordata, Muhl. Heart-leaved Willow. 

 Common, or frequent, throughout the state. 



S. cordata, Muhl., var. ang-ustata. Gray. 



Stearns county, Garrison. [North of lake Superior, Agassiz; Nebraska (common), 

 Aiighey.'] 



S. balsaniifera, Barratt.f (S. pyrifolia, Anders.; see notes by M. S. Bebb in 

 Botanical Gazette, vol. iv, p. 190.) Balsam-bearing Willow, 

 Ked river valley near Saint Vincent, Burgess, Macoun. North. 



* Salix PETIOLARIS, Smith, var. gracilis, Anders. Female aments gracefully 

 subpendulous, at length somewhat leafy-peduncled, very loosely flowered ; scales Un- 

 gulate, apex brownish ; capsules long acute-rostrate from an ovate base, thinly silky, 

 or somewhat glabrous, very long-pediceled ; pedicel nearly eight times the length of 

 the nectary; style very short ; stigmas 2-parted, fuscous, spreading ; leaves narrowly 

 lanceolate-linear, serrulate, about 2 inches long and 2 to 4 lines wide, pale and subglau- 

 cous beneath, both sides at length glabrous. Varies : 1st, sericocarpa ; capsules nar- 

 rowly conical, 214 lines long, thinly silky. 2d, leiocarpa ; capsules thick at base, green- 

 ish red. Andersson in DC. Prod., 16, 2, 235 ; translated by M. S. Bebb. 



tSALix balsamifera, Barratt. A glabrous, much branched shrub, 4 to 8 feet 

 high ; twigs crimson where exposed to the sun ; leaves ovate, abruptly pointed, 1 inch 

 wide by IV2 inches long, on sterile shoots oblong-lanceolate, 1^4 inches wide by 3 to 4 

 inches long, all rounded or subcordate at base, very thin and slightly hairy beneath 

 when young, rigid, glabrous, and prominently reticulate-veined when mature, bright 

 green above, paler or glaucous beneath, margin finely glandular-serrate; petioles 

 slender, 14 inch long ; stipules minute, caducous : aments with a few leaf -like bracts at 

 base, the male densely flowered, very silky, female less so and becoming very lax in 

 fruit, bracts often more leafy ; scales pale or rosy ; capsules elongate-conical or rostrate 

 from a thick base, 2 or 3 lines long, glabrous, the long pedicels six to eight times the 

 length of the nectary ; style rather short, bifid ; lobes of the stigma thick, spreading, 

 emarginate. "No. 53, Herb. H., B. and T." (v. s. in h. Torr.) S. cordata, Muhl., var. 

 balsamifera. Hook., Fl. Bor.-Am., 2, 149. S. pyrifolia, Anders., DC. Prod., 16, 2, 264.— 

 White mountains of N. H., Pringle; New Brunswick, Fowler; and Labrador, Allen; 

 westward to the Saskatchewan. Readily distinguished from S. cordata by the very 

 loosely flowered fertile aments, often two inches or more long in fruit, thicker and more 

 yellowish staminate aments, and the proportionately broader and shorter Amelanchier- 

 hke leaves. M. S. Bebb, MSS. 

 9F 



