EcoFlora - Salix

Salix
Family: Salicaceae Max Licher	VPAP Gleason & Cronquist Resources JANAS 29(1) PLANTS: Shrubs or trees, not clonal or clonal by root suckers. WINTER BUDS: with one external budscale; budscale margins coalescent or free and overlapping. STEMS: erect or spreading, pendulous in some naturalized trees, flexible or brittle at base, not, or thickly, glaucous. LEAVES: stipules leaf-like, rudimentary or absent, usually not strongly glandular; petioles lacking glandular dots near base of blade, dotted or lobed; proximal leaves on vegetative shoots or leaves on flowering branchlets entire, gland-dotted or toothed; mature blades linear to broadly obovate, the margins entire to toothed, the surfaces hairy, glabrous or becoming so, the hairs white or white and rust-colored. INFLORESCENCE: cylindrical or subspherical catkins, sessile or on short leafy branchlets, emerging before (precocious), with (coetaneous), or after (serotinous) the leaves. FLOWERS: subtended by a bract; pistillate floral bracts persistent after flowering or deciduous; stamens (1-) 2(-8); pistils sessile or stipitate, subtended by 1 to several flattened, rod-like, square or cupulate nectaries. FRUIT: lanceolate or ovate. x = 19, 22. NOTES: Ca. 450 spp. worldwide, especially n temp., arctic. (Ancient name for willow). Argus, G. W. 1986. Syst. Bot. Monog. 9:1-170. Argus, G. W. and C.-E. Granfelt. 1988. Madrofio 35:5. Argus, G.W. & C.L. McJannet. 1992. Brittonia 44: 461-474; Dom, R.D. 1976. Canad. J. Bot. 54: 2769-2789; Dom, R.D. 1977. Rhodora 79: 390-429. Taxonomically difficult and often highly variable. Not all specimens will key easily; sprout shoots and other extreme variants are not included in keys. REFERENCES: Argus, George W. 1995. SalicaceaePart 2. Salix. J. Ariz. - Nev. Acad. Sci. 29(1): 39 Vascular plants of NE US and adjacent Canada Catkins mostly ascending or spreading, seldom drooping, developing before, with, or less often after the lvs, their scales mostly entire, sometimes erose or shallowly toothed at the tip; fls with a single short and broad to slender and elongate ventral protuberance called a gland, or the staminate fls of some spp. also with a dorsal gland; stamens typically 2, seldom only 1 (by fusion of 2), or in some spp. 3-8; stigmas 2, entire or more often bifid; capsules 2-valved; shrubs or less often trees, sometimes depressed and mat-forming; winter-buds covered by a single nonresinous scale. 300+, mainly N. Temp. Taxonomy complicated by hybridization. Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp. ©The New York Botanical Garden. All rights reserved. Used by permission.
Species within checklist: National Park Service: Indiana Dunes National Park Salix alba Map not Available Salix amygdaloides Map not Available Salix bebbiana Map not Available Salix candida Map not Available Salix cinerea Map not Available Salix cordata Map not Available Salix discolor Map not Available Salix eriocephala Map not Available Salix fragilis Map not Available Salix humilis Map not Available Salix interior Map not Available Salix lucida Map not Available Salix myricoides Map not Available Salix nigra Map not Available Salix pedicellaris Map not Available Salix petiolaris Map not Available Salix sericea Map not Available Salix syrticola Map not Available Salix x pendulina Map not Available