EcoFlora - Salix

Salix
Family: Salicaceae Liz Makings	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: Denver-Boulder Metropolitan Area Salix alba Map not Available Salix amygdaloides Map not Available Salix anglorum Map not Available Salix arctica Map not Available Salix babylonica Map not Available Salix bebbiana Map not Available Salix boothii Map not Available Salix brachycarpa Map not Available Salix calcicola Map not Available Salix candida Map not Available Salix discolor Map not Available Salix drummondiana Map not Available Salix eriocephala Map not Available Salix exigua Map not Available Salix famelica Map not Available Salix geyeriana Map not Available Salix glauca Map not Available Salix glaucops Map not Available Salix interior Map not Available Salix irrorata Map not Available Salix lanata Map not Available Salix lasiandra Map not Available Salix ligulifolia Map not Available Salix lucida Map not Available Salix lutea Map not Available Salix melanopsis Map not Available Salix monticola Map not Available Salix myrtillifolia Map not Available Salix nigra Map not Available Salix nivalis Map not Available Salix pellita Map not Available Salix pentandra Map not Available Salix petiolaris Map not Available Salix petrophila Map not Available Salix planifolia Map not Available Salix pseudolapponum Map not Available Salix purpurea Map not Available Salix reticulata Map not Available Salix scouleriana Map not Available Salix serissima Map not Available Salix subcoerulea Map not Available Salix wolfii Map not Available Salix × fragilis Map not Available