Salix

Contains 6 accepted taxa overall.

Characteristics
Salix L.
WILLOW
Classification
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MALPIGHIALES
Salix
Citation
SALIX Linnaeus, Sp. Pl. 1015. 1753, nom. cons.
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TYPE: Salix alba Linnaeus 1753, typ. cons.
Species
Scientific Name Common Name Status Photos
Salix babylonica WEEPING WILLOW Not Native FACW (NWPL) OBL (DEP)
Salix caroliniana CAROLINA WILLOW; COASTALPLAIN WILLOW Native OBL (NWPL) OD (WAP) OBL (DEP)
Salix eriocephala MISSOURI RIVER WILLOW; HEART-LEAVED WILLOW Native Endangered-State FACW (NWPL) OBL (DEP)
Salix floridana FLORIDA WILLOW Native Endangered-State FACW (NWPL) OBL (DEP)
Salix humilis DWARF WILLOW; PRAIRIE WILLOW Native FACU (NWPL) OBL (DEP)
Salix nigra BLACK WILLOW Native OBL (NWPL) OBL (DEP)
[Family identification key]
1.  Leaf blade margin entire, undulate, to obscurely toothed near the apex
1.  Leaf blade margin regularly toothed
2
2.  Mature leaf blades oblong to broadly lanceolate, the tip acute to abruptly acuminate, 2.5-5 cm wide, 2.4-3 times longer than wide
2.  Mature leaf blades linear-lanceolate to lanceolate, the tip tapered-acue, 0.5-3.5 cm wide, 3-14 times longer than wide
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3.  Shrub to 6 m, with several main stems; foliaceous stipules often present; leaf blade base rounded to subcordate, larger blades 2-3.5 cm wide
3.  Shrub or tree to 20 m, mostly with one to few trunks or main stems; foliaceous stipules present or absent; leaf blade base usually cuneate, acute, to obtuse, larger blades 0.5-2.5 cm wide
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4.  Bud-scale margins connate; catkin 0.9-3.5 cm long, branchlet 0-6 mm long; stamens usually 2, sometimes 1; pistillate bracts persistent
4.  Bud-scale margins distinct, overlapping; catkin 2.5-10 cm long, branchlet 4-35 mm long; stamens 3-7(-9); pistillate bracts deciduous after flowering
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5.  Shrubs to trees to 10 m; largest medial blades: abaxial surface glaucous; pistillate bracts deciduous or persistent after flowering; pistillate stipe 1.3-5.3 mm long
5.  Trees to 20+ m; largest medial blades: abaxial surface not glaucous, occasionally thinly glaucous; pistillate bracts deciduous after flowering; pistillate stipe 0.5-1.5 mm long