According to observations of naturalists and beekeepers.
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Shining willow is distributed from Alaska east to Labrador and south to California, Kansas, and North Carolina. It is mostly absent from dry interior regions of the Intermountain West.
This plant is present in at least 48 states/provinces in this country.
Shining willow is a deciduous small tree or tall shrub, occasionally growing up to 40 feet (12 m) tall. It typically has several stems, becoming increasingly shrubby with increasing elevation. The bark is smooth and thin, and the bole and branches are brittle. Twigs are relatively stout. It has lanceolate leaves that are 2 to 5 inches (5-13 cm) long. Shining willow is dioecious, so individual trees bear either pistillate or staminate catkins. The fruit is a hairless capsule, but the seed coat is covered with soft, cottony hairs. The typical variety differs from tail-leaf willow by having glaucous undersides to the leaves.
Shining willow flowers from late March to late June across its range; leaves appear with the catkins. Seeds disperse in late spring to early summer, depending on elevation and latitude. The dispersal period is usually for ≤1 month.
Salix lucida (aka: Shining willow, Greenleaf willow, Tail-leaf willow, Whiplash willow, Pacific willow, Lance-leaf willow, Longleaf willow, Red willow, Western shining willow)
Salix scouleriana (aka: Scouler's willow, Upland willow)
Salix arbusculoides (aka: Littletree willow)
Salix bebbiana (aka: Bebb willow, Beak willow, Beaked willow, Long-beaked willow, Diamond willow, Chaton, Petit Minou, Smooth Bebb willow)
Salix planifolia (aka: Diamondleaf willow, Planeleaf willow)
Astragalus (aka: Milkvetch, Locoweed, Goat's-thorn)
Salix boothii (aka: Booth's willow)
Salix alaxensis (aka: Feltleaf willow, Alaska willow)
Rubus idaeus (aka: Raspberry, Black-haired red raspberry, Brilliant red raspberry, American red raspberry, Red raspberry, Smoothleaf red raspberry, Wild raspberry, Wild red raspberry, Grayleaf raspberry)
Rhus glabra (aka: Smooth sumac, Common sumac, Rocky Mountain sumac, Red sumac, Western sumac, White sumac)
Salix lutea (aka: Yellow willow)
Allium schoenoprasum (aka: Chives)
Brassica napus (aka: Rapeseed)
Sinapis arvensis (aka: Charlock mustard, California rape, Charlock, Corn mustard, Canola, Kaber mustard, Rapeseed mustard)
Prunus pensylvanica (aka: Pin cherry, Fire cherry, Bird cherry)
Prunus virginiana (aka: Chokecherry, Western chokecherry, Common chokecherry, Black chokecherry)
Rhamnus cathartica (aka: Common buckthorn, European buckthorn, Dahurian buckthorn)
Salix myrtillifolia (aka: Blueberry willow, Low blueberry willow, Tall blueberry willow)
Salix glauca (aka: Grayleaf willow, Gray willow, Gray-leaved willow)
Rubus parviflorus (aka: Thimbleberry, Western thimbleberry)
Salix brachycarpa (aka: Shortfruit willow, Barren-ground willow, Small-fruit sand dune willow, Small-fruit willow)
Brassica rapa (aka: Field mustard, Common mustard, Wild mustard, Wild turnip, Forage turnip, Wild rutabaga, Birdsrape mustard, Rape mustard)
Echium vulgare (aka: Viper's bugloss, Blueweed, Blue thistle)
Chamaenerion angustifolium (aka: Fireweed, Great willowherb, Rosebay willowherb, Saint Anthony's Laurel, French-willow)
Agastache foeniculum (aka: Giant hyssop, Blue giant hyssop, Anise hyssop, Fragrant giant hyssop, Lavender giant hyssop)
Borago officinalis (aka: Borage, Starflower, Common borage, Cool-tankard, Tailwort)
Rubus chamaemorus (aka: Cloudberry, Bake apple, Baked apple berry, Bakeapple, Nordic berry, Knotberry, Aqpik, Low-bush salmonberry, Averin, Evron)
Cirsium arvense (aka: Creeping Thistle, Canada thistle, Field thistle, California thistle, Lettuce from hell thistle, Corn thistle, Cursed thistle, Green thistle, Hard thistle, Perennial thistle, Prickly thistle, Small-flowered thistle, Way thistle, Stinger-needles)