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Salix richardsonii Hook.
Life   Plantae   Dicotyledoneae   Salicaceae   Salix

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FamilyScientific name @ source (records)
Melampsoraceae  Melampsora epitea @ BPI (1)
Rhytismataceae  Rhytisma salicinum @ BPI (2)

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Salix richardsonii Hook.
Richardson's willow

General Information
Symbol: SARI4
Group: Dicot
Family: Salicaceae
Duration: Perennial
Growth Habit : Shrub
Native Status : AK   N
Data Source and Documentation
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Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   




Symbol Scientific Name
SALAR Salix lanata L. ssp. richardsonii (Hook.) Skvort.
SARIM2 Salix richardsonii Hook. var. mckeandii Polunin


Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Dilleniidae
Order Salicales
Family Salicaceae – Willow family
Genus Salix L. – willow
Species Salix richardsonii Hook. – Richardson's willow

Subordinate Taxa

This plant has no children

Legal Status

Wetland Status

Interpreting Wetland Status

North America
Alaska FACW

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Source Large Mammals Small Mammals Water Birds Terrestrial Birds


Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover

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Following modified from Flora of North America
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Link to Flora of North America home
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FNA Vol. 7 Page 95, 114, 115, 142 , 144 , 145 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 7 | Salicaceae | Salix

93. Salix richardsonii Hooker, Fl. Bor.-Amer. 2: 147, plate 182. 1838. (as richardsoni).

Richardson's willow

Salix lanata Linnaeus subsp. richardsonii (Hooker) A. K. Skvortsov; S. richardsonii var. mckeandii Polunin

Plants 0.3-6.5 m. Stems: branches red-brown, yellow-brown, or violet, not to strongly glaucous (slightly or highly glossy), villous to glabrescent with persistent patches of hairs; branchlets red-brown or yellow-brown, pilose to densely villous, (buds caprea -type, scale inner membrane free, separating from outer layer). Leaves: stipules (sometimes marcescent), foliaceous, (3-12-35 mm, 1.7-3.6-6.6 times as long as wide, lanceolate or narrowly elliptic, sometimes ovate or oval, base broad, abruptly tapering), apex acuminate or acute; petiole convex to flat or shallowly grooved adaxially, 2-7.3-27 mm, villous to glabrescent adaxially; largest medial blade broadly to narrowly elliptic, or obovate, 23-45-100 × 10-22-55 mm, 1.2-2.2-4.2 times as long as wide, base cuneate, convex, or concave, margins slightly revolute or flat, entire or serrulate, apex acute, acuminate, or convex, abaxial surface glaucous, glabrous or pilose, hairs (white, sometimes also ferruginous), curved, adaxial slightly glossy, moderately densely villous or pilose to glabrescent; proximal blade margins usually entire, sometimes serrulate; juvenile blade yellowish green, abaxially densely villous or pilose, sometimes glabrous, hairs white, sometimes also ferruginous. Catkins flowering before leaves emerge; staminate stout or subglobose, 22-53 × 16-24 mm, flowering branchlet 0 mm; pistillate densely flowered, slender or stout, 25-69(-85 in fruit) × 13-20 mm, flowering branchlet 0-2 mm; floral bract brown or black, 2.4-3.2 mm, apex acute, rounded, or retuse, abaxially moderately densely hairy, hairs straight. Staminate flowers: adaxial nectary narrowly oblong to oblong, 0.7-1.8 mm; filaments distinct to connate ca. 1/2 their lengths, glabrous; anthers purple turning yellow, ellipsoid to shortly cylindrical, 0.5-0.8 mm. Pistillate flowers: adaxial nectary narrowly oblong, oblong, or flask-shaped, 0.6-1.4 mm (2+-lobed), longer than stipe; stipe 0.4-1 mm; ovary pyriform, beak gradually tapering to styles; ovules 22-37 per ovary; styles 1-2.8 mm; stigmas slenderly cylindrical, 0.32-0.63-0.86 mm. Capsules 4.5-6.8 mm. 2 n = 38.

Flowering late May-early Jul. Arctic, subarctic, subalpine and boreal, stream terraces and floodplains, open forests, wet sedge meadows, fens, drumlin fields, gravel ridges, bogs, cliff ledges, snowbeds, silt, sand and gravel, calcareous or igneous substrates; 10-1800 m; B.C., Man., N.W.T., Nunavut, Yukon; Alaska; e Asia (Chukotka, Kamchatka, Russia [Anadyr], e Siberia).


Salix richardsonii forms natural hybrids with S. barclayi and S. calcicola .

Updated: 2019-08-19 07:46:03 gmt
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