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Salix fuscescens Andersson
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FamilyScientific name @ source (records)
Melampsoraceae  Melampsora epitea @ BPI (3)

Melampsora ribesii-purpureae @ BPI (2)

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Salix fuscescens Andersson
Alaska bog willow

General Information
Symbol: SAFU
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
SAAR20 Salix arbutifolia auct. non Pall.
SAFUR Salix fuscescens Andersson var. reducta C.R. Ball


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 fuscescens Andersson – Alaska bog 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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FNA Vol. 7 Page 25, 61, 68, 72 , 73, 74, 76, 80 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 7 | Salicaceae | Salix

33. Salix fuscescens Andersson, Monogr. Salicum. 97. 1867.

Alaska bog willow

Salix fuscescens var. reducta C. R. Ball

Plants 0.15-0.55 m, forming clones by layering. Stems decumbent or trailing; branches yellow-brown, glabrous; branchlets red-brown, gray-brown, or yellow-brown, glabrous. Leaves: stipules absent or rudimentary; petiole 2-5.6(-6.4) mm; largest medial blade hypostomatous, narrowly oblong, oblong, obovate, or broadly obovate, (14-)17-27(-45) × 7-21 mm, 1.4-2.5 times as long as wide, base cuneate or convex, margins slightly revolute or flat, entire, or serrulate to crenate proximally, (glands marginal), apex convex, acuminate, or rounded, abaxial surface glaucous, glabrous, adaxial slightly or highly glossy, glabrous; proximal blade margins entire, (sometimes hairs ferruginous abaxially); juvenile blade glabrous. Catkins: staminate 8-58 × 5-19 mm, flowering branchlet 0.5-15 mm; pistillate moderately densely to loosely flowered, slender, stout, or subglobose, 13.5-64(-70 in fruit) × 6.5-15 mm, flowering branchlet 4-18 mm; floral bract brown or bicolor, 0.8-1.6 mm, apex rounded, entire, abaxially sparsely hairy, hairs (usually white, sometimes also ferruginous), wavy or straight. Staminate flowers: abaxial nectary absent, adaxial nectary oblong, 0.5-0.8 mm; filaments distinct or connate less than 1/2 their lengths, glabrous; anthers ellipsoid or shortly cylindrical, 0.3-0.4 mm. Pistillate flowers: abaxial nectary absent, adaxial nectary oblong, 0.4-0.9 mm, shorter than stipe; stipe 0.8-2.5 mm; ovary obclavate, pubescent or short-silky to glabrescent, hairs (often ferruginous), flattened or ribbonlike, beak abruptly tapering to styles; ovules 8-12 per ovary; styles connate or distinct distally, 0.1-0.4(-0.65) mm; stigmas slenderly or broadly cylindrical, 0.24-0.3-0.68 mm. Capsules 5.5-8 mm. 2 n = 38.

Flowering Jun-late Jul. Bogs, treed bogs, sedge fens, poorly drained lakeshores, wet tundra, silt or fine sandy-gravel substrates; 50-1000 m; Man., N.W.T., Nunavut, Yukon; Alaska; e Asia (Chukotka, Japan [Hokkaido], North Korea, Russian Far East, arctic, e Siberia).


Salix fuscescens forms natural hybrids on the arctic coast of Alaska with S. arctica, S. ovalifolia , and S. phlebophylla , and in continental Nunavut with S. herbacea . These hybrids are not usually recognized but they appear sporadically.

Salix fuscescens × S. herbacea has crenate margins and is often confused with the latter species.

Some specimens identified as Salix fuscescens × S. ovalifolia are similar to hybrids with S. phlebophylla , but they lack marcescent leaves.

Salix fuscescens × S. phlebophylla has obovate leaves with one or two pairs of serrulations proximally, and glaucous abaxially as in S. fuscescens , but it grows in relatively dry tundra and has the marcescent, sometimes skeletonized, leaves of S. phlebophylla .

Updated: 2019-08-24 18:53:13 gmt
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