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Salix niphoclada Rydb.
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Salix niphoclada Rydb.
barrenground willow

General Information
Symbol: SANI10
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
SABRF3 Salix brachycarpa Nutt. ssp. fullertonensis (C.K. Schneid.) Á. Löve & D. Löve
SABRN Salix brachycarpa Nutt. ssp. niphoclada (Rydb.) Argus
SABRF4 Salix brachycarpa Nutt. var. fullertonensis (C.K. Schneid.) Argus
SABRM Salix brachycarpa Nutt. var. mexiae C.R. Ball
SAFU3 Salix fullertonensis C.K. Schneid.
SAGLN Salix glauca L. var. niphoclada (Rydb.) Wiggins
SAMU4 Salix muriei Hultén
SANIF Salix niphoclada Rydb. var. fullertonensis (C.K. Schneid.) Raup
SANIM Salix niphoclada Rydb. var. mexiae (C.R. Ball) Hultén
SANIM3 Salix niphoclada Rydb. var. muriei (Hultén) Raup


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 niphoclada Rydb. – barrenground willow

Subordinate Taxa

This plant has no children

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Wetland Status

Interpreting Wetland Status

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Integrated Taxonomic Information System (SAGLN)
Integrated Taxonomic Information System (SAMU4)
Integrated Taxonomic Information System (SANI10)
Integrated Taxonomic Information System (SANIF)
Integrated Taxonomic Information System (SANIM)
Integrated Taxonomic Information System (SANIM3)



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 62, 67, 88 , 89, 90, 91 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 7 | Salicaceae | Salix

49. Salix niphoclada Rydberg, Bull. New York Bot. Gard. 1: 272. 1899.

Barren-ground or snow willow

Salix brachycarpa Nuttall subsp. fullertonensis (C. K. Schneider) Á. Löve & D. Löve; S. brachycarpa var. fullertonensis (C. K. Schneider) Argus; S. brachycarpa var. mexiae C. R. Ball; S. brachycarpa subsp. niphoclada (Rydberg) Argus; S. fullertonensis C. K. Schneider; S. glauca Linnaeus var. niphoclada (Rydberg) Wiggins; S. muriei Hultén; S. niphoclada var. fullertonensis (C. K. Schneider) Raup; S. niphoclada var. mexiae (C. R. Ball) Hultén; S. niphoclada var. muriei (Hultén) Raup

Plants 0.3-1.5(-3) m, not clonal. Stems erect, decumbent, or trailing; branches gray-brown, yellow-brown, or red-brown, pilose, villous, or long-silky to glabrescent; branchlets violet, red-brown, or yellow-brown, pilose, densely villous, long-silky, or tomentose. Leaves: stipules (sometimes marcescent), foliaceous, (sometimes obscured by hairs); petiole (shallowly grooved adaxially), 2-5.5 mm, (usually shorter than or barely exceeding subtended bud, villous adaxially); largest medial blade hypostomatous or amphistomatous, narrowly oblong, narrowly to broadly elliptic, lanceolate, or obovate, 13-64 × 6-22 mm, 1.6-5.5 times as long as wide, base convex, margins slightly revolute, entire (obscured by hairs), apex acuminate or acute, abaxial surface densely villous or woolly to pilose, hairs straight or wavy, adaxial slightly glossy, moderately densely to sparsely villous; proximal blade margins entire; juvenile blade abaxially densely long-silky. Catkins: staminate 12-42 × 4-14 mm, flowering branchlet 0-20 mm; pistillate densely flowered, slender, stout, or subglobose, 16-69 × 4-13 mm, flowering branchlet 4-30 mm; floral bract tawny, brown, or black, 1.2-3.2 mm, apex rounded, entire, abaxially sparsely to moderately densely hairy, hairs wavy. Staminate flowers: abaxial nectary 0.5-1.2 mm, adaxial nectary narrowly oblong to ovate or flask-shaped, 0.5-1.5 mm, nectaries distinct or connate and cup-shaped; filaments distinct, glabrous, or sparsely hairy on proximal 1/2; anthers ellipsoid or globose, 0.3-0.5 mm. Pistillate flowers: abaxial nectary rarely present, 0.7 mm, adaxial nectary narrowly oblong, ovoid, or flask-shaped, 0.5-2 mm, longer than stipe; stipe 0-0.5 mm; ovary pyriform, very densely villous or long-silky, beak slightly bulged below or abruptly tapering to styles; ovules 8-20 per ovary; styles connate to almost distinct, 0.2-0.8 mm; stigmas slenderly to broadly cylindrical, 0.2-0.36-0.6 mm. Capsules 4-6 mm.

Flowering Jun-Jul. Wet to moderately well-drained calcareous, gravelly or sandy floodplains, terraces, eskers, drumlins, fine, silty loess deposits, dry to mesic stony alpine slopes and saline flats, limestone talus, sand blowouts, plains; 10-2300 m; B.C., N.W.T., Nunavut, Yukon; Alaska; Asia (Russia).

Salix niphoclada was treated as S. brachycarpa subsp. niphoclada (G. W. Argus 1965, 1973) because where the ranges of the two taxa overlap in northern British Columbia they appeared to intergrade. Species rank is used here, however, because there is no evidence to suggest that intergradation is common or extends beyond the small area of overlap.

Salix brachycarpa var. fullertonensis , which mainly occurs in southern Nunavut and the western side of Hudson Bay, is characterized by smaller leaves and catkins, broad, reddish floral bracts, and more sparsely hairy branchlets (G. W. Argus 1965). Its intergradation with S. niphoclada is so extensive that it is not recognized here as a separate taxon.


Salix niphoclada forms natural hybrids with S. glauca var. acutifolia and S. setchelliana .

Salix niphoclada × S. setchelliana is a putative hybrid from Sheep Mountain, Kluane, Yukon, at 1180 m. It resembles S. niphoclada in leaf shape and indumentum, stigmas 0.6 mm, floral bracts oblong, 1.8 mm, and in the shape and length of pistillate catkins, but it has the glabrous, reddish ovaries of S. setchelliana . Both putative parents occur in the area.

Updated: 2019-11-20 16:59:12 gmt
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