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Salix pyrifolia Andersson
Life   Plantae   Dicotyledoneae   Salicaceae   Salix

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Associates · map
FamilyScientific name @ source (records)
Melampsoraceae  Melampsora abieti-capraearum @ BPI (1)

Melampsora bigelowii @ BPI (2)

Melampsora ribesii-purpureae @ BPI (3)
Rhytismataceae  Rhytisma salicinum @ BPI (1)

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Salix pyrifolia Andersson
balsam willow

Image of Salix pyrifolia

General Information
Symbol: SAPY
Group: Dicot
Family: Salicaceae
Duration: Perennial
Growth Habit : Shrub
Native Status : CAN   N
L48   N
Data Source and Documentation
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green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
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   


click on a thumbnail to view an image, or see all the Salix thumbnails at the Plants Gallery

Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 1: 596. Provided by Kentucky Native Plant Society . Scanned by Omnitek Inc . Usage Requirements .



Symbol Scientific Name
SABA12 Salix balsamifera (Hook.) Barratt ex Andersson
SABAA3 Salix balsamifera (Hook.) Barratt ex Andersson var. alpestris Bebb
SABAL4 Salix balsamifera (Hook.) Barratt ex Andersson var. lanceolata Bebb
SABAV2 Salix balsamifera (Hook.) Barratt ex Andersson var. vegeta Bebb
SACOB Salix cordata Muhl. var. balsamifera Hook.
SAPYL Salix pyrifolia Andersson var. lanceolata (Bebb) Fernald


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 pyrifolia Andersson – balsam willow

Subordinate Taxa

This plant has no children

Legal Status

Threatened and Endangered Information:
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete protected plant list for that location.
New York balsam willow Threatened

Wetland Status

Interpreting Wetland Status

North America
Great Plains OBL
Midwest FACW
Northcentral & Northeast FACW

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Integrated Taxonomic Information System (SACOB)
Integrated Taxonomic Information System (SAPY)
Integrated Taxonomic Information System (SAPYL)
Lady Bird Johnson Wildflower Center Native Plant Information Network (SAPY)
Native American Ethnobotany (University of Michigan - Dearborn) (SAPY)
University of Wisconsin - Stevens Point Freckmann Herbarium (SAPY)



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 88, 101, 102, 114 , 115 , 116, 118, 127 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 7 | Salicaceae | Salix

62. Salix pyrifolia Andersson, Monogr. Salicum. 162, plate 8, fig. 93. 1867.

Balsam willow

Salix balsamifera Barratt ex Andersson; S. pyrifolia var. lanceolata (Bebb) Fernald

Plants 0.4-4 m. Stems: branches red-brown, not glaucous, (highly glossy), glabrous; branchlets red-brown, yellow-brown, or yellowish, (not or weakly glaucous), glabrous, (inner membranaceous bud-scale layer free, not separating from outer layer). Leaves: stipules (early deciduous), foliaceous or rudimentary on early ones, foliaceous on late ones, apex acute, convex, or rounded; petiole convex to flat, or shallowly grooved adaxially, 7-20 mm, glabrous or sparsely velvety adaxially; largest medial blade narrowly oblong, oblong, elliptic, or broadly elliptic, 30-103 × 19-40 mm, 1.5-3.4 times as long as wide, base cordate, subcordate, rounded or convex, margins flat or slightly revolute, serrulate, irregularly serrate, crenate, or sinuate, apex acute or acuminate, abaxial surface glaucous, glabrous, adaxial slightly or highly glossy, glabrous; proximal blade margins serrulate or entire; juvenile blade translucent, glabrous or pilose abaxially, hairs white. Catkins: staminate flowering just before leaves emerge, pistillate flowering as leaves emerge; staminate stout or slender, 18.5-63 × 7-15 mm, flowering branchlet 1-5 mm; pistillate loosely flowered, stout or slender, 25-85 × 8-20 mm, flowering branchlet 2-22 mm; floral bract tawny, 1-2.4 mm, apex acute or convex, abaxially sparsely to moderately densely hairy, hairs straight or wavy. Staminate flowers: adaxial nectary square or ovate, 0.3-0.5 mm; filaments distinct, glabrous or sparsely hairy basally; anthers yellow, (ellipsoid or shortly cylindrical), 0.5-0.8 mm. Pistillate flowers: adaxial nectary narrowly ovate or square, 0.3-0.7 mm, shorter than stipe; stipe 1.8-3.5 mm; ovary obclavate, glabrous, beak slightly bulged below styles; ovules 10-19 per ovary; styles 0.4-0.5 mm; stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.2-0.23-0.32 mm. Capsules 7-8 mm. 2 n = 38.

Flowering May-mid Jun(-mid Jul in subalpine). Fens, wet lake and slough margins, treed bogs; 0-300 m (-1600 m in subalpine); Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Ont., P.E.I., Que., Sask., Yukon; Maine, Mich., Minn., N.H., N.Y., Vt., Wis.

Salix pyrifolia is characterized by juvenile leaves membranaceous and translucent, and largest medial leaves subcoriaceous, with abaxial surfaces reticulate, and with bases often cordate. Buds and foliage are reported to have a balsam-like fragrance.


Salix pyrifolia forms natural hybrids with S. brachycarpa var. psammophila . Hybrids with S. discolor have been reported (C. K. Schneider 1921; M. L. Fernald 1950) but no convincing specimens have been seen.

Updated: 2019-10-21 00:56:03 gmt
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