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Salix petiolaris — meadow willow

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Facts

Meadow willow gets its specific epithet (petiolaris) from its petioles, long compared to other willows. The genus name (Salix) comes from the Latin word for "jump", a reference to the rapid growth of willows generally. Often, however, rapid growth in this genus is associated with a short lifespan. Many willows (Salix species) have bitter-tasting bark that contains derivatives of salicylic acid, the main compound in aspirin.

Habitat

Anthropogenic (man-made or disturbed habitats), fens, meadows and fields, shores of rivers or lakes, wetland margins (edges of wetlands)

New England distribution

Adapted from BONAP data

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North America distribution

Adapted from BONAP data

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Characteristics

Habitat
wetlands
New England state
  • Connecticut
  • Maine
  • Massachusetts
  • New Hampshire
  • Rhode Island
  • Vermont
Growth form
the plant is a shrub (i.e., a woody plant with several stems growing from the base)
Leaf type
the leaf blade is simple (i.e., lobed or unlobed but not separated into leaflets)
Leaves per node
there is one leaf per node along the stem
Leaf blade edges
  • the edge of the leaf blade has no teeth or lobes
  • the edge of the leaf blade has teeth
Leaf duration
the leaves drop off in winter (or they wither but persist on the plant)
armature on plant
the plant does not have spines, prickles, or thorns
Leaf blade length
25–70 mm
Leaf blade width
3–20 mm
Leaf stalk
the leaves have leaf stalks
Fruit type (general)
the fruit is dry and splits open when ripe
Bark texture
the bark of an adult plant is thin and smooth
Twig winter color
  • brown
  • green
  • purple
  • red
  • yellow
Bud scale number
there is one scale on the winter bud, and it covers the scale like a cap
Show all characteristics

  • Buds or leaf scars

    Bud scale number
    there is one scale on the winter bud, and it covers the scale like a cap
    Bud scar shape (Fraxinus)
    NA
    Collateral buds
    there are no collateral buds on the sides of the branches
    Leaf scar arrangement
    there is one leaf scar per node on the stem or twig
    Superposed buds
    there are no superposed buds on the branch
    Winter bud scales
    the winter bud is perulate (partially or completely covered with one or more scales)
    Winter bud stalks
    the winter buds have no stalks

  • Flowers

    Anther color
    • the anthers show no hint of a pink, reddish or purplish tint
    • there is a noticeable pink, reddish or purplish tint to the anthers
    Carpels fused
    the carpels are fused to one another
    Enlarged sterile flowers
    there are no enlarged sterile flowers on the plant
    Flower petal color
    NA
    Flower symmetry
    there is only one way to evenly divide the flower (the flower is bilaterally symmetrical)
    Hairs on ovary (Amelanchier)
    NA
    Hypanthium present
    the flower does not have a hypanthium
    Inflorescence position
    the inflorescences grow on the twigs
    Inflorescence type
    the inflorescence is an ament (catkin; slender, usually pendulous inflorescence with crowded unisexual flowers)
    Number of pistils
    1
    Ovary position
    the ovary is above the point of petal and/or sepal attachment
    Petal and sepal arrangement
    the flower lacks sepals and petals
    Petal appearance
    NA
    Petal fusion
    NA
    Sepal appearance
    NA
    Sepal cilia (Ilex)
    NA
    Sepal tip glands
    NA
    Sepals fused only to sepals
    NA
    Stamen number
    1 or 2
    Stamen position relative to petals
    NA
    Stamens fused
    the stamens are not fused to one another

  • Fruits or seeds

    Berry color
    NA
    Fruit type (general)
    the fruit is dry and splits open when ripe
    Fruit type (specific)
    the fruit is a capsule (splits along two or more seams, apical teeth or pores when dry, to release two or more seeds)
    Nut with spines (Fagaceae)
    NA
    Wings on fruit
    there are no wings on the fruit

  • Glands or sap

    Sap color
    the sap is clear and watery
    Stalked glands on fruit (Rosa)
    NA

  • Growth form

    Growth form
    the plant is a shrub (i.e., a woody plant with several stems growing from the base)

  • Leaves

    Hairs on underside of leaf blade
    • the underside of the leaf has hairs on it
    • the underside of the leaf has no hairs
    Hairs on upper side of leaf blade
    • the upper side of the leaf is fuzzy or hairy
    • the upper side of the leaf is not hairy, or has very few hairs
    Leaf blade base shape
    the base of the leaf blade is cuneate (wedge-shaped, tapers to the base with relatively straight, converging edges), or narrow
    Leaf blade base symmetry
    the leaf blade base is symmetrical
    Leaf blade bloom
    there is a noticeable powdery or waxy bloom on the underside of the leaf
    Leaf blade edges
    • the edge of the leaf blade has no teeth or lobes
    • the edge of the leaf blade has teeth
    Leaf blade edges (Acer)
    NA
    Leaf blade flatness
    • the edges of the leaf are curled under
    • the leaf is flat (planar) at the edges
    Leaf blade hairs
    • at least some of the hairs on the leaf blade are reddish-brown, and they do not have glands
    • the hairs on the leaf blade are different from the choices given
    Leaf blade length
    25–70 mm
    Leaf blade scales
    there are no scales on the leaf blades
    Leaf blade shape
    • the leaf blade is elliptic (widest near the middle and tapering at both ends)
    • the leaf blade is lanceolate (lance-shaped; widest below the middle and tapering at both ends)
    • the leaf blade is linear (very narrow with more or less parallel sides)
    • the leaf blade is oblanceolate (lance-shaped, but with the widest point above the middle of the leaf blade)
    Leaf blade texture
    the leaf blade is herbaceous (has a leafy texture)
    Leaf blade translucent dots
    there are no translucent dots on the leaf blade
    Leaf blade vein pattern
    the main veins of the leaf blade are pinnate (the secondary veins branch off at intervals from the main central vein) and non-arcuate (not arched towards the leaf tip)
    Leaf blade veins
    the leaf blade has one main vein running from the base toward the tip
    Leaf blade width
    3–20 mm
    Leaf duration
    the leaves drop off in winter (or they wither but persist on the plant)
    Leaf form
    the plant is broad-leaved (with broadly flattened leaf blades)
    Leaf lobe tips (Quercus)
    NA
    Leaf midrib glands
    the midrib of the leaf blade lacks glands on the upper surface
    Leaf stalk
    the leaves have leaf stalks
    Leaf stalk attachment to leaf
    the petiole attaches at the basal margin of the leaf blade
    Leaf stalk nectaries
    there are no nectaries on the leaf stalk
    Leaf stalk shape
    the leaf stalk is not flattened
    Leaf teeth
    • the leaf blade margin has teeth, which themselves have smaller teeth on them
    • the leaf blade margin is serrulate (with forward-pointing) or denticulate (with outward-pointing) with tiny teeth
    Leaf teeth hairs (Carya)
    NA
    Leaf type
    the leaf blade is simple (i.e., lobed or unlobed but not separated into leaflets)
    Leaves per node
    there is one leaf per node along the stem
    Specific leaf type
    the leaves are simple (i.e., lobed or unlobed but not separated into leaflets
    Stipules
    there are no stipules on the plant, or they fall off as the leaf expands

  • Place

    Habitat
    wetlands
    New England state
    • Connecticut
    • Maine
    • Massachusetts
    • New Hampshire
    • Rhode Island
    • Vermont
    Specific habitat
    • edges of wetlands
    • fens
    • man-made or disturbed habitats
    • meadows or fields
    • shores of rivers or lakes

  • Scent

    Plant odor
    the plant does not have much of an odor, or it has an unpleasant or repellant odor

  • Stem, shoot, branch

    Aerial roots
    the plant has no aerial roots
    Bark texture
    the bark of an adult plant is thin and smooth
    Branch brittleness (willows only)
    the branches are flexible, and do not break easily
    Branch cross-section
    the branch is circular in cross-section, or it has five or more sides, so that there are no sharp angles
    First-year cane (Rubus)
    NA
    Lenticels on twigs
    there are no lenticels on the twigs, or they are very hard to see
    Pith shape
    the outline of the pith in a twig is roughly round
    Pith type
    the pith inside the twig is solid, completely filled with spongy tissue
    Short shoots
    there are no peg- or knob-like shoots present
    Twig bloom
    • the twig has bloom on it
    • there is no bloom on the twig
    Twig hairs
    • the twigs have few or no hairs on them
    • the twigs have hairs, but the hairs do not have glands
    Twig papillae (Vaccinium species only)
    NA
    Twig scales
    there are no scales on the twig surface
    Twig winter color
    • brown
    • green
    • purple
    • red
    • yellow
    Wings on branch
    the branch does not have wings on it
    armature on plant
    the plant does not have spines, prickles, or thorns

Wetland status

Usually occurs in wetlands, but occasionally in non-wetlands. (Wetland indicator code: FACW)

In New England

Distribution

Connecticut
present
Maine
present
Massachusetts
present
New Hampshire
present
Rhode Island
present
Vermont
present

Conservation status

Exact status definitions can vary from state to state. For details, please check with your state.

Connecticut
unrankable (S-rank: SU), special concern (code: SC)
Maine
unranked (S-rank: SNR)
Massachusetts
widespread (S-rank: S5)
Vermont
fairly widespread (S-rank: S4)

From Flora Novae Angliae dichotomous key

23.  Salix petiolaris Sm. N

meadow willow. Salix gracilis Anderss.; S. gracilis Anderss. var. textoris Fern.; S. petiolaris Sm. var. angustifolia Anderss.; S. petiolaris Sm. var. gracilis (Anderss.) Anderss.; S. petiolaris Sm. var. subsericea Anderss.; S. sericea Tausch ex Kern. var. subsericea (Anderss.) Rydb.; S. subsericea (Anderss.) Schneid. • CT, MA, ME, NH, RI, VT; restricted in CT to the northern and/or western portions of state. Hydric fields, fens, shorelines, low ditches, wetland margins.

6×23. Salix bebbiana × Salix petiolaris → This rare willow hybrid is known from ME. It has the general appearance of Salix petiolaris, but the leaf blades are slightly wider relative to length, have somewhat irregular toothing (as to spacing of the teeth) with slightly coarser teeth, a somewhat rugose nature, and red-brown hairs (absent in S. bebbiana).

7×23. Salix candida × Salix petiolaris → This very rare willow hybrid is known from MA. It has narrow-elliptic leaf blades that are acute at apex, sparsely pubescent after expansion, with small, forward-pointing teeth, and weakly revolute margins. The ovaries are mostly moderately villous-tomentose at maturity, the background color showing through pubescence (background color obscured in Salix candida). The capsules are blunt, on stipes 0.9-2 mm, and subtended by light red-brown floral bracts.

12×23. Salix eriocephala × Salix petiolaris → This uncommon willow hybrid is known from MA, ME, and VT (and very likely found in other states as well). It is intermediate between the two species in terms of leaf blade outline and size and frequently shows small stipules at the nodes. The ovaries are usually sparsely pubescent but are sometimes nearly glabrous except for patches of hair near the base and apex.

Native to North America?

Yes

Sometimes confused with

Salix sericea:
leaf blades 4-15 x 1-4 cm, with only white hairs, and branchlets brittle at the base and snapping cleanly at the junction of yearly growth (vs. S. petiolaris, with leaf blades 2.5-7 x 0.3-2, commonly with red-brown hairs mixed with the white ones, and branchlets flexible at the base, tearing at the junction of yearly growth).

Synonyms

  • Salix gracilis Anderss.
  • Salix gracilis Anderss. var. textoris Fern.
  • Salix petiolaris var. angustifolia Anderss.
  • Salix petiolaris var. gracilis (Anderss.) Anderss.
  • Salix petiolaris var. subsericea Anderss.
  • Salix sericea var. subsericea (Anderss.) Rydb.
  • Salix subsericea (Anderss.) Schneid.

Family

Salicaceae

Genus

Salix