Salix pyrifolia — balsam willow

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

  Superposed buds

  there are no superposed buds on the branch

• Flowers

  Anther color

  the anthers show no hint of a pink, reddish or purplish tint

  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 upper side of leaf blade

  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 cordate (heart-shaped, with rounded lobes)
  • the base of the leaf blade is cuneate (wedge-shaped, tapers to the base with relatively straight, converging edges), or narrow
  • the base of the leaf blade is rounded

  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 hairs

  • at least some of the hairs on the leaf blade have glands at their tips
  • the hairs on the leaf blade are different from the choices given

  Leaf blade length

  30–103 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 oblong (rectangular but with rounded ends)

  Leaf blade texture

  • the leaf blade is herbaceous (has a leafy texture)
  • the leaf blade is membranaceous (thin, flexible, almost translucent)

  Leaf blade translucent dots

  there are no translucent dots on the leaf blade

  Leaf blade width

  19–40 mm

  Leaf duration

  the leaves drop off in winter (or they wither but persist on the plant)

  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 teeth

  • the edge of the leaf blade is entire (has no teeth or lobes)
  • the leaf blade margin is crenate (with rounded teeth) or crenulate (with tiny, rounded teeth)
  • the leaf blade margin is serrate (with forward-pointing) or dentate (with outward-pointing) with medium-sized to coarse teeth
  • 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

• Place

  Habitat

  wetlands

  New England state

  • Maine
  • New Hampshire
  • Vermont

  Specific habitat

  • bogs
  • fens
  • man-made or disturbed habitats
  • shores of rivers or lakes
  • swamps

• Scent

  Plant odor

  • the plant does not have much of an odor, or it has an unpleasant or repellant odor
  • the plant has a pleasantly aromatic 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 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

  Pith shape

  the outline of the pith in a twig is roughly round

  Twig papillae (Vaccinium species only)

  NA

  Twig winter color

  • brown
  • 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

From Flora Novae Angliae dichotomous key