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Prunus susquehanae — Appalachian sand plum

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Facts

Appalachian sand plum is a small native shrub ( to 1 m or 3 feet tall), that inhabits sandy, barren areas. Its leaves are silvery blue-green on the underside. The flowers are visited by numerous species of bees, and the fruits are consumed by mice, fox, coyote, birds, and possibly even box turtles (common visitors to its habitat).

Habitat

Anthropogenic (man-made or disturbed habitats), coastal beaches (sea beaches), meadows and fields, ridges or ledges, sandplains and barrens

New England distribution

Adapted from BONAP data

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North America distribution

Adapted from BONAP data

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Characteristics

Habitat
terrestrial
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 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
30–70 mm
Leaf blade width
15–30 mm
Leaf stalk
the leaves have leaf stalks
Fruit type (general)
the fruit is fleshy
Bark texture
the bark of an adult plant is thin and smooth
Twig winter color
  • brown
  • gray
  • purple
  • red
Bud scale number
there are three or more scales on the winter bud, and they overlap like shingles, with one edge covered and the other edge exposed
Show all characteristics

  • Buds or leaf scars

    Bud scale number
    there are three or more scales on the winter bud, and they overlap like shingles, with one edge covered and the other edge exposed
    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

    Carpels fused
    the carpel is solitary or (if 2 or more) the carpels are not fused to one another
    Enlarged sterile flowers
    there are no enlarged sterile flowers on the plant
    Flower petal color
    white
    Flower symmetry
    there are two or more ways to evenly divide the flower (the flower is radially symmetrical)
    Hairs on ovary (Amelanchier)
    NA
    Hypanthium present
    the flower has a hypanthium
    Inflorescence type
    the inflorescence is a fascicle (compact cluster of 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 includes two cycles of petal- or sepal-like structures
    Petal appearance
    the petals are thin and delicate, and pigmented (colored other than green or brown)
    Petal fusion
    the perianth parts are separate
    Sepal cilia (Ilex)
    NA
    Stamen number
    13 or more

  • Fruits or seeds

    Berry color
    • black
    • purple
    Fruit tissue origin
    the hypanthium of the flower becomes part of the fruit
    Fruit type (general)
    the fruit is fleshy
    Fruit type (specific)
    the fruit is a drupe (fleshy, with a firm inner ovary wall that encloses a single seed)
    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 cuneate (wedge-shaped, tapers to the base with relatively straight, converging edges), or narrow
    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 teeth
    Leaf blade edges (Acer)
    NA
    Leaf blade flatness
    the leaf is flat (planar) at the edges
    Leaf blade hairs
    NA
    Leaf blade length
    30–70 mm
    Leaf blade scales
    there are no scales on the leaf blades
    Leaf blade shape
    • the leaf blade is oblong (rectangular but with rounded ends)
    • the leaf blade is obovate (egg-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 width
    15–30 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 leaf blade margin is serrate (with forward-pointing) or dentate (with outward-pointing) with medium-sized to coarse 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
    terrestrial
    New England state
    • Connecticut
    • Maine
    • Massachusetts
    • New Hampshire
    • Rhode Island
    • Vermont
    Specific habitat
    • man-made or disturbed habitats
    • meadows or fields
    • ridges or ledges
    • sandplains or barrens
    • sea beaches

  • 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)
    NA
    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
    • gray
    • purple
    • red
    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

Not classified

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.

Massachusetts
fairly widespread (uncertain) (S-rank: S4?)
New Hampshire
uncommon (S-rank: S3), W (code: W)
Rhode Island
extremely rare (S-rank: S1), concern (code: C)
Vermont
extremely rare (S-rank: S1), endangered (code: E)

From Flora Novae Angliae dichotomous key

18.  Prunus susquehanae hort. ex Willd. N

Appalachian sand plum. Cerasus susquehanae (hort. ex Willd.) Sweet; Prunus cuneata Raf.; 
 P. pumila L. var. cuneata (Raf.) Bailey; P. pumila L. var. susquehanae (hort. ex Willd.) Jaeger. 
• CT, MA, ME, NH, RI, VT; absent from much of central and eastern ME and eastern VT. Sandy fields, clearings, roadsides, beaches, and barrens, ridges.

Native to North America?

Yes

Sometimes confused with

Prunus pumila:
branchlets glabrous, leaf blades narrow-oblanceolate, 5–18 mm wide, 3–6 times as long as wide, scarcely glaucous on the abaxial surface, and plants depressed, mat-forming, with short, erect branches commonly 1–6 dm tall (vs. P. susquehanae, with branchlets minutely pubescent, leaf blades oblong to oblong-obovate, 15–30 mm wide, 2–3 times as long as wide, glaucous on the abaxial surface, and plants ascending to erect, commonly 3–10 dm tall).

Synonyms

  • Cerasus susquehanae (hort. ex Willd.) Sweet
  • Prunus cuneata Raf.
  • Prunus pumila L. var. cuneata (Raf.) Bailey
  • Prunus pumila L. var. susquehanae (hort. ex Willd.) Jaeger.

Family

Rosaceae

Genus

Prunus