Roundleaf serviceberry

  • Latin name: Amelanchier sanguinea (Pursh) D.C.
  • French name: Amélanchier sanguin
  • Synonym(s): Roundleaf juneberry , New England serviceberry
  • Taxonomic Serial Number: 25119
Description

Leaves

  • Leaf - roundleaf serviceberry

Form

  • Deciduous, alternate, simple
  • Elliptic to round
  • Hairless at maturity
  • Veins tend to be straight and parallel, 10–12 per side

Length

  • 3–7 cm

Margin

  • Coarsely toothed, about 18–20 per side
  • Mostly toothless toward the petiole
  • Each vein ends in a tooth

Petiole

  • Slender

Buds

  • Lateral bud and leaf scar - roundleaf serviceberry

Form

  • Narrowly ovoid
  • Twisted, tapering to a point
  • Pressed tightly against the twig
  • About 5 scales
  • Terminal bud much like the lateral buds
  • Leaf scars with 3 large vein scars

Length

  • 8–12 mm

Twigs

Form

  • Slender
  • Ridges extend down from either side of the leaf scar
  • Pith 5-pointed
  • A neoformed shoot usually develops from one or more leaf axils below a terminal flower cluster

Colour

  • Reddish when young

Flowers

Form

  • Showy; 5 petals
  • In drooping clusters at the tips of new leafy shoots
  • Insect-pollinated

Length

  • Lower stalks longer than the upper ones
  • Clusters 3–8 cm
  • Petals 10–15 mm

Colour

  • White

Structure

  • Synoecious

Floral timing

  • With the unfolding leaves, which are densely hairy at this time

Fruits

  • Fruit cluster - roundleaf serviceberry

Form

  • Berry-like, with 5–10 hard seeds
  • Juicy

Length

  • Stalks 10–30 mm

Width

  • 5–10 mm

Colour

  • Dark purple

Timing

  • Ripening in late July or early August

Seeds

Form

  • Remain viable for some years at near-freezing temperatures
  • Germinate after exposure to moist cool conditions

Seedlings

Form

  • Cotyledons small, leafy
  • Raised above the surface during germination

Bark

Form

  • Smooth, conspicuously marked by a slightly twisted network of darker vertical lines
  • With age becoming rough and scaly

Colour

  • Grey

Size

Height

  • To 10 m

Diameter

  • To 20 cm

Tree form

Forest-grown

Trunk

  • Slender, very little taper

Crown

  • Narrow, irregular

Habitat

Site

  • In the forest understory, at forest edges, on sand plains and rocky outcrops, and along fencerows

Range

Lake Superior eastward

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