Dendrologue

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    • Evolution of Trees
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    • Photosynthesis
    • Phloem Signals
    • Resin and Sap Production
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    • Soil Types & Nutrients
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  • Failed comedy career
  • Temporarily Down

American Mountain-Ash
Dogberry
Sorbus americana Marsh.
Sorbier d'Amérique
Size and Form:
Shrubs or very small trees, up to 10 m high.
Trunk is short, with spreading slender branches that form a narrow, open, round-topped crown.
Leaves:
Leaflets are lance-shaped, taper-pointed, 5-8 cm long.
Thin, light green above, paler and hairless beneath.
Narrower than showy mountain-ash.
Buds:
Bud scales are hairless.
Flowers:
Petals are broadest toward the tip, 3-4 mm long.
Flowers appear in May and June, about 1 week earlier than showy mountain-ash.
On hairless stalks, in dense, flattish clusters.
Fruits:
Bright coral-red, 4-6 mm across.
Mature in August; flesh is thin.
Habitat:
Occurs on moist sites bordering swamps, rocky hillsides, and on dry soils.

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Dendrologue

  • Home
  • Citations
  • Tree Anatomy
    • Evolution of Trees
    • Defects
    • Tree Structure & Development
    • Leaf Shapes
    • Tree Trunk
    • Water Storage
    • Morphology
    • Annual Tree Rings
    • Photosynthesis
    • Phloem Signals
    • Resin and Sap Production
    • Carbon Storage and Sequestration
    • Seasonal Clues
  • Forest Ecology
    • Stream Permanency
    • Species That Grow Together
    • Habitat Chart
    • Stilt Rooting
    • Environmental Impact
    • Pollination & Reproduction
    • Forest Layers
    • Fire Adapted Species, East vs West Coast
    • Marcescent species
    • Hawk Stick Nests
  • Remote Sensing
    • Navigation
    • Azimuth
    • BAF
    • GIS (Geographic Information Systems)
  • Landform & Soil/Site
    • Soil Types & Nutrients
    • Topography
  • Failed comedy career
  • Temporarily Down