Sour gum, Black gum, Tupelo

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Typical fruits from another tree on campus (female tree).

Nyssa sylvatica
SOUR GUM

Nyssaceae
E. North America

Location: map coordinates Q-2 (east of fence around old barn, on Loop Road), N 39°11'10'' W 75°32'49''

Planting history: presently unknown.

Description:
  • deciduous tree
  • etymology: Nyssa from Nyssa a water nymph (because the first Nyssa species described, N. aquatica, grows in swamps); sylvatica = of the woods
  • also called tupelo, black gum
  • leaf egg-shaped, elliptic
  • dioecious or polygamodioecious (male and female flowers mostly on separate trees, but some flowers perfect)
  • fruit drupe (stone fruit); fleshy, dark blue; eaten by wildlife
  • autumn foliage orange/scarlet; one of first trees to turn color in the fall
  • bark dark, deeply checkered
  • pith chambered
  • habitat lowlands; moist woods

Native species, State Rank S5 (very common in Delaware)
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