Sour Gum or Black Gum

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Sour Gum or Black Gum. Nyssa sylvatica Marsh. Kingdom- Plantae (plant) Subkingdom- Trachebionta (vascular) Superdivision-Spermatophya (seed) Division- Magnoliophyta (flowering) Class- Magnoliopsida ( dicotyledons ) Subclass- Rosidae Order- Cornales Family- Cornaceae (dogwood) - PowerPoint PPT Presentation


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Sour Gum or Black GumNyssa sylvatica MarshKingdom-Plantae (plant)Subkingdom-Trachebionta (vascular)Superdivision-Spermatophya (seed)Division-Magnoliophyta (flowering)Class-Magnoliopsida (dicotyledons)Subclass-RosidaeOrder-CornalesFamily-Cornaceae (dogwood)Genus-Nyssa L. (tupelo)Species-N. sylvatica (black gum)Name- Nyssa sylvatica Marsh

Shape, Form, Type

Slow growing, deciduous tree in low wet lands.30 to 50 tall.20 to 30 wide.Pyramid looking in youth.Some horizontal branches have little support.

fig. 1fig. 2Bark

Dark grayish brown in color.Block-like ridges occurring on the bark.

fig. 3fig. 4TwigYoung twigs are reddish brown but become light gray by the second growing season.Branches grow many twigs as they get older an get more spur shoots.

fig. 5LeafAlternate leaf arrangement.Simple, oval shaped leaves.3 to 6 long.1.5 to 3 wide.

In summer the foliage is dark green.

In autumn leaves change from yellow or orange to red or purple.

fig. 6fig. 7Bud

Buds are superposed or terminal.Can be brown, red, or a mixture of the two.3-6 mm long.Oval shaped, either blunt or sharp.fig. 8Flower

The tree flowers between March thru June. Small, greenish white flowers that can be male, female, or both.fig. 9Fruit

The fruit ripens in late September.The fruit comes from female trees only.Bluish-black and about half an inch long.Eaten by birds and squirrels.fig. 10Habitat and Range

Native to the Northeast US down to Florida, as far west as Texas. North to one province of Canada. Found in bogs, marshes, and wetlands in low or high areas.fig. 11UsesThe Sour Gum is commonly used as a shade tree or appreciated for its fall foliage. Its flowers arent especially ornamental.They are fire resistant.

fig. 12ResourcesFigure referencefig. 1-Tree. (n.d.). Retrieved from fig. 2-Black and white tree. (n.d.). Retrieved from fig. 3-Tree bark. (2001). Retrieved from 4-Tree trunk. (2001). Retrieved from fig. 5-Twig. (2001). Retrieved from,fig. 6-Leaf. (2001). Retrieved from fig. 7-Leaves. (n.d.). Retrieved from fig. 8-Bud. (2001). Retrieved from,fig. 9-Flower. (2001). Retrieved from fig. 10-Fruit. (2001). Retrieved from fig. 11-Map. (2010, May 19). Retrieved from fig. 12-Leaves. (2005, March 15). Retrieved from All references found June 21, 201012Works refenced-Missouri botanical garden. (2010). Retrieved from -Evans, Erv. (n.d.). Nc state university. Retrieved from -Nyssa sylvatica. (n.d.). Retrieved from plant database. (2001). Retrieved from -Usda plant profile. (2005, may 15). Retrieved from

All works referenced found on June 21, 2010