Juglans cinerea
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Juglans cinerea
BUTTERNUT
Juglandaceae
E. North America
Location: map coordinates N-16 (north of Thomasson Building),
N 39°11'10'' W 75°32'39''
Planting history: planted November 2010. Source: Go Native Tree Farm, PA. (Dr. S. Yost, USDA NIFA Capacity Building Grant funds).
Description:
Native species, State Rank S3 (uncommon, but not of conservation concern, yet) in New Castle County piedmont, Delaware
BUTTERNUT
Juglandaceae
E. North America
Location: map coordinates N-16 (north of Thomasson Building),
N 39°11'10'' W 75°32'39''
Planting history: planted November 2010. Source: Go Native Tree Farm, PA. (Dr. S. Yost, USDA NIFA Capacity Building Grant funds).
Description:
- deciduous tree
- etymology: Juglans from the Latin name for Juglans regia (from jovis [Jupiter] and glans [nut]); cinerea = grey (referring to the bark)
- also called white walnut
- leaf compound; leaflets (7) 11-17
- monoecious (separate male and female flowers on same tree); flowers small; male flowers in catkins
- fruits large, more oblong than black walnut; husk greenish-brown; nut ridged and long-pointed; seed edible, sweet; husks and inner bark used for dye (e.g. Civil War uniforms)
- pith chambered
- looks similar to black walnut Juglans nigra, but leaf scar has prominent hairy margin above, end leaflet normally present, and pith dark brown
- allelopathic; contains juglone (as does black walnut), toxic to many other plants
- wood less valuable than black walnut
- many trees have been killed by a fungus disease, butternut decline or butternut canker
Native species, State Rank S3 (uncommon, but not of conservation concern, yet) in New Castle County piedmont, Delaware
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![](http://arboretum.desu.edu/animations/juglans_cinerea.gif)
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