The Butternut (Juglans cinerea), also called gray walnut, or white walnut Graunuss is a North American deciduous tree species from the genus of the walnuts (Juglans) in the family of the walnut family (Juglandaceae).
The butternut is a deciduous tree 12-18 m height, trunk diameter 30-60 cm and nearly horizontal branches spread wide. The expansive crown is irregularly rounded. The trees grow fast, but are rarely more than 75 years. The bark is ash-gray to gray brown. The 3.5 to 12 cm long stalked leaves are 30-60 cm long, odd pinnate, with seven rare, usually eleven to 17 leaflets. The sessile leaflets are oblong lanceolate hairy with different upper and lower surfaces. They are usually 5-11 (2.5 to 17.5) cm long and 1.5 to 6.5 cm wide. The edge of the leaflet is cut sharply. Young branches and stems are covered with sticky hairs.
The butternut is rounded (not flattened). The male flowers are in thick, walzlichen 6-14 cm long catkins. The male flowers contain 7-15 stamens. The pollen sacs are 0.8 to 1.2 mm in size. The female flowers have red scars. The flowering period extends from April to May
Also sticky and covered their hair long, pointed, very rough and pitted nuts, which are about 4 cm to 8 large (ie in about a protracted peach pit are the same). They contain a small, walnut after tasting and slightly oily core. The core shell is very hard, with about eight main irregular furrows.
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