Family Juglandaceae - Walnut & Hickory
The Walnut family is a large group of deciduous, aromatic trees. There are about 50 species
worldwide, 17 in North America, including
some of our most important timber and nut trees.
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Butternuts & Foliage
Butternuts & Foliage
Members of the walnut family have large aromatic leaves. The leaves are pinnately compound, or ternate, and usually 20-100 cm long. The trees are wind-pollinated, the flowers usually arranged in catkins. Hickory nuts (Carya) and Walnuts (Juglans) in the Juglandaceae family grow within an outer husk; these fruits are technically drupes or drupaceous nuts, and thus not true botanical nuts.

There are eight genera in the family, including the commercially important nut-producing trees: walnut (Juglans), pecan (Carya illinoinensis), and hickory (Carya). The Persian walnut (Juglans regia) is one of the major nut crops of the world. Walnut and hickory are also valuable timber trees. Hickory wood has long been prized for tool handles and other applications for a hard, tough wood.

The 7th President of the United States, Andrew Jackson, was affectionately known as "Old Hickory," likening the strength and toughness of his agressive personality to hickory wood. Jackson was seen as a great General and  military commander, primarily for his defeat of the British Expeditionary Force at the battle of New Orleans in 1815.

He was also a rich slaveowner and an enforcer of the Indian Removal Act which forced hundreds of thousands of Native Americans to relenquish their lands and decamp to the Indian Territory (now the State of Oklahoma). Whatta guy.


Shellbark Hickory
Carya laciniosa
Shagbark Hickory
Shagbark Hickory
Carya ovata
Pecan Tree
Pecan
Carya illionensis
Bitternut Hickory
Bitternut Hickory
Carya cordiformis
Chinese Wingnut
Chinese Wingnut
Pterocarya stenoptera
Black Walnut
Black Walnut
Juglans nigra
Japanese Walnut
Japanese Walnut
Juglans ailantifolia
Arizona Walnut
Arizona Walnut
Juglans major
Cutleaf Black Walnut
Cutleaf Black Walnut
J. nigra 'laciniata'
Little Walnut
Little Walnut
Juglans microcarpa
Scientists at the National Center for Atmospheric Research (NCAR) at Boulder, Colorado, have discovered, by accident, Walnut trees may get "headaches." As reported in the scientific journal Biogeoscience, instruments set up near a grove of walnut for monitoring air pollution showed that at certain times, the trees emitted methyl salicilate, a form of acteylsalicylic acid, or common aspirin.

These emissions corresponded periods of prolonged droughts or large temperature fluctuations, stressful events for any type of plants, but for trees in particular. The scientists believe the aspirin-like chemicals trigger the production of proteins that boost the tree's immune system to help ward off disease.

Butternuts and foliage
Butternut - Juglans cinerea
Hickory - Carya sp.
Hickory - Carya sp.
Arizona Walnut - Juglans major05/14/2015
Bitternut Hickory - Carya cordiformis05/14/2015
Black Walnut Tree - Juglans nigra05/14/2015
Butternut Tree - Juglans cinerea05/14/2015
Chinese Wingnut Tree - Pterocarya stenoptera05/14/2015
Cutleaf Black Walnut - Juglans nigra "laciniata"05/14/2015
Family Juglandaceae - Nut Trees; Walnut, Hickory, Butternut, Pecan05/14/2015
Flowering Plants Index05/14/2015
Hickory - Carya sp.05/14/2015
Japanese Walnut - Juglans ailantifolia05/14/2015
Little Walnut - Juglans microcarpa05/14/2015
Pecan - Carya illinoinensis05/14/2015
Shagbark Hickory Tree - Carya ovata05/14/2015
Shellbark Hickory - Carya laciniosa05/14/2015
Tree Encyclopedia05/14/2015
Tree Encyclopedia for Mobile02/10/2015
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