Juglans nigra
Summary
| Resource Type | Organism |
|---|---|
| Abbreviation | J. nigra |
| Genus | Juglans |
| Species | nigra |
| Common Name | Black Walnut |
| Organism Image |  |
| Cross Reference | |
| Description | Order: Fagales
Family: Juglandaceae
Chromosome Number: 2n=32 1
Juglans nigra, commonly called black walnut, is a large deciduous tree typically growing 75-100’ (less frequently to 125’) tall with and an oval to rounded crown. Mature trees characteristically have long trunks, often with an absence of lower branching. Fissured, sharply ridged, dark gray-black bark forms diamond patterns. Black walnut is native from Massachusetts through southern Ontario to South Dakota south to Florida and Texas. Yellow green monoecious flowers appear in late spring (May-June), the male flowers in drooping hairy catkins and the female flowers in short terminal spikes. Female flowers give way to edible nuts, each being encased in a yellow-green husk. Credits: Missouri Botanical Garden
Image used courtesy of Paul Wray, Iowa State University, Bugwood.org
licensed under a Creative Commons Attribution-Noncommercial 3.0 License. |
