Juglans major
| Juglans major | |
|---|---|
 | |
| Juglans major Morton Arboretum acc. 614-47*1 | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Fagales |
| Family: | Juglandaceae |
| Subfamily: | Juglandoideae |
| Tribe: | Juglandeae |
| Subtribe: | Juglandinae |
| Genus: | Juglans |
| Section: | Rhysocaryon |
| Species: | J. major |
| Binomial name | |
| Juglans major (Torr.) A. Heller | |
 | |
| Natural range of Juglans major | |
| Synonyms[1][2] | |
| |
Juglans major (literally, the larger walnut) is a walnut tree which grows to 50 ft tall (15 m) with a DBH of up to 2 feet (0.61 m) at elevations of 1000–7000 ft in Texas, Oklahoma, New Mexico, Arizona, and Utah.[3] It also occurs in Mexico as far south as Guerrero.[4] Common names include Arizona walnut, Arizona black walnut (as it belongs to the "black walnuts" section Juglans sect. Rhysocaryon), and the generic Spanish term for walnuts nogal.
Description
In moister areas, the tree features a single, stout trunk; there are usually several slender trunks in drier situations.[5] The 8–14 in long pinnately compound leaves bear 9–15 lanceolate leaflets, 3/8–11/4 in wide by 2–4 in long. The small nut has a thick shell with deep grooves enclosing an oily, edible seed.[6][7]
Where the range of J. major overlaps that of J. microcarpa, the two interbreed, producing many intermediate forms.[8][9]
References
- ↑ Tropicos
- ↑ The Plant List
- ↑ http://plants.usda.gov/java/profile?symbol=JUMA
- ↑ Laferriere, J.E. 1993. Juglandaceae, Walnut Family. Journal of the Arizona-Nevada Academy of Science 27:219.
- ↑ Kershner, Mathews, Nelson, and Spellenberg, National Wildlife Federation Field Guide to Trees of North America Sterling Publishing Co., Inc, New York. © 2008 by Chanticleer Press, Inc. p. 228.
- ↑ Heller, Amos Arthur. Muhlenbergia; a journal of botany 1(4): 50. 1904.
- ↑ Torrey, John. Report of an Expedition down to the Zuni and Colorado Rivers 171, pl. 16. 1853.
- ↑ Vines, Robert A. 1960. Trees, shrubs, and woody vines of the Southwest. Austin, TX: University of Texas Press. 1104 p
- ↑ Powell, A. Michael. 1988. Trees & shrubs of Trans-Pecos Texas including Big Bend and Guadalupe Mountains National Parks. Big Bend National Park, TX: Big Bend Natural History Association. 536 p.
External links
| External identifiers for Juglans major | |
|---|---|
| Encyclopedia of Life | 594768 |
| ITIS | 19252 |
| NCBI | 91217 |
| Also found in: Wikispecies | |