Juglans major
| Juglans major | |
|---|---|
| |
| At Morton Arboretum, Illinois | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fagales |
| Family: | Juglandaceae |
| Genus: | Juglans |
| Section: | Juglans sect. Rhysocaryon |
| Species: | J. major
|
| Binomial name | |
| Juglans major | |
| |
| Natural range of Juglans major | |
| Synonyms[2][3] | |
| |
Juglans major (literally, the larger walnut), also known as Arizona walnut,[1] is a walnut tree which grows to 50 ft tall (15 m) with a DBH of up to 0.61 metres (2 ft) at elevations of 300–2,130 m (1,000–7,000 ft) in Texas, Oklahoma, New Mexico, Arizona, and Utah.[4] It also occurs in Mexico as far south as Guerrero.[5] Common names include Arizona black walnut (as it belongs to the "black walnuts" section Juglans sect. Rhysocaryon), and the Spanish name nogal cimarrón (cimarron walnut).
Description[edit]
In moister areas, the tree features a single, stout trunk; there are usually several slender trunks in drier situations.[6] The 8–14 in long pinnately compound leaves bear 9–15 lanceolate leaflets, 19–32 mm (.75–1.25 in) wide by 51–102 mm (2–4 in) long. The small nut has a thick shell with deep grooves enclosing an oily, edible seed.[7][8]
Where the range of J. major overlaps that of J. microcarpa, the two interbreed, producing many intermediate forms.[9][10]
References[edit]
- ^ a b Barstow, M.; Stritch, L. (2019). "Juglans major". IUCN Red List of Threatened Species. 2019: e.T66813121A66813150. doi:10.2305/IUCN.UK.2019-1.RLTS.T66813121A66813150.en. Retrieved 19 November 2021.
- ^ Tropicos
- ^ The Plant List
- ^ "USDA Plants Database".
- ^ Laferriere, J.E. (1993). "Juglandaceae, Walnut Family". Journal of the Arizona-Nevada Academy of Science 27:219.
- ^ Kershner, Mathews, Nelson, and Spellenberg (2008). National Wildlife Federation Field Guide to Trees of North America Inc, New York: Sterling Publishing Co., p. 228.
- ^ Heller, Amos Arthur. (1909). Muhlenbergia; a Journal of Botany 1(4): 50.
- ^ Torrey, John. (1853). Report of an Expedition down to the Zuni and Colorado Rivers 171, pl. 16.
- ^ 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[edit]
Data related to Juglans major at Wikispecies