Quercus john-tuckeri
| Tucker's oak | |
|---|---|
 | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Fagales |
| Family: | Fagaceae |
| Genus: | Quercus |
| Species: | Q. john-tuckeri |
| Binomial name | |
| Quercus john-tuckeri Nixon & C.H.Mull. | |
Quercus john-tuckeri is a species of oak known by the common name Tucker oak, or Tucker's oak. Previously known as Quercus turbinella ssp. californica, it was elevated to species status in 1994.[1] It is endemic to California, where it grows in the chaparral and oak woodlands of mountain slopes in the Transverse Ranges, the southernmost Central Coast Ranges, and the margins of the Mojave Desert. The species is named after John M. Tucker, professor of botany (1947 - 1986) at the University of California at Davis, specialist in Quercus.
Description
Quercus john-tuckeri is a bushy shrub growing 2 to 5 meters in maximum height, sometimes becoming treelike, exceeding six meters. The branches are gray or brown, the twigs coated in short woolly fibers when new and becoming scaly with age. The evergreen leaves are leathery and thick, sometimes brittle. They are gray-green in color, the lower surface slightly paler. The undersides are hairy, the upper surfaces somewhat less so. The leaf blade is roughly oval, spine-toothed, and less than 4 centimeters long. The fruit is an acorn with a thin cap 1 to 1.5 centimeters wide and a nut 2 to 3 centimeters long.
References
- ↑ Nixon, K. C. and C. H. Muller. (1994). New names in California oaks. Novon 4:4 391-93.
External links
- Jepson Manual Treatment - Quercus john-tuckeri
- USDA Plants Profile; Quercus john-tuckeri
- Flora of North America; Quercus john-tuckeri
- Quercus john-tuckeri - Photo gallery