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. 1994
Synonyms[1]
  • Quercus turbinella subsp. californica Tucker 1952, not Quercus californica (Torr.) Cooper 1859
  • Quercus turbinella var. californica (Tucker) L.D.Benson

Quercus john-tuckeri is a North American species of oak known by the common name Tucker oak, or Tucker's oak.[2] It is endemic to California, where it grows in the chaparral and oak woodlands of mountain slopes in the western Transverse Ranges, the southernmost Central Coast Ranges, and the margins of the Mojave Desert.[3] The species is named after John M. Tucker, professor of botany (1947-1986) at the University of California at Davis, specialist in Quercus. [2]

Description

Quercus john-tuckeri is a bushy shrub growing up to 2 to 5 meters (80-200 inches or 6.7-16.7 feet) in height, sometimes becoming treelike, exceeding six meters (20 feet). 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, 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 (1.6 inches)long. The fruit is an acorn with a thin cap 1 to 1.5 centimeters (0.4-0.6 inch) wide and a nut 2 to 3 centimeters (0.8-1.2 inches) long.[4]

References

  1. ↑ The Plant List, Quercus john-tuckeri Nixon & C.H.Müll.
  2. 1 2 Nixon, K. C. and C. H. Muller. (1994). New names in California oaks. Novon 4:4 391-93.
  3. ↑ Calflora taxon report, University of California, Quercus john-tuckeri K. Nixon & C.H. Muller, Tucker oak, Tucker's oak
  4. ↑ Flora of North America, Quercus john-tuckeri Nixon & C. H. Muller, 1994. Tucker oak, desert scrub oak

External links

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