Tucker's oak
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fagales
Family: Fagaceae
Genus: Quercus
Subgenus: Quercus subg. Quercus
Section: Quercus sect. Quercus
Species:
Q. john-tuckeri
Binomial name
Quercus john-tuckeri
Nixon & C.H.Mull.
Synonyms[2]
  • Quercus turbinella subsp. californica Tucker
  • 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.[3] 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.[4] The species is named after John M. Tucker, professor of botany (1947–1986) at the University of California at Davis, specialist in Quercus. [3]

Description

Quercus john-tuckeri is a bushy shrub growing up to 2 to 5 meters (6+1⁄2 to 16+1⁄2 feet) in height, sometimes becoming treelike, exceeding 6 m (20 ft). 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+1⁄2 inches) long. The fruit is an acorn with a thin cap 1 to 1.5 cm (3⁄8 to 5⁄8 in) wide and a nut 2 to 3 cm (3⁄4 to 1+1⁄8 in) long.[5]

See also

References

  1. ↑ Jerome, D. (2020). "Quercus john-tuckeri". IUCN Red List of Threatened Species. 2020: e.T86583133A171682361. doi:10.2305/IUCN.UK.2020-2.RLTS.T86583133A171682361.en. Retrieved 12 November 2021.
  2. ↑ "Quercus john-tuckeri Nixon & C.H.Müll.". World Checklist of Selected Plant Families. Royal Botanic Gardens, Kew – via The Plant List. Note that this website has been superseded by World Flora Online
  3. 1 2 Nixon, K. C. and C. H. Muller. (1994). New names in California oaks. Novon 4:4 391-93.
  4. ↑ "Quercus john-tuckeri". Calflora. Berkeley, California: The Calflora Database.
  5. ↑ Nixon, Kevin C. (1997). "Quercus john-tuckeri". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 3. New York and Oxford: Oxford University Press – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.


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