''Quercus'' ×''morehus'',Carl B. Wolf, “California Plant Notes I, x Quercus morehus,” Occasional Papers, Rancho Santa Ana Botanic Garden of the Native Plants of California, Volume 1 (Number 1): pages 47-52 (1938) Abram's oak in Kellogg's original descriptionAlbert Kellogg, "On a new species of Oak, brought from Clear Lake by Mr. A. A. Veatch," Proceedings of the California Academy of Sciences, series 1, volume 2: page 36 (1863) (later called oracle oak by JepsonWillis Linn Jepson, A Manual of the Flowering Plants of California, p. 277 (genus Quercus and some other parts 1923, the rest 1925)), is a named hybrid between the

red oaks The genus ''Quercus'' contains about 500 species, some of which are listed here. The genus, as is the case with many large genera, is divided into subgenera and sections. Traditionally, the genus ''Quercus'' was divided into the two subgenera ''C ...

Quercus kelloggii ''Quercus kelloggii'', the California black oak, also known as Kellogg oak, is an oak in the red oak section (genus ''Quercus'', section ''Lobatae'', series ''Agrifoliae''), native to western North America. Although genetically separated from the ...

'' (California black oak) and ''

Quercus wislizeni ''Quercus wislizeni'', known by the common name interior live oak, is an evergreen oak, highly variable and often shrubby, found in many areas of California in the United States continuing south into northern Baja California in Mexico. It general ...

'' (interior live oak).Online link to The Jepson Manual eFlora = http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=40652 accessed 1 October 2015 Originally published as the unique species ''Quercus morehus'' by Kellogg, rather than as the hybrid it is called today, this tree is found in the US states of

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

and possibly southern

Oregon Oregon () is a U.S. state, state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington (state), Washington, while the Snake River delineates much of it ...

,Online link to Consortium of Pacific Northwest Herbaria (specimens #1, #4-17, #19-30, #32-34) = http://www.pnwherbaria.org/data/results.php?DisplayAs=WebPage&ExcludeCultivated=Y&GroupBy=ungrouped&SortBy=Year&SortOrder=DESC&SearchAllHerbaria=Y&QueryCount=1&Family1=fagaceae&IncludeSynonyms1=Y&Genus1=quercus&Species1=morehus&Zoom=4&Lat=55&Lng=-135&PolygonCount=0 accessed 1 October 2015 usually where the territories of the purported parents overlap. Because the name ''Q.'' ×''morehus'' was adopted prior to 1980 while ''Q. wislizeni'' and ''

Quercus parvula ''Quercus parvula'', the Santa Cruz Island oak, is an evergreen red oak (Series ''Agrifoliae'', Section '' Lobatae'') found on north-facing Santa Cruz Island slopes and in the California Coast Ranges from Santa Barbara County north to Mendocino C ...

'' were still considered conspecificKevin C. Nixon and Cornelius H. Muller, “New Names in California Oaks,” Novon, volume 4: pages 391-393 (1994) it is often applied not only to trees appearing intermediate in form between ''Q. kelloggii'' and ''Q. wislizeni'' but also those that could be ''Q. kelloggii'' × ''Q. parvula''. Pending formal description the name Q. ×''‘wootteni’'' (Wootten's oak) has been proposed for the California black oak (''Q. kelloggii'') × Shreve oak (''Q. parvula'' var. ''shrevei'') hybrid.Duncan A. Hauser, Al Keuter, John D. McVay, Andrew L. Hipp, and Paul S. Manos, The evolution and diversification of the red oaks of the California Floristic Province (Quercus section Lobatae, series Agrifoliae), American Journal of Botany, October 2017 104:1581-1595 ''Quercus'' ×''morehus'' is a hybrid between a

deciduous In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, aft ...

oak and an

evergreen In botany, an evergreen is a plant which has foliage that remains green and functional through more than one growing season. This also pertains to plants that retain their foliage only in warm climates, and contrasts with deciduous plants, which ...

oak. Leaves are generally deciduous or partially deciduous and intermediate in form between ''Q. kelloggii'' and ''Q. wislizeni''.

References

{{DEFAULTSORT:Quercus x morehus Flora of the West Coast of the United States Natural history of the California chaparral and woodlands morehus Hybrid plants