Quercus × morehus

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Quercus × morehus
Scientific classification
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Q. × morehus
Binomial name
Quercus × morehus
Kellogg
Synonyms

Quercus × moreha Trel.

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Quercus × morehus,[2] Abram's oak in Kellogg's original description[3] (later called oracle oak by Jepson[4]), is a named hybrid between the red oaks Quercus kelloggii (California black oak) and Quercus wislizeni (interior live oak).[5] Originally published as the unique species Quercus morehus by Kellogg,[3] rather than as the hybrid it is called today,[5] this tree is found in California and possibly southern Oregon,[6] USA, usually where the territories of the purported parents overlap.[2]

Because the name Q. × morehus was adopted prior to 1980 while Q. wislizeni and Quercus parvula were still considered conspecific[7] 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.[8]

Quercus × morehus is a hybrid between a deciduous oak and an evergreen oak. Leaves are intermediate in form between Q. kelloggii and Q. wislizeni.[2]

References

  1. Edward L. Greene, Illustrations of West American Oaks, Vols. 1 & 2, Bosqui Engraving and Printing Co., San Francisco (1889-1890)
  2. 2.0 2.1 2.2 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)
  3. 3.0 3.1 Albert 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)
  4. Willis Linn Jepson, A Manual of the Flowering Plants of California, p. 277 (genus Quercus and some other parts 1923, the rest 1925)
  5. 5.0 5.1 Online link to The Jepson Manual eFlora = http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=40652 accessed 01 October 2015
  6. 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 01 October 2015
  7. Kevin C. Nixon and Cornelius H. Muller, “New Names in California Oaks,” Novon, volume 4: pages 391-393 (1994)
  8. A. Keuter, Key to the California Lobatae, ined. (2016)