Introductory
SPECIES: Quercus lobata | Valley Oak 



ABBREVIATION : 
QUELOB

SYNONYMS : 
NO-ENTRY


SCS PLANT CODE : 
   QULO


COMMON NAMES : 
   valley oak
   valley white oak
   California white oak
   water oak
   weeping oak
   white oak
   roble


TAXONOMY : 
The currently accepted scientific name of valley oak is Quercus lobata
Nee. in the subgenus Quercus or white oak [46,53,72].  Recognized
varieties are as follows [53]:

        Q. lobata var. lobata
        Q. lobata var. agillara Jeps.
        Q. lobata var. insperata Jeps.
        Q. lobata var. turbinata Jeps.
        Q. lobata var. walteri Jeps.

Valley oak hybridizes with the following species:

        x Q. douglasii (blue oak): Q. Xjolonensis Sargent [41,46]
        x Q. turbinella ssp. californica (desert scrub oak): Q. Xmunzii
          Tucker [41,46]
        x Q. dumosa (California scrub oak): Q. Xtowneii Palmer [46,72]
        x Q. engelmannii (Engelmann oak] [72]
        x Q. garryana (Oregon white oak) [72]
 
MacDonald oak (Q. macdonalii), found on the Channel Islands, is
recognized by some authorities as a distinct species resulting from
hybridization between valley and California scrub oak [53,72,73].


LIFE FORM : 
Tree

FEDERAL LEGAL STATUS : 
No special status

OTHER STATUS : 
Valley oak in the Santa Monica Mountains National Recreation Area is
reproducing poorly and is targeted for a long-term monitoring program to
access the health of valley oak populations and communities [20].


COMPILED BY AND DATE : 
Janet L. Howard, August 1992


LAST REVISED BY AND DATE : 
NO-ENTRY


AUTHORSHIP AND CITATION : 
Howard, Janet L. 1992. Quercus lobata. In: Remainder of Citation

Related categories for Species: Quercus lobata | Valley Oak