Introductory
SPECIES: Crataegus douglasii | Douglas Hawthorn 



ABBREVIATION : 
CRADOU

SYNONYMS : 
   C. rivularis (Nutt.) Sarg.
   C. suksdorfii (Sarg.)


SCS PLANT CODE : 
   CRDO2


COMMON NAMES : 
   Douglas hawthorn
   black hawthorn
   river hawthorn
   western thornapple


TAXONOMY : 
The currently accepted scientific name of Douglas hawthorn is Crataegus
douglasii (Lindl.) [18].  There are three extant varieties, each
distinguishable by floral parts and geographic location [19]:

                    C. douglasii var. douglasii 
                    C. douglasii var. rivularis
                    C. douglasii var. suksdorfii

C. douglasii var. douglasii and C. douglasii var. rivularis have 10
stamens each and occupy mesic sites in the northern Rocky Mountains.  C.
douglasii var. suksdorfii has 20 stamens and occupies moist sites
generally west of the Cascades.  Current research strongly supports var.
suksdorfii as a distinct species, C. suksdorfii [6].


LIFE FORM : 
Tree, Shrub

FEDERAL LEGAL STATUS : 
No special status

OTHER STATUS : 
NO-ENTRY


COMPILED BY AND DATE : 
R. J. Habeck, December 1991


LAST REVISED BY AND DATE : 
NO-ENTRY


AUTHORSHIP AND CITATION : 
Habeck, R. J. 1991. Crataegus douglasii. In: Remainder of Citation

Related categories for Species: Crataegus douglasii | Douglas Hawthorn