Introductory
SPECIES: Alnus rugosa | Speckled Alder 



ABBREVIATION : 
ALNRUG

SYNONYMS : 
   Betula alnus (rugosa) Du Rois
   Betula alnus (Du Rois) Ehrh.
   Alnus incana B. americana Regel
   Alnus incana (L.) Moench ssp. rugosa (Du Rois) Clausen
   Alnus americana (Regel) Czerp.
   Alnus serrulata Willd.


SCS PLANT CODE : 
   ALRU3


COMMON NAMES : 
   speckled alder
   tag alder
   gray alder
   hoary alder
   hazel alder
   European speckled alder
   mountain alder


TAXONOMY : 
The currently accepted scientific name for speckled alder is
Alnus rugosa (Du Rois) Spreng.[49,55].

Alnus rugosa (Betulaceae) [55] was formerly included in the Eurasian
species Alnus incana (L.) Moench until Fernald showed it to be a
distinct species.  The name A. rugosa was formerly applied to the
species now designated as A. serrulata (Ait.) Willd., witch hazel [50].

Recognized varieties are:
 
        var. rugosa:    more northern distribution, leaves green
                        underneath

        var. americana (Regel) Fern.:  more southern distribution,
                        leaves glaucous or whitened underneath
                        [48,50,60]




LIFE FORM : 
Tree, Shrub

FEDERAL LEGAL STATUS : 
No special status

OTHER STATUS : 
NO-ENTRY


COMPILED BY AND DATE : 
Timothy R. Van Deelen, June 1991


LAST REVISED BY AND DATE : 
NO-ENTRY


AUTHORSHIP AND CITATION : 
Van Deelen, Timothy R. 1991. Alnus rugosa. In: Remainder of Citation

Related categories for Species: Alnus rugosa | Speckled Alder