Introductory
SPECIES: Pinus cembroides | Mexican Pinyon 



ABBREVIATION : 
PINCEM

SYNONYMS : 
   Pinus discolor Bailey & Hawksworth [20,76,77]
   Pinus lagunae Passini [3]
   Pinus orizabensis Bailey & Hawksworth [3]
   Pinus remota (Little) Bailey & Hawksworth [28,88,94]


SCS PLANT CODE : 
   PICE


COMMON NAMES : 
   Mexican pinyon
   border pinyon
   papershell pinyon


TAXONOMY : 
The currently accepted scientific name of Mexican pinyon is Pinus
cembroides Zucc.  It is a member of the pine family (Pinaceae)
[16,41,98].  Two varieties in addition to the typical variety are
recognized:  papershell pinyon (P. c. var. remota Little) and Mexican
pinyon (P. c. var. bicolor Little) [44,79,88].

There is taxonomic disagreement about P. cembroides in the strict sense.
Bailey and Hawksworth and others have split P. cembroides infrataxa and
raised them to specific status [3,20,30,77,70,94].  Two subspecies (P.
c. ssp. lagunae D. K. Bailey and P. c. ssp. orizabensis D. K. Bailey)
beside the typical subspecies of P. cembroides were recognized; however,
recently each was raised to specific status [3,70].  The two varieties,
P. c. var. remota and P. c. var. bicolor, were synonomized to P. remota
(Little) Bailey & Hawksworth and P. discolor Bailey & Hawksworth (border
pinyon), respectively [20,30,47,77,94].  All names are currently used in
the literature.

Bailey and Hawksworth relegated P. c. var. bicolor to synonomy with P.
discolor based on differences in flowering times, bark color, needle
color and number, and two monoterpene compounds [70].  Variation in
flowering time and needle number throughout the revised range of P.
cembroides is inclusive of P. discolor characters [1,16].  Therefore,
this writeup considers P. cembroides in the broad sense.  For readers
who support the realignment, studies concerning United States
populations of P. cembroides may be interpreted as P. discolor [29,57,76].

Hybrids occur between Mexican pinyon and true pinyon (P. edulis) where
their ranges overlap [29].


LIFE FORM : 
Tree

FEDERAL LEGAL STATUS : 
No special status

OTHER STATUS : 



COMPILED BY AND DATE : 
Diane S. Pavek, April 1994


LAST REVISED BY AND DATE : 
NO-ENTRY


AUTHORSHIP AND CITATION : 
Pavek, Diane S. 1994. Pinus cembroides. In: Remainder of Citation

Related categories for Species: Pinus cembroides | Mexican Pinyon