DISTRIBUTION AND OCCURRENCE
SPECIES: Pinus engelmannii | Apache Pine 



GENERAL DISTRIBUTION : 
Apache pine has a very limited distribution in the United States.  It
occurs in the Chiricahua, Huachuca, Dragoon, and Santa Rita mountains of
Arizona and in one area of extreme southwestern New Mexico [13,18,34,
42,61].  The main part of its range is in Mexico.  Apache pine occurs
commonly in the Sierra Madre Occidental, extending southward from the
United States border to Zacatecas [14,28,44,45].


ECOSYSTEMS : 
   FRES21  Ponderosa pine
   FRES28  Western hardwoods
   FRES35  Pinyon - juniper


STATES : 
     AZ  NM  MEXICO


ADMINISTRATIVE UNITS : 
     CHIR


BLM PHYSIOGRAPHIC REGIONS : 
    7  Lower Basin and Range


KUCHLER PLANT ASSOCIATIONS : 
   K019  Arizona pine forest 
   K023  Juniper - pinyon woodland
   K031  Oak - juniper woodlands


SAF COVER TYPES : 
   235  Cottonwood - willow
   237  Interior ponderosa pine
   239  Pinyon - juniper
   240  Arizona cypress


SRM (RANGELAND) COVER TYPES : 
NO-ENTRY


HABITAT TYPES AND PLANT COMMUNITIES : 
Apache pine primarily occurs in Madrean pine-oak and oak-pine forests
and woodlands.  Codominant and subdominant species that occur with
Apache pine in these communities are Chihuahua pine (Pinus leiophylla
var.  chihuahuana), Mexican pinyon (P. cembroides), and alligator
juniper (Juniperus deppeana); the understories are predominatly oak
(Quercus spp.) [1,7,11,21,22,35].  The communities may extend upward
into the mixed pine forests [9].

Apache pine forms open stands and is widely scattered in mixed pine
forests with Arizona pine, Chihuahua pine, and southwestern white pine
(P. strobiformis) [2,15,29].

Apache pine is the principal species in the Apache pine series
[1,6,20,39,40].

Scattered Apache pine occur in riparian habitats.  Along streamsides,
Apache pine is a minor species in some stands of Chihuahua pine/pinyon
ricegrass (Piptochaetium fimbriatum) habitat types and is codominant in
Arizona cypress (Cupressus arizonica) types [15,39,41,48].  It is a
minor species in the Arizona sycamore (Platanus wrightii) series and
community types [39,56].

Apache pine is listed as a dominant or indicator species in the
following publications:

(1)  Classification of the forest vegetation on the National Forests of
       Arizona and New Mexico [1]
(2)  Forest and woodland habitat types (plant associations) of Arizona
       south of the Mogollon Rim and southwestern New Mexico [6]
(3)  A digitized computer-compatible classification for natural and
       potential vegetation in the Southwest with particular reference to
       Arizona [11]
(4)  A series vegetation classification for Region 3 [39]
(5)  A forest habitat type classification of southern Arizona and its
       relationship to forests of the Sierra Madre Occidental of Mexico [40].

Species associated with Apache pine but not previously mentioned in
Occurrence and Distribution include Arizona madrone (Arbutus arizonica),
Apache plume (Fallugia paradoxa), western white honeysuckle (Lonicera
albiflora), and slimflower scurfpea (Psoralea tenuiflora) [16,48].

Related categories for Species: Pinus engelmannii | Apache Pine