DISTRIBUTION AND OCCURRENCE
SPECIES: Mahonia trifoliolata | Agarito 



GENERAL DISTRIBUTION : 
Agarito grows throughout most of Texas except for the eastern and
southeastern portions of the state.  It extends westward into New Mexico
and Arizona and southward into Mexico [52].  The variety trifoliolata
grows only in Texas, south of Austin to Corpus Christi.  The variety
glauca occurs from west Texas through New Mexico into Arizona and Mexico
[1].


ECOSYSTEMS : 
   FRES15  Oak - hickory
   FRES30  Desert shrub
   FRES31  Shinnery
   FRES32  Texas savanna
   FRES33  Southwestern shrubsteppe
   FRES34  Chaparral - mountain shrub
   FRES35  Pinyon - juniper
   FRES38  Plains grasslands
   FRES39  Prairie
   FRES40  Desert grasslands


STATES : 
     AZ  NM  TX  MEXICO


ADMINISTRATIVE UNITS : 
     AMIS  BIBE  CACA  GUMO


BLM PHYSIOGRAPHIC REGIONS : 
    7  Lower Basin and Range
   13  Rocky Mountain Piedmont
   14  Great Plains


KUCHLER PLANT ASSOCIATIONS : 
   K031  Oak - juniper woodlands
   K041  Creosotebush
   K044  Creosotebush - tarbush
   K045  Ceniza shrub
   K054  Grama - tobosa prairie
   K059  Trans-Pecos shrub savanna
   K060  Mesquite savanna
   K071  Shinnery
   K084  Cross Timbers
   K085  Mesquite - buffalograss
   K086  Juniper - oak savanna
   K087  Mesquite - oak savanna


SAF COVER TYPES : 
    66  Ashe juniper - redberry (Pinchot) juniper
    67  Mohrs ("shin") oak
    68  Mesquite
   239  Pinyon - juniper
   242  Mesquite


SRM (RANGELAND) COVER TYPES : 
NO-ENTRY


HABITAT TYPES AND PLANT COMMUNITIES : 
Agarito grows as a dominant or codominant in a number of desert shrub
and grassland communities.  It is on lands that have changed from mixed
prairie to open scrub oak-juniper (Quercus-Juniperus spp.) woodlands
[42] and where honey mesquite (Prosopis glandulosa)) is expanding its
range in Texas savannas [2].  It is also a component of south Texas and
Arizona chaparral, semiarid Texas grasslands, and pinyon (Pinus
spp.)-juniper woodlands [9,29,39].  Common codominants include
creosotebush (Larrea tridentata), tarbush (Flourensia cernua),
lecheguilla (Agave lechuguilla), juniper, sotol (Dasylirion spp.), yucca
(Yucca spp.), and black grama (Bouteloua eriopoda).

Agarito has been listed as a dominant in the following community
type classification:

Natural terrestrial communites of Brewster County, Texas [21]

Plant associates:  Common associates of agarito in bottomland
communities include little walnut (Juglans microcarpa), netleaf
hackberry (Celtis reticulata), oneseed juniper (J. monosperma),
littleleaf sumac (Rhus microphylla), and lotebush condalia (Condalia
obovata) [20].  Pungent oak (Quercus pungens), live oak (Q. virginiana),
mesquite, sugarberry (Celtis laevigata), Texas persimmon (Diospyros
texana), spiny hackberry (Celtis pallida), curly mesquite (Hilaria
belangeri), Texas needlegrass (Stipa leucotricha), grama (Bouteloua
spp.), and lotebush (Ziziphus obtusifolia) occur with agarito in scrub
oak-juniper woodlands and Texas savannas [2,6,42].  Ashe juniper (J.
ashei) and redberry juniper are common overstory dominants [39,42].  In
chaparral communities, honey mesquite, curly mesquite, acacia (Acacia
spp.), threeawn (Aristida spp.)  and buffalograss (Buchloe dactyloides)
are common associates [8].

Related categories for Species: Mahonia trifoliolata | Agarito