Wildlife, Animals, and Plants
DISTRIBUTION AND OCCURRENCE
SPECIES: Cercidium microphyllum | Yellow Paloverde
GENERAL DISTRIBUTION :
Yellow paloverde is distributed through central and southwestern Arizona
[16,31,43,88]. A few populations occur in southeastern California near
the Colorado River in the Whipple Mountains [3,10,26]. The range of
yellow paloverde extends southward through Sonora and Baja California,
FRES30 Desert shrub
FRES40 Desert grasslands
AZ CA MEXICO
ADMINISTRATIVE UNITS :
DEVA LAME ORPI SAGU
BLM PHYSIOGRAPHIC REGIONS :
7 Lower Basin and Range
KUCHLER PLANT ASSOCIATIONS :
K042 Creosotebush - bursage
K043 Paloverde - cactus shrub
SAF COVER TYPES :
SRM (RANGELAND) COVER TYPES :
HABITAT TYPES AND PLANT COMMUNITIES :
Yellow paloverde is an indicator species of the Sonoran Desert floristic
region . It is a dominant species in the Arizona upland subdivision
of the Sonoran Desert [9,41,43,93]. Codominant species include
creosotebush (Larrea tridentata), triangle bursage (Ambrosia deltoidea),
brittle brush (Encelia farinosa), ocotillo (Fouqueria splendens), and
Berlandier wolfberry (Lycium belandieri) . This assemblage is also
called the paloverde, bursage (Ambrosia spp.) desert scrub community
type. It grades into spinose suffrutescent desert scrub .
A major climax association found on bajadas and rocky slopes throughout
the Sonoran Desert is the paloverde/saguaro (Carnegiea gigantea)
association [5,9,42,89,102]. This association grades into adjacent
semidesert grasslands and interior chaparral [53,54].
Yellow paloverde is the principal species in the paloverde series
[51,61]. This is also called the paloverde-cacti-mixed scrub series and
paloverde woodland and succulents association [93,103].
Yellow paloverde is a facultative riparian species. It may move into
riparian areas from surrounding desert and upland positions [1,74,83].
Where precipitation is less than 3 inches (7.6 cm) per year, yellow
paloverde is confined to washes and is an obligate riparian species .
Yellow paloverde is listed as a dominant or indicator species in the
(1) A series vegetation classification for Region 3 
(2) A vegetation classification system applied to southern California
(3) Vegetation of the Santa Catalina Mountains, Arizona: a gradient
analysis of the south slope .
Species associated with yellow paloverde but not previously mentioned in
DISTRIBUTION AND OCCURRENCE include white burrobrush (Hymenoclea
salsola), white ratany (Krameria grayi), organpipe cactus
(Lemaireocereus schottii), MacDougal ocotillo (Fouqueria macdougalii),
and heart leatherstem (Jatropha cordata) [25,78,97].
Related categories for Species: Cercidium microphyllum
| Yellow Paloverde