Utah Valley University Herbarium


Accession # 15265 
Family - UVUAPG III FamilyCronquist FamilyA Utah Flora
Species Larrea tridentata (DC.) Coville
Common name   creosote bush
Oliver Hansen   23  
Coll. Date 15 September 2008 
United States
Washington County
Locality Harrisburg Flat, along Red Cliffs Campground Road, ca. 0.3 road mile W of Harrisburg;
     Elev.: 3017 ft. (920 m.)
Habitat Notes desert shrub community. 
Climate NCDC temperatures, daily high (red), daily average (green) and daily low (blue), from 1970 to 2000 at this location.   NCDC average monthly precipitation from 1970 to 2000 at this location.
Latitude Longitude 37° 12'  23.34" N, 113° 23'  30.06" W
Datum WGS84 
Uncertainty Polygon diameter (with coordinate as origin): GPS
Georef. Notes This coordinate was obtained by a GPS unit and an error estimate was not recorded by the user. However due to the accuracy of most units, a polygon diameter between 25 and 250 meters could reasonably be assumed.


Synonyms recognized by ITIS (bold taxon is currently accepted):

     Larrea tridentata (Sessť & Moc. ex DC.) Coville

     Larrea mexicana Moric.

Common Name(s): creosote bush, creosotebush.

Taxonomic Hierarchy: (ITIS TSN=29051, click for more information and references)

        Kingdom: Plantae
            Subkingdom: Tracheobionta
                Division: Magnoliophyta
                    Class: Magnoliopsida
                        Subclass: Rosidae
                            Order: Sapindales
                                Family: Zygophyllaceae
                                    Genus: Larrea
                                        Species: Larrea tridentata


Images of other samples of the same species:
specimen image: 00154s1.jpg 
specimen image: 02548s1.jpg 
specimen image: 02660s1.jpg 
specimen image: 02894s1.jpg 
specimen image: 02967s1.jpg 
specimen image: 03630s1.jpg 
specimen image: 04044s1.jpg 
specimen image: 04230s1.jpg 
specimen image: 08176s1.jpg 
specimen image: 08307s1.jpg 

Nearby Accessions

Other accessions in the database collected near this one:

Accession Name Dist., dir.
14247 Acamptopappus sphaerocephalus      "goldenhead" 1.5 mi. S
14245 Ambrosia dumosa      "common bur-sage" 1.5 mi. S
08912 Amsinckia intermedia     1.5 mi. NE
04192 Amsinckia tessellata      "bristly fiddleneck" same section
08390 Anemopsis californica      "yerba mansa" 1.3 mi. NE
13188 Astragalus amphioxys  var. amphioxys   "crescent milkvetch" 2 mi. N
13187 Astragalus ampullarioides     2 mi. N
13186 Astragalus flavus  var. higginsii  2 mi. N
12542 Astragalus lentiginosus      "freckled milkvetch" 1.3 mi. N
08907 Astragalus nuttallianus  var. imperfectus   "Mojave small-flowered milkvetch" 1.5 mi. NE
14243 Atriplex canescens  var. canescens   "four-winged saltbush" same section
14242 Atriplex canescens  var. canescens   "four-winged saltbush" same section
14240 Baccharis salicina      "false willow" 1.6 mi. N
05271 Baccharis sergiloides      "desert seep-willow" 1.5 mi. NE
08906 Brickellia longifolia      "long-leaf brickellbush" 1.5 mi. NE
05272 Brickellia longifolia      "long-leaf brickellbush" 1.8 mi. NE
08918 Bromus diandrus      "great brome" 1.5 mi. NE
02982 Chamaesyce fendleri      "Fendler's sandmat" 1 mi. S
15266 Chilopsis linearis      "desert willow" same section
05699 Chrysothamnus paniculatus      "Mojave rabbitbrush" 1.8 mi. NE
12535 Croton californicus      "California croton" 1.3 mi. NE
08913 Croton californicus      "California croton" 1.5 mi. NE
14244 Croton californicus      "California croton" same section
04213 Cymopterus multinervatus      "purple-nerved spring parsley" 1.7 mi. S
13189 Cymopterus purpureus  var. purpureus   "purple spring parsley" 2 mi. N
04217 Dichelostemma pulchellum      "bluedicks" 1.7 mi. S
08914 Encelia frutescens  var. virginensis   "Virgin River brittlebush" 1.5 mi. NE
15422 Ephedra nevadensis      "Nevada ephedra" 865 ft. E
13190 Ephedra viridis      "green ephedra" 2 mi. N
14239 Ericameria nauseosa  var. juncea  1.6 mi. N
02977 Eriogonum fusiforme      "Grand Valley desert trumpet" 1 mi. S
13205 Eriogonum subreniforme      "kidney-leaf wild buckwheat" 2 mi. N
03017 Eschscholzia minutiflora      "pygmy poppy" 2 mi. N
08908 Fraxinus anomala      "single-leaf ash" 1.5 mi. NE
08911 Fraxinus velutina      "velvet ash" 1.5 mi. NE
08910 Gaura coccinea      "scarlet beeblossom" 1.5 mi. NE
00164 Hymenopappus filifolius  var. cinereus   "common woollywhite" 1.4 mi. NW
15421 Krameria erecta      "little-leaf ratany" 865 ft. E
14241 Krameria erecta      "little-leaf ratany" same section
15419 Larrea tridentata      "creosote bush" 865 ft. E
04197 Lotus humistratus      "foothill deervetch" same section
00157 Lupinus sericeus  var. barbiger   "bearded silky lupine" 1.4 mi. NW
02975 Mentzelia       "blazingstar" same section
04198 Mentzelia albicaulis      "whitestem blazingstar" same section
04199 Mirabilis multiflora      "Colorado four o'clock" same section
05273 Morus alba      "white mulberry" 432 ft. E
04195 Nama demissum      "purplemat" same section
05728 Opuntia echinocarpa     1313 ft. E
05718 Opuntia phaeacantha  var. discata  1313 ft. E
08921 Opuntia phaeacantha  var. major  1.5 mi. NE
04196 Phacelia cephalotes      "virgin scorpionweed" same section
03009 Phacelia cephalotes      "virgin scorpionweed" 1.8 mi. N
08905 Phacelia cryptantha      "hidden-flower scorpionweed" 1.5 mi. NE
04200 Phacelia fremontii      "Fremont's scorpionweed" same section
14237 Pluchea sericea      "arrow weed" 1.6 mi. N
08755 Pluchea sericea      "arrow weed" 1.5 mi. NE
05686 Pluchea sericea      "arrow weed" 1.5 mi. NE
15264 Prosopis glandulosa      "honey mesquite" same section
15420 Prosopis glandulosa      "honey mesquite" 865 ft. E
14238 Prosopis glandulosa  var. torreyana   "western honey mesquite" 1.6 mi. N
05698 Prosopis odorata     1.5 mi. NE
04216 Quercus turbinella      "Sonoran scrub oak" 1.7 mi. S
08915 Rafinesquia californica      "California chicory" 1.5 mi. NE
05769 Stephanomeria exigua      "small wirelettuce" 1 mi. S
14246 Tetradymia axillaris      "longspine horsebrush" 1.5 mi. S
14527 Thymophylla acerosa      "prickly-leaf dogweed" 1.3 mi. N
08917 Triticum aestivum      "cultivated wheat" 1.5 mi. NE
14248 Xylorhiza tortifolia  var. tortifolia   "Mojave woody aster" 1.5 mi. S
00156 Yucca utahensis      "Utah narrow-leaf yucca" 1.4 mi. NW
08919 Yucca utahensis      "Utah narrow-leaf yucca" 1.5 mi. NE


Nearby locations from the USGS Geographic Name Information System (GNIS) database:

Name County Dist., dir. Elevation (ft.) 7.5' Quad Name
Harrisburg (Populated Place) Washington County, UT 824 ft. W 3009  Harrisburg Junction 
Harrisburg Flat (Flat) Washington County, UT 0.6 mi. W 3084  Harrisburg Junction 
Leeds Creek (Stream) Washington County, UT 0.8 mi. NW   Signal Peak 
Little Purgatory (Area) Washington County, UT 1.1 mi. E 3340  Hurricane 
Red Cliffs Campground (Locale) Washington County, UT 1.5 mi. N 3265  Harrisburg Junction 
Water Canyon (Valley) Washington County, UT 1.5 mi. N   Signal Peak 
Leeds Reef (Ridge) Washington County, UT 1.5 mi. NE 3356  Harrisburg Junction 
Red Reef (Ridge) Washington County, UT 1.5 mi. N 3232  Harrisburg Junction 
Cottonwood Hill (Summit) Washington County, UT 1.5 mi. SW 3166  Harrisburg Junction 
Dicks Canyon (Valley) Washington County, UT 1.8 mi. N   Harrisburg Junction 
Harrisburg Bench (Bench) Washington County, UT 2 mi. S 3501  Harrisburg Junction 
Harrisburg Canyon (Valley) Washington County, UT 2.1 mi. S   Harrisburg Junction 
Harrisburg Gap (Gap) Washington County, UT 2.2 mi. S 2792  Harrisburg Junction 
Harrisburg Creek (Stream) Washington County, UT 2.2 mi. S   Harrisburg Junction 
Cobb Mine (Mine) Washington County, UT 2.2 mi. N 3645  Harrisburg Junction 
White Reef (Ridge) Washington County, UT 2.2 mi. N 3566  Harrisburg Junction 
Quail Creek (Stream) Washington County, UT 2.2 mi. S   Signal Peak 
Leeds Cemetery (Cemetery) Washington County, UT 2.5 mi. NE 3416  Hurricane 
Cottonwood Canyon (Valley) Washington County, UT 2.2 mi. SW   Harrisburg Junction 
East Reef (Ridge) Washington County, UT 2.2 mi. E 3009  Hurricane 


Taxon Links for species Larrea tridentata  (DC.) Coville

CalPhotos, Berkeley Digital Library Project

CNPS Manual of California Vegetation Database

USDA Plants database
University of Washington Herbarium: Plants of Washington (images)

Texas A&M University: Image Library (images)

Lady Bird Johnson's Wildflower Center

Google Images

External link to this species in the UVU Herbarium:

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