Utah Valley University Herbarium


Accession # 18076 
Family - UVUAPG III FamilyCronquist FamilyA Utah Flora
Species Tetradymia canescens DC.
Common name   spineless horsebrush
Steve Hegji   0233  
Coll. Date 07 September 2013 
United States
Tooele County
Locality Sheeprock Mountains, Harker Canyon;
     Elev.: 6544 ft. (1995 m.)
Habitat Notes north facing grassy foothill with sage, rabbitbrush, and burned out Juniper. 
Latitude Longitude 39° 59'  19.15" N, 112° 28'  20.67" 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):

     Tetradymia canescens DC.

     Tetradymia canescens var. inermis (Rydb.) Payson

Common Name(s): gray horsebrush, spineless horsebrush.

Taxonomic Hierarchy: (ITIS TSN=38494, click for more information and references)

        Kingdom: Plantae
            Subkingdom: Tracheobionta
                Division: Magnoliophyta
                    Class: Magnoliopsida
                        Subclass: Asteridae
                            Order: Asterales
                                Family: Asteraceae
                                    Genus: Tetradymia
                                        Species: Tetradymia canescens


Images of other samples of the same species:
specimen image: 02027s1.jpg 
specimen image: 02304s1.jpg 
specimen image: 03281s1.jpg 
specimen image: 04642s1.jpg 
specimen image: 09001s1.jpg 
specimen image: 11923c1.jpg 
specimen image: 11923d1.jpg 
specimen image: 11923s2.jpg 
specimen image: 15598s1.jpg 
specimen image: 15808s1.jpg 

Nearby Accessions

Other accessions in the database collected near this one:

Accession Name Dist., dir.
15925 Aconitum columbianum      "western monkshood" 1.5 mi. SE
15854 Alyssum desertorum      "desert madwort" 365 ft. NE
15897 Alyssum desertorum      "desert madwort" 353 ft. NE
15898 Amelanchier utahensis      "Utah serviceberry" 370 ft. NE
18079 Angelica wheeleri      "Wheeler's angelica" same section
15926 Aquilegia formosa      "western columbine" 1.5 mi. SE
15928 Arenaria lanuginosa      "spreading sandwort" 1.5 mi. SE
15940 Argemone munita      "flatbud pricklypoppy" 2233 ft. NW
18082 Aster ascendens      "western aster" 1.2 mi. SE
15911 Balsamorhiza sagittata      "arrow-leaf balsamroot" 1 mi. SE
15853 Cercocarpus ledifolius      "curl-leaf mountain mahogany" 407 ft. NE
15946 Chrysothamnus nauseosus  var. hololeucus   "gray-stem rubber rabbitbrush" 1.3 mi. SE
15852 Cymopterus longipes      "long-stalked spring parsley" 737 ft. N
18080 Epilobium halleanum      "glandular willowherb" same section
18086 Equisetum laevigatum      "smooth horsetail" 1.5 mi. SE
15896 Eremogone loisiae      "Lois' sandwort" 769 ft. N
15943 Eriogonum microthecum      "slender wild buckwheat" 761 ft. N
15947 Eriogonum racemosum      "redroot wild buckwheat" same section
15912 Erythronium grandiflorum      "yellow glacier-lily" same section
18081 Helianthus annuus      "common sunflower" 1.2 mi. SE
15909 Lithophragma glabrum      "bulbous woodland-star" 1 mi. SE
15910 Lithophragma parviflorum      "small-flowered woodland-star" 1 mi. SE
18084 Marchantia polymorpha     1.4 mi. SE
15945 Mentha arvensis      "wild mint" 1.5 mi. SE
15927 Mimulus guttatus      "common monkeyflower" 1.5 mi. SE
15895 Penstemon humilis  var. brevifolius   "short-leaf low beardtongue" 1044 ft. N
15944 Petrophytum caespitosum      "rockmat" 911 ft. NE
18078 Populus tremuloides      "quaking aspen" 2534 ft. SE
18083 Ranunculus cymbalaria      "alkali buttercup" 1.4 mi. SE
15855 Salix       "willow" 656 ft. N
15899 Salix bebbiana      "Bebb willow" 656 ft. N
18085 Salix eriocephala  var. watsonii  1.5 mi. SE
15924 Sidalcea oregana      "Oregon checkerbloom" same section
18077 Symphoricarpos oreophilus      "mountain snowberry" 1571 ft. SE
15908 Viola nuttallii      "Nuttall's violet" 1 mi. SE


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

Name County Dist., dir. Elevation (ft.) 7.5' Quad Name
Harker Canyon (Valley) Tooele County, UT 778 ft. N   Erickson Knoll 
Lion Hill (Summit) Tooele County, UT 1.7 mi. NW 6890  Erickson Knoll 
Lion Hill Spring (Spring) Tooele County, UT 1.8 mi. W 6716  Erickson Knoll 
Dutch Peak (Summit) Tooele County, UT 2.4 mi. S 8816  Dutch Peak 
Sheeprock Mountains (Range) Tooele County, UT 2.7 mi. S 8114  Dutch Peak 
Wasatch National Forest-Vernon Division (Forest) Tooele County, UT 2.2 mi. E 6119  Dutch Peak 
Grove Hollow (Valley) Tooele County, UT 2.2 mi. E   Dutch Peak 
Black Peak (Summit) Tooele County, UT 2.9 mi. S 8882  Dutch Peak 
Snow Hollow (Valley) Tooele County, UT 2.7 mi. E   Dutch Peak 
Greens Ridge (Ridge) Tooele County, UT 3.5 mi. S 8327  Dutch Peak 
Stepladder Trough (Flat) Tooele County, UT 3.2 mi. NW 6086  Lookout Pass 
North Pine Canyon (Valley) Tooele County, UT 2.9 mi. NW   Erickson Knoll 
Benmore Experiment Station (Locale) Tooele County, UT 3.1 mi. NE 5975  Vernon 
Benmore Guard Station (Locale) Tooele County, UT 3.1 mi. NE 5965  Vernon 
Benmore (Locale) Tooele County, UT 3.1 mi. NE 5965  Vernon 
Benmore Experimental Pastures (Flat) Tooele County, UT 3.7 mi. NE 5791  Vernon 
Hilltop Mine (Mine) Tooele County, UT 3.1 mi. W 8816  Erickson Knoll 
Rock Canyon (Valley) Tooele County, UT 3.3 mi. NW   Erickson Knoll 
Upper Pine Grove (Woods) Tooele County, UT 3.5 mi. SW 8140  Erickson Knoll 
Lower Pine Grove (Woods) Tooele County, UT 3.7 mi. SW 7740  Erickson Knoll 


Taxon Links for species Tetradymia canescens  DC.

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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