Utah Valley University Herbarium


Accession # 11998 
Family - UVUAPG III FamilyCronquist FamilyA Utah Flora
Species Machaeranthera canescens (Pursh) A. Gray
Infraspecific    var. canescens 
Common name   hoary tansyaster, grey tansyaster
Donna M. Barnes   5434  
Coll. Date 27 September 2006 
Geography United States.  Utah.  Washington County
Locality dirt road NW of Zion National Park. 
Elev.: 6693 ft. (2041 m.)
Habitat Notes mountain shrub community; sandy soil. 
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° 0'  7" N, 112° 52'  54" 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.
Specimen Notes [coordinate incorrect, JAA 2013] 


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

     Machaeranthera canescens ssp. canescens (Pursh) Gray

Common Name(s): hoary tansyaster, hoary tansy-aster, ironplant goldenweed.

Taxonomic Hierarchy: (ITIS TSN=37985, click for more information and references)

        Kingdom: Plantae
            Subkingdom: Tracheobionta
                Division: Magnoliophyta
                    Class: Magnoliopsida
                        Subclass: Asteridae
                            Order: Asterales
                                Family: Asteraceae
                                    Genus: Machaeranthera
                                        Species: Machaeranthera canescens
                                            Subspecies: Machaeranthera canescens ssp. canescens


Available images of this specimen (click to view):
specimen image: 11998s1.jpg specimen image: 11998d1.jpg specimen image: 11998c1.jpg

Images of other samples of the same species:
specimen image: 01318s2.jpg 
specimen image: 01376s3.jpg 
specimen image: 02587s2.jpg 
specimen image: 03266s2.jpg 
specimen image: 03267s2.jpg 
specimen image: 03268s2.jpg 
specimen image: 03829s2.jpg 
specimen image: 04782s2.jpg 
specimen image: 04810s2.jpg 
specimen image: 05503s2.jpg 
specimen image: 05504s2.jpg 
specimen image: 05580s2.jpg 
specimen image: 05731s2.jpg 
specimen image: 06357s2.jpg 
specimen image: 06734s2.jpg 
specimen image: 06910s2.jpg 
specimen image: 07277s2.jpg 
specimen image: 07783s2.jpg 
specimen image: 08500s2.jpg 
specimen image: 08995s2.jpg 
specimen image: 09065s2.jpg 
specimen image: 09336s2.jpg 
specimen image: 09596s2.jpg 
specimen image: 11883s2.jpg 
specimen image: 11883d1.jpg 
specimen image: 11930s1.jpg 
specimen image: 12019c1.jpg 
specimen image: 12019d1.jpg 
specimen image: 12019s1.jpg 
specimen image: 13454s1.jpg 

Nearby Accessions

Other accessions in the database collected near this one:

Accession Name Dist., dir.
14290 Artemisia cana  ssp. viscidula   "silver sagebrush" 47 mi. N
05146 Asplenium resiliens      "blackstem spleenwort" 15.8 mi. N
05221 Astragalus ceramicus      "painted milkvetch" 16.1 mi. N
05172 Astragalus mollissimus      "woolly milkvetch" 16.1 mi. N
05213 Astragalus zionis  var. zionis   "Zion milkvetch" 16.1 mi. N
06048 Bromus ciliatus      "fringed brome" 15.8 mi. N
05212 Centrostegia thurberi      "Thurber's spineflower" 16.1 mi. N
06046 Chrysopsis jonesii      "Jones' goldenaster" 15.8 mi. N
05201 Comandra umbellata  var. pallida  16.1 mi. N
05175 Cryptantha cinerea  var. arenicola   "sandy James' cat's eye" 16.1 mi. N
08603 Cymopterus lemmonii      "Lemmon's spring parsley" 49.4 mi. N
05176 Dichelostemma pulchellum     16.1 mi. N
05155 Dryopteris filix-mas      "male fern" 15.8 mi. N
06079 Erigeron flagellaris      "trailing fleabane" 45.9 mi. N
06735 Erigeron religiosus      "Clear Creek fleabane" 14.9 mi. N
04917 Erigeron sionis  var. trilobatus   "Cedar Breaks fleabane" 39.9 mi. N
05216 Eriogonum davidsonii      "Davidson's wild buckwheat" 16.1 mi. N
06082 Geum triflorum  var. ciliatum   "old man's whiskers" 45.9 mi. N
06076 Helenium hoopesii      "orange sneezeweed" 45.9 mi. N
06077 Ipomopsis spicata  ssp. tridactyla   "spiked gilia" 45.9 mi. N
08596 Lathyrus laetivirens      "plateau vetchling" 49.4 mi. N
05197 Layia glandulosa      "white-daisy tidytips" 16.1 mi. N
05210 Linanthus bigelovii      "Bigelow's linanthus" 16.1 mi. N
14289 Mahonia repens      "Oregongrape" 48.8 mi. N
05215 Microseris lindleyi      "Lindley's silverpuffs" 16.1 mi. N
05222 Microsteris gracilis  var. humilior   "slender phlox" 16.1 mi. N
05208 Microsteris gracilis  var. humilior   "slender phlox" 16.1 mi. N
06045 Pellaea glabella      "smooth cliffbrake" 15.8 mi. N
05147 Pellaea truncata      "spiny cliffbrake" 15.8 mi. N
06042 Perityle tenella      "Springdale rockdaisy" 15.8 mi. N
06044 Phacelia heterophylla  var. heterophylla   "variable-leaf scorpionweed" 15.8 mi. N
05211 Phacelia ivesiana      "Ives' scorpionweed" 16.1 mi. N
05209 Physaria chambersii  var. chambersii   "Chambers' twinpod" 16.1 mi. N
06075 Polemonium pulcherrimum  var. delicatum  45.9 mi. N
15450 Ranunculus testiculatus     26.2 mi. N
14288 Rosa woodsii  var. ultramontana   "Woods' rose" 48.8 mi. N
06074 Salix glauca  var. villosa   "grayleaf willow" 45.9 mi. N
06047 Selaginella watsonii      "Watson's spikemoss" 15.8 mi. N
05214 Tradescantia occidentalis  var. occidentalis   "prairie spiderwort" 16.1 mi. N
06078 Trifolium longipes  var. pygmaeum   "pygmy summer clover" 45.9 mi. N
08604 Trifolium longipes  var. pygmaeum   "pygmy summer clover" 49.4 mi. N
08605 Viola canadensis      "Canadian white violet" 49.4 mi. N


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

Name County Dist., dir. Elevation (ft.) 7.5' Quad Name
Rosy Canyon (Valley) Kane County, UT 1.1 mi. E   Elephant Butte 
Cottonwood Spring Number Three (Spring) Mohave County, AZ 1.9 mi. W 5404  Colorado City 
Cottonwood Point Wilderness (Reserve) Mohave County, AZ 2.2 mi. SW 5709  Colorado City 
Cottonwood Canyon (Valley) Mohave County, AZ 2.3 mi. SW   Hildale 
Cottonwood Canyon (Valley) Kane County, UT 2.3 mi. SW   Hildale 
Rosy Canyon (Valley) Mohave County, AZ 2.7 mi. S   Strawberry Point 
Parashont Point (Cliff) Mohave County, AZ 2.6 mi. S 5686  Moccasin 
Cottonwood Spring Number One (Spring) Mohave County, AZ 2.3 mi. W 5374  Colorado City 
Lyons Point (Cliff) Mohave County, AZ 2.9 mi. S 6004  Colorado City 
Scotts Point (Cliff) Mohave County, AZ 2.9 mi. S 5761  Colorado City 
Scott Canyon (Valley) Mohave County, AZ 3.3 mi. S   Colorado City 
Parashont Canyon (Valley) Mohave County, AZ 3.3 mi. S   Moccasin 
Pine Spring (Spring) Kane County, UT 3.3 mi. NE 5565  Elephant Butte 
Cane Beds (Populated Place) Mohave County, AZ 3.9 mi. S 5099  Colorado City 
Moccasin Mountains (Range) Kane County, UT 3.4 mi. E 5883  Elephant Butte 
Goat Springs (Spring) Kane County, UT 4.4 mi. N 6165  Hildale 
Woodberry Canyon (Valley) Mohave County, AZ 4.7 mi. S   Moccasin 
Squirrel Creek (Stream) Washington County, UT 4.1 mi. NW   Hildale 
Ronso Spring (Spring) Kane County, UT 4.8 mi. N 6122  Hildale 
Bull Pasture (Valley) Mohave County, AZ 4.7 mi. S   Moccasin 


Taxon Links for species Machaeranthera canescens  (Pursh) A. Gray

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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