Utah Valley University Herbarium


Accession # 02590 
Family - UVUAPG III FamilyCronquist FamilyA Utah Flora
Species Ambrosia acanthicarpa Hook.
Common name   flatspine bur ragweed
J. Rogers   s.n.  
Coll. Date 04 October 1997 
United States
Locality 0.25 miles N of entrance station to Little Sahara Recreation area, E side of street, 1-2 square mile area.
Habitat Notes very sandy desert area, mostly Russian thistle, plants not crowded, isolated, a few cacti, scarce junipers, some clumpy grasses. 
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 39° 37'  57" N, 112° 23'  32" W
Township Range T14S, R5W, Sec. 3  
Datum Not recorded
Uncertainty Not calculated
TRS Notes Latitude and longitude were derived from township and range information and may be
inaccurate by as much as 0.7 miles (or 4.2 miles if the section is not given).


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

     Ambrosia acanthicarpa Hook.

     Franseria acanthicarpa (Hook.) Coville
     Gaertneria acanthicarpa (Hook.) Britt.

Common Name(s): annual bursage, bursage, bursage ragweed, flatspine burr ragweed, flat-spine burr-ragweed, sand bursage.

Taxonomic Hierarchy: (ITIS TSN=36497, click for more information and references)

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


Available images of this specimen (click to view):
specimen image: 02590s2.jpg

Images of other samples of the same species:
specimen image: 02589s2.jpg 
specimen image: 03220s2.jpg 
specimen image: 05509s2.jpg 
specimen image: 07046s2.jpg 
specimen image: 07193s3.jpg 
specimen image: 11047s3.jpg 

Nearby Accessions

Other accessions in the database collected near this one:

Accession Name Dist., dir.
02578 Amaranthus retroflexus      "redroot pigweed" same section
02589 Ambrosia acanthicarpa      "flatspine bur ragweed" same section
02584 Astragalus piutensis      "Marysvale milkvetch" same section
02592 Bassia scoparia      "summer-cypress" same section
05609 Chrysothamnus nauseosus  var. turbinatus   "dune rubber rabbitbrush" 1 mi. N
02580 Corispermum americanum      "American bugseed" same section
05611 Corispermum americanum      "American bugseed" 1 mi. N
05610 Croton texensis      "Texas croton" 1 mi. N
13139 Eriogonum nummulare      "money wild buckwheat" 1 mi. N
05613 Eriogonum nummulare      "money wild buckwheat" 1 mi. N
05612 Helianthus anomalus      "western sand sunflower" 1 mi. N
02587 Machaeranthera canescens      "gray tansy aster" same section
04750 Penstemon angustifolius  var. dulcis   "sweet narrow-leaf beardtongue" 1.4 mi. SE
05608 Psoralidium lanceolatum  var. lanceolatum  1 mi. N
08685 Psoralidium lanceolatum  var. stenostachys  same section
02586 Salsola paulsenii      "barbwire Russian thistle" same section
02585 Salsola tragus      "prickly Russian thistle" same section
02588 Sambucus caerulea     same section
02579 Solanum triflorum      "cut-leaf nightshade" same section
02583 Sphaeralcea parvifolia      "small-leaf globemallow" same section
02591 Tragopogon dubius      "yellow salsify" same section


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

Name County Dist., dir. Elevation (ft.) 7.5' Quad Name
Sand Mountain (Summit) Juab County, UT 2549 ft. S 5601  Lynndyl NW 
Sand Mountain Campground (Locale) Juab County, UT 2562 ft. NE 4922  Lynndyl NW 
Sand Hills (Summit) Juab County, UT 0.7 mi. NW 5371  Lynndyl NW 
White Sand Dunes (Area) Juab County, UT 2.5 mi. N 4954  Lynndyl NW 
Tanner Creek (Stream) Juab County, UT 3.4 mi. S   Sabie Mountain 
Oasis Campground (Locale) Juab County, UT 4.5 mi. NE 5066  Tanner Creek Narrows 
Sahara Sand Dunes Heliport (Airport) Juab County, UT 4.6 mi. NE 5102  Tanner Creek Narrows 
Little Sahara National Recreation Area (Park) Juab County, UT 5.2 mi. N 5105  Tanner Creek Narrows 
The Knoll (Summit) Juab County, UT 5.2 mi. SW 4866  Lynndyl West 
Jericho Wash (Valley) Juab County, UT 5.5 mi. NE   Maple Peak 


Taxon Links for species Ambrosia acanthicarpa  Hook.

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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