Utah Valley University Herbarium


Accession # 14101 
Family - UVUAPG III FamilyCronquist FamilyA Utah Flora
Species Gutierrezia microcephala (DC.) A. Gray
Common name   matchweed
R. Van Buren   751  
   with J. Cooper, K.T. Harper
Coll. Date 02 June 2005 
United States
San Juan County
Locality eastern slopes of Red House Cliffs, on the canyon rim of a tributary of Armstrong Canyon, E side of Utah Highway 95, ca. 0.1 miles S of Atomic Rock;
     Elev.: 6035 ft. (1839 m.)
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° 34'  56.29" N, 110° 2'  18.02" 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.
Voucher Voucher for "Woody Plants of Utah" by R. Van Buren, K.T. Harper, J. Cooper 
Specimen Notes Journal Code: L1S3. 


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

     Gutierrezia microcephala (DC.) Gray

     Brachyris microcephala DC.
     Gutierrezia glomerella Greene
     Gutierrezia lucida (Greene) Greene
     Gutierrezia sarothrae var. microcephala (DC.) L. Benson
     Xanthocephalum lucidum Greene
     Xanthocephalum microcephalum (DC.) Shinners

Common Name(s): threadleaf snakeweed.

Taxonomic Hierarchy: (ITIS TSN=37482, click for more information and references)

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


Images of other samples of the same species:
specimen image: 04613s2.jpg 
specimen image: 13510s1.jpg 
specimen image: 15605s1.jpg 

Nearby Accessions

Other accessions in the database collected near this one:

Accession Name Dist., dir.
04760 Amsonia jonesii      "Jones' bluestar" 684 ft. N
04340 Atriplex corrugata      "mat saltbush" 684 ft. N
12556 Castilleja scabrida  var. scabrida   "rough paintbrush" same section
12555 Linum aristatum      "bristle flax" same section
12554 Lomatium parryi      "Parry's desert parsley" same section
04225 Lupinus polyphyllus  var. ammophilus   "sand bigleaf lupine" 684 ft. N
12557 Penstemon strictiformis      "Mancos beardtongue" same section
14102 Petradoria pumila      "common rock goldenrod" same section
12553 Physaria rectipes      "straight bladderpod" same section
14100 Rhamnus betulifolia      "birchleaf buckthorn" same section
14099 Symphoricarpos longiflorus      "long-flowered snowberry" same section


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

Name County Dist., dir. Elevation (ft.) 7.5' Quad Name
Atomic Rock (Pillar) San Juan County, UT 1200 ft. N 5978  Moss Back Butte 
To-ko-chi Canyon (Valley) San Juan County, UT 0.9 mi. NE   Moss Back Butte 
Indian Foot (Arch) San Juan County, UT 1 mi. N 5919  Moss Back Butte 
Armstrong Canyon (Valley) San Juan County, UT 1.3 mi. N   Kane Gulch 
Bridge View (Locale) San Juan County, UT 1.2 mi. NE 6030  Moss Back Butte 
The Shoe (Arch) San Juan County, UT 1.2 mi. E 6086  Moss Back Butte 
Ruin Rock (Pillar) San Juan County, UT 1.5 mi. N 5857  Moss Back Butte 
Kachina Bridge (Arch) San Juan County, UT 1.6 mi. N 5863  Moss Back Butte 
Bridge View (Locale) San Juan County, UT 1.3 mi. E 5952  Moss Back Butte 
Tuwa Canyon (Valley) San Juan County, UT 1.5 mi. E   Kane Gulch 
Owachomo Bridge (Arch) San Juan County, UT 1.6 mi. E 6185  Moss Back Butte 
Cathedral Rock (Pillar) San Juan County, UT 2 mi. N 5738  Moss Back Butte 
Natural Bridges National Monument (Park) San Juan County, UT 1.9 mi. NE 6211  Moss Back Butte 
Horse Collar Ruin (Locale) San Juan County, UT 2.3 mi. N 5788  Moss Back Butte 
Deer Canyon (Valley) San Juan County, UT 2.5 mi. NE   Woodenshoe Buttes 
Moss Back Butte (Summit) San Juan County, UT 2.7 mi. SW 7658  Moss Back Butte 
Natural Bridges National Monument Picnic Area (Park) San Juan County, UT 2.7 mi. NE 6227  Moss Back Butte 
Sipapu Bridge (Bridge) San Juan County, UT 3.2 mi. N 5906  Moss Back Butte 
Bridge View (Locale) San Juan County, UT 3.2 mi. NE 6319  Kane Gulch 
Sphinx Rock (Pillar) San Juan County, UT 3.6 mi. NE 5922  Kane Gulch 


Taxon Links for species Gutierrezia microcephala  (DC.) 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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