Utah Valley University Herbarium


Accession # 18008 
Family - UVUAPG III FamilyCronquist FamilyA Utah Flora
Species Senecio flaccidus Less.
Infraspecific    var. flaccidus 
Common name   thread-leaf ragwort
R. Van Buren   1877  
   with J. Cooper
Coll. Date 28 August 2010 
United States
San Juan County
Locality Comb Wash vicinity, along U.S. Highway 163, ca. 8 miles W of Bluff;
     Elev.: 4386 ft. (1337 m.)
Latitude Longitude 37° 16'  17.8" N, 109° 40'  35.6" 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: L1S2. 


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

     Senecio flaccidus var. flaccidus Less.

     Senecio douglasii var. jamesii (Torr. & Gray) Ediger ex Correll & Johnston
     Senecio douglasii ssp. longilobus (Benth.) W.A. Weber
     Senecio douglasii var. longilobus (Benth.) L. Benson
     Senecio filifolius Nutt., non Berg.
     Senecio longilobus Benth.

Common Name(s): threadleaf groundsel, threadleaf ragwort.

Taxonomic Hierarchy: (ITIS TSN=530313, click for more information and references)

        Kingdom: Plantae
            Subkingdom: Tracheobionta
                Division: Magnoliophyta
                    Class: Magnoliopsida
                        Subclass: Asteridae
                            Order: Asterales
                                Family: Asteraceae
                                    Genus: Senecio
                                        Species: Senecio flaccidus
                                            Variety: Senecio flaccidus var. flaccidus


Images of other samples of the same species:
specimen image: 04242s2.jpg 

Nearby Accessions

Other accessions in the database collected near this one:

Accession Name Dist., dir.
04303 Abronia fragrans      "snowball sand verbena" 1.5 mi. W
04269 Allium geyeri  var. chatterleyi   "Chatterley's wild onion" 1.5 mi. W
18010 Asteraceae      same section
04281 Astragalus amphioxys  var. amphioxys   "crescent milkvetch" 1.5 mi. W
04268 Astragalus desperatus  var. desperatus   "rimrock milkvetch" 1.5 mi. W
18011 Baccharis wrightii      "Wright's baccharis" 2188 ft. N
04259 Cercocarpus montanus      "alderleaf mountain mahogany" 1.5 mi. W
04250 Chamaesyce fendleri      "Fendler's sandmat" 1.5 mi. W
04258 Comandra umbellata  var. pallida  1.5 mi. W
04256 Cryptantha cinerea  var. jamesii   "James' cat's eye" 1.5 mi. W
04260 Dimorphocarpa wislizeni      "Wislizen's spectacle pod" 1.5 mi. W
04304 Eremocrinum albomarginatum      "Utah solitaire lily" 1.5 mi. W
04249 Eriogonum alatum      "winged wild buckwheat" 1.5 mi. W
14852 Eriogonum clavellatum      "Comb Wash wild buckwheat" same section
18012 Eriogonum clavellatum      "Comb Wash wild buckwheat" 2188 ft. N
18009 Eriogonum corymbosum  var. velutinum   "velvety wild buckwheat" same section
18013 Eriogonum microthecum  var. simpsonii   "Simpson's wild buckwheat" 2188 ft. N
04282 Gaillardia pinnatifida      "Hopi blanketflower" 1.5 mi. W
04278 Gilia ophthalmoides      "eyed gilia" 1.5 mi. W
04253 Hilaria jamesii      "James' galleta" 1.5 mi. W
04283 Houstonia rubra      "red bluet" 1.5 mi. W
04247 Hymenoxys acaulis  var. ivesiana   "Ives' four-nerve daisy" 1.5 mi. W
04272 Linum puberulum      "plains flax" 1.5 mi. W
04305 Lupinus pusillus  var. pusillus   "rusty lupine" 1.5 mi. W
04299 Phemeranthus brevifolius      "pygmy fameflower" 1.5 mi. W
04255 Physaria rectipes      "straight bladderpod" 1.5 mi. W
04270 Plantago patagonica      "Patagonia plantain" 1.5 mi. W
04257 Quercus turbinella      "Sonoran scrub oak" 1.5 mi. W
18014 Suaeda nigra     2681 ft. N
04298 Townsendia incana      "silvery Townsend-daisy" 1.5 mi. W
04254 Vulpia octoflora      "sixweeks fescue" 1.5 mi. W


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

Name County Dist., dir. Elevation (ft.) 7.5' Quad Name
Snake Canyon (Valley) San Juan County, UT 2813 ft. NE   Bluff SW 
Navajo Spring (Spring) San Juan County, UT 0.8 mi. S 4452  Bluff SW 
Butler Wash (Stream) San Juan County, UT 2.5 mi. S   Hotel Rock 
Gothic Creek (Stream) San Juan County, UT 3 mi. S   Toh Atin Mesa West 
Bluff Airport (Airport) San Juan County, UT 2.8 mi. SE 4459  Bluff SW 
San Juan Hill (Summit) San Juan County, UT 3.2 mi. S 4734  San Juan Hill 
Hobbs Wash Historical Marker (Park) San Juan County, UT 3 mi. E 4429  Bluff 
Comb Wash (Valley) San Juan County, UT 4.1 mi. S   Hotel Rock 
Road Canyon (Valley) San Juan County, UT 4.5 mi. N   Cedar Mesa North 
Buck Creek (Stream) San Juan County, UT 3.6 mi. E   Bluff 
Lime Ridge (Ridge) San Juan County, UT 3.9 mi. SW 5161  San Juan Hill 
Barton Range Canyon (Valley) San Juan County, UT 5 mi. N   Bluff SW 
White Rock Point (Cliff) San Juan County, UT 4.5 mi. SE 4689  White Rock Point 
Chinle Creek (Stream) San Juan County, UT 5.5 mi. S   Mexican Water 
Four Foot Rapids (Rapids) San Juan County, UT 5.7 mi. SW 4226  San Juan Hill 
Tank Mesa (Summit) San Juan County, UT 5.8 mi. NE 4876  Bluff 
Tselakai Dezza (Populated Place) San Juan County, UT 6.1 mi. SE 4584  White Rock Point 


Taxon Links for species Senecio flaccidus  Less.

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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