Utah Valley University Herbarium


Accession # 10626 
Family - UVUAPG III FamilyCronquist FamilyA Utah Flora
Species Pleiacanthus spinosus (Nutt.) Rydb.
Common name   thorn skeletonweed
R. Van Buren   1029  
   with J. Cooper
Coll. Date 02 August 2005 
United States
Wayne County
Locality NE slopes of Boulder Mountain, N side of Happy Valley Rd (FR 172), ca. 5 air miles SE of Grover;
     Elev.: 8097 ft. (2468 m.)
Habitat Notes in old burn area; 
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 38° 9'  55.86" N, 111° 19'  28.92" 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: L6S2. 


No synonyms recognized in the ITIS database.


Available images of this specimen (click to view):
specimen image: 10626s4.jpg

Nearby Accessions

Other accessions in the database collected near this one:

Accession Name Dist., dir.
01290 Arctostaphylos patula      "greenleaf manzanita" same section
12547 Artemisia ludoviciana  var. latiloba   "Louisiana wormwood" same section
01304 Ceanothus fendleri      "Fendler's ceanothus" same section
06129 Penstemon angustifolius  var. venosus   "venied narrow-leaf beardtongue" 1.2 mi. S
01303 Pinus edulis      "Colorado pinyon pine" same section
14356 Pinus ponderosa      "ponderosa pine" same section
01302 Pinus ponderosa      "ponderosa pine" same section
06126 Potentilla bicrenata      "round-toothed cinquefoil" 1.2 mi. S


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

Name County Dist., dir. Elevation (ft.) 7.5' Quad Name
Singletree Campground (Locale) Wayne County, UT 1930 ft. SW 8225  Grover 
Singletree Creek (Stream) Wayne County, UT 0.6 mi. S   Grover 
Chokecherry Creek (Stream) Garfield County, UT 0.6 mi. S   Grover 
Happy Valley (Basin) Wayne County, UT 0.8 mi. SE 7609  Grover 
Lion Mountain (Summit) Wayne County, UT 1.1 mi. NW 8783  Grover 
Devils Slide (Slope) Garfield County, UT 1.5 mi. S 8209  Grover 
Twin Peaks (Summit) Wayne County, UT 1.3 mi. NE 7704  Grover 
The Three Brothers (Range) Wayne County, UT 1.4 mi. SE 8071  Grover 
Chokecherry Meadow (Flat) Garfield County, UT 1.8 mi. SW 9617  Grover 
Chokecherry Point (Cape) Garfield County, UT 2.4 mi. SW 10558  Grover 
Chipmunk Spring (Spring) Garfield County, UT 2.5 mi. SW 10109  Grover 
Keller Knoll (Summit) Garfield County, UT 3 mi. S 9538  Lower Bowns Reservoir 
Rock Creek Meadow (Flat) Wayne County, UT 2.7 mi. W 10086  Grover 
Willow Draw (Valley) Garfield County, UT 3 mi. W   Blind Lake 
Wildcat Pasture (Flat) Garfield County, UT 3.8 mi. S 8678  Lower Bowns Reservoir 
Wildcat Ranger Station (Locale) Garfield County, UT 3.8 mi. S 8649  Lower Bowns Reservoir 
Rock Creek (Stream) Wayne County, UT 3.9 mi. N   Blind Lake 
Wildcat Creek (Stream) Garfield County, UT 4.2 mi. S   Lower Bowns Reservoir 
Larb Hollow (Valley) Garfield County, UT 3.6 mi. SE   Grover 
Miners Mountain (Summit) Wayne County, UT 4 mi. NE 7891  Grover 


Taxon Links for species Pleiacanthus spinosus  (Nutt.) Rydb.

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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