Utah Valley University Herbarium


Accession # 14281 
Family - UVUAPG III FamilyCronquist FamilyA Utah Flora
Species Psilostrophe cooperi (A. Gray) Greene
Common name   whitestem paperflower
R. Van Buren   938  
   with J. Cooper
Coll. Date 21 July 2005 
United States
Washington County
Locality alluvial fans on the western slope of the Beaver Dam Mountains, along Old Highway 91, E of Castle Cliff Wash, ca. 1 mile S of Castle Cliff.
     Elev.: 3520 ft. (1073 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° 3'  14.46" N, 113° 53'  38.82" 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: L2S1. 


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

     Psilostrophe cooperi (Gray) Greene

     Riddellia cooperi Gray

Common Name(s): paperflower (whitestem), whitestem paperflower.

Taxonomic Hierarchy: (ITIS TSN=38313, click for more information and references)

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


Images of other samples of the same species:
specimen image: 03657s2.jpg 
specimen image: 08243s2.jpg 
specimen image: 08244s2.jpg 
specimen image: 08245s2.jpg 
specimen image: 08246s2.jpg 
specimen image: 10228s2.jpg 
specimen image: 16840e1.jpg 
specimen image: 16840d1.jpg 
specimen image: 16840c1.jpg 
specimen image: 16840b1.jpg 
specimen image: 16840a1.jpg 
specimen image: 16840s1.jpg 

Nearby Accessions

Other accessions in the database collected near this one:

Accession Name Dist., dir.
08387 Agave utahensis      "Utah dwarf century plant" same section
05310 Aloysia wrightii      "Wright's beebrush" 1.6 mi. N
14286 Ambrosia eriocentra      "woolly bur-sage" same section
08958 Ambrosia eriocentra      "woolly bur-sage" same section
14459 Ambrosia salsola      "burrobush" same section
15274 Arctostaphylos pringlei      "Pringle manzanita" 1.7 mi. NW
05278 Baccharis sergiloides      "desert seep-willow" 1.6 mi. N
14283 Brickellia microphylla  var. scabra   "rough brickellbush" same section
14284 Buddleja utahensis      "Utah butterflybush" same section
05311 Buddleja utahensis      "Utah butterflybush" 1.6 mi. N
14794 Buddleja utahensis      "Utah butterflybush" same section
05700 Carya illinoinensis      "pecan" same section
15711 Cryptantha pterocarya  var. cycloptera  1.8 mi. SE
08389 Cupressus arizonica      "Arizona cypress" same section
05275 Cupressus arizonica      "Arizona cypress" 1.6 mi. N
04190 Cupressus arizonica      "Arizona cypress" 1.6 mi. N
14795 Encelia virginensis      "Virgin River brittlebush" same section
17932 Ephedra fasciculata      "Mojave ephedra" same section
14798 Ephedra viridis  var. viridis  same section
14808 Ericameria laricifolia      "turpentine bush" 1.3 mi. NW
14282 Ericameria paniculata      "Mojave rabbitbrush" same section
14814 Eriogonum heermannii  var. sulcatum   "Heermann's wild buckwheat" same section
14797 Lepidium fremontii      "desert peppercress" same section
15712 Lepidium lasiocarpum  var. lasiocarpum  1.8 mi. SE
08385 Lesquerella rectipes      "straight bladderpod" same section
08959 Melia azedarach      "Chinaberrytree" same section
08305 Neolloydia johnsonii     same section
16856 Oenothera primiveris      "desert evening primrose" same section
14796 Parthenium incanum      "mariola" same section
08960 Parthenium incanum      "mariola" same section
05279 Parthenium incanum      "mariola" 1.6 mi. N
14813 Parthenium incanum      "mariola" same section
05277 Perityle tenella      "Springdale rockdaisy" 1.6 mi. N
14285 Perityle tenella      "Springdale rockdaisy" same section
02667 Phacelia fremontii      "Fremont's scorpionweed" same section
02666 Physaria tenella      "Moapa bladderpod" same section
05268 Prunus fasciculata      "desert almond" 1.6 mi. N
08245 Psilostrophe cooperi      "whitestem paperflower" same section
05309 Psorothamnus polydenius  var. polydenius   "Nevada dalea" 1.6 mi. N
15634 Rafinesquia neomexicana     1.8 mi. SE
08386 Salazaria mexicana      "Mexican bladdersage" same section
14457 Salazaria mexicana      "Mexican bladdersage" same section
08957 Senecio douglasii  var. monoensis   "Mono ragwort" same section
14793 Senecio flaccidus  var. monoensis   "Mono ragwort" same section
05276 Stephanomeria tenuifolia  var. tenuifolia   "narrow-leaf wirelettuce" 1.6 mi. N
02668 Thamnosma montana      "turpentinebroom" same section
14458 Thamnosma montana      "turpentinebroom" same section
16857 Thamnosma montana      "turpentinebroom" same section
17931 Tiquilia canescens      "woody crinklemat" same section
11453 Tridens muticus      "slim tridens" same section
05469 Yucca schidigera      "Mojave yucca" 1.6 mi. N
08388 Yucca schidigera      "Mojave yucca" same section


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

Name County Dist., dir. Elevation (ft.) 7.5' Quad Name
Castle Cliff (Cliff) Washington County, UT 2939 ft. E 4055  Castle Cliff 
Castle Cliff (Cliff) Washington County, UT 1 mi. NE 3862  Castle Cliff 
Joshua Tree Natural Area (Reserve) Washington County, UT 1.5 mi. S 3140  Castle Cliff 
Summit Spring Wash (Valley) Washington County, UT 2.1 mi. NE   Castle Cliff 
Bulldog Knolls (Range) Washington County, UT 2.4 mi. SE 3373  Jarvis Peak 
Bulldog Canyon (Valley) Washington County, UT 2.5 mi. SE   Jarvis Peak 
Welcome Spring (Spring) Washington County, UT 3 mi. N 4544  Castle Cliff 
Summit Spring (Spring) Washington County, UT 3 mi. N 4600  Jarvis Peak 
Tabeau Peak (Summit) Washington County, UT 3.2 mi. S 4341  Jarvis Peak 
Middle Spring (Spring) Washington County, UT 4.8 mi. N 4728  Castle Cliff 
Black Warrior Mine (Mine) Washington County, UT 4.1 mi. E 6257  Jarvis Peak 
Westside Mine (Mine) Washington County, UT 4.4 mi. E 5794  Jarvis Peak 
Reber Spring (Spring) Washington County, UT 5.4 mi. N 4242  Castle Cliff 
Sam Spring (Spring) Washington County, UT 5.5 mi. N 4685  West Mountain Peak 
Utah Hill Summit (Locale) Washington County, UT 5 mi. NE 4744  Jarvis Peak 


Taxon Links for species Psilostrophe cooperi  (A. Gray) Greene

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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