Utah Valley University Herbarium


Accession # 16840 
Family - UVUAPG III FamilyCronquist FamilyA Utah Flora
Species Psilostrophe cooperi (A. Gray) Greene
Common name   whitestem paperflower
S. Hegji   0165  
Coll. Date 08 March 2012 
United States
Mohave County
Locality Cedar Pockets Exit of I-15;
     Elev.: 2273 ft. (693 m.)
Habitat Notes S facing exposed slope formed by a roadcut. 
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 36° 57'  17.99" N, 113° 47'  50.7" 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.


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


Available images of this specimen (click to view):
specimen image: 16840s1.jpg specimen image: 16840a1.jpg specimen image: 16840b1.jpg specimen image: 16840c1.jpg
specimen image: 16840d1.jpg specimen image: 16840e1.jpg

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 

Nearby Accessions

Other accessions in the database collected near this one:

Accession Name Dist., dir.
14802 Aloysia wrightii      "Wright's beebrush" 2421 ft. NE
11367 Argemone munita  var. rotundata  2583 ft. NE
11361 Baileya multiradiata      "desert marigold" same section
14021 Bebbia juncea      "sweetbush" 147 ft. SE
14804 Brickellia atractyloides      "spearleaf brickellbush" 2421 ft. NE
14800 Brickellia longifolia      "long-leaf brickellbush" 2421 ft. NE
11364 Buddleja utahensis      "Utah butterflybush" same section
13211 Camissonia multijuga      "frost-stem suncup" same section
11362 Camissonia multijuga      "frost-stem suncup" same section
11365 Castilleja chromosa      "common paintbrush" same section
14801 Encelia virginensis      "Virgin River brittlebush" 2421 ft. NE
14803 Ephedra fasciculata      "Mojave ephedra" 2421 ft. NE
14806 Ericameria nauseosa      "rubber rabbitbrush" 2 mi. NE
14799 Eriogonum fasciculatum  var. polifolium   "Eastern Mojave wild buckwheat" 2421 ft. NE
11358 Eriogonum inflatum  var. inflatum   "desert trumpet" same section
11359 Mortonia scabrella      "Rio Grande saddlebush" same section
14805 Mortonia scabrella  var. utahensis  2992 ft. NE
11360 Nicotiana trigonophylla      "desert tobacco" same section
11355 Parietaria pensylvanica      "Pennsylvania pellitory" same section
11357 Pectocarya heterocarpa      "chuckwalla combseed" same section
17903 Peucephyllum schottii      "Schott's desert-fir" 2861 ft. SE
14019 Phacelia ambigua      "notch-leaf scorpionweed" 64 ft. NW
11368 Physalis crassifolia      "yellow nightshade groundcherry" 2583 ft. NE
11356 Plantago insularis      "desert plantain" same section
16842 Plantago ovata      "desert plantain" same section
14020 Thymophylla pentachaeta      "five-needled pricklyleaf" 64 ft. NW
16841 Thymophylla pentachaeta      "five-needled pricklyleaf" same section
11363 Thymophylla pentachaeta  var. belenidium   "five-needled pricklyleaf" same section
11366 Thymophylla pentachaeta  var. belenidium   "five-needled pricklyleaf" 2583 ft. NE


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

Name County Dist., dir. Elevation (ft.) 7.5' Quad Name
Cedar Pockets Wash (Valley) Washington County, UT 2930 ft. E   Jarvis Peak 
Cedar Pockets Wash (Valley) Mohave County, AZ 2930 ft. E   Jarvis Peak 
Mountain Sheep Wash (Valley) Mohave County, AZ 1 mi. SW   Mount Bangs 
Sullivans Canyon (Valley) Mohave County, AZ 1.6 mi. SW   Mount Bangs 
Beaver Dam Mountains Wilderness (Reserve) Mohave County, AZ 3.3 mi. NE 4774  Mountain Sheep Spring 
Yellow Knolls (Summit) Mohave County, AZ 3.4 mi. NE 2658  Purgatory Canyon 
Grey Points (Cliff) Mohave County, AZ 3.4 mi. E 3950  Purgatory Canyon 
Black Rock Gulch (Valley) Mohave County, AZ 4.1 mi. E   Wolf Hole Mountain West 
Bulldog Pass (Gap) Washington County, UT 5.1 mi. N 4734  Jarvis Peak 
Lime Hills (Ridge) Mohave County, AZ 4.3 mi. SE 4502  Purgatory Canyon 
Blakes Lambing Grounds (Area) Mohave County, AZ 4.5 mi. NE 3996  Purgatory Canyon 
The Narrows (Valley) Mohave County, AZ 4.4 mi. SW   Mountain Sheep Spring 
Mountain Sheep Spring (Spring) Mohave County, AZ 5.5 mi. S 4662  Mountain Sheep Spring 
Tabeau Peak (Summit) Washington County, UT 5.6 mi. NW 4341  Jarvis Peak 
Bulldog Canyon (Valley) Washington County, UT 6.1 mi. NW   Jarvis Peak 
Blakes Lambing Grounds (Area) Washington County, UT 6.3 mi. NE 4098  White Hills 
Bulldog Knolls (Range) Washington County, UT 6.3 mi. NW 3373  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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