Utah Valley University Herbarium


Accession # 08768 
Family - UVUAPG III FamilyCronquist FamilyA Utah Flora
Species Polygonum douglasii Greene
Infraspecific    var. johnstonii Munz
K.T. Harper   2003-231  
   with Donna M. Barnes, R. Jolley
Coll. Date 19 August 2003 
United States
Summit County
Locality N slope of the Uinta Mts, East Fork of Black Fork River, Meeks cabin.
     Elev.: 9361 ft. (2854 m.)
Habitat Notes lodgepole pine forest. 
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 40° 55'  10" N, 110° 33'  5" W
Datum Not recorded
Uncertainty Not calculated


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

     Polygonum douglasii ssp. johnstonii (Munz) Hickman

     Polygonum douglasii var. johnstonii Munz
     Polygonum sawatchense Small
     Polygonum triandrum Coolidge
     Polygonum utahense Brenckle & Cottam

Common Name(s): Johnston knotweed, Johnston's knotweed.

Taxonomic Hierarchy: (ITIS TSN=524556, click for more information and references)

        Kingdom: Plantae
            Subkingdom: Tracheobionta
                Division: Magnoliophyta
                    Class: Magnoliopsida
                        Subclass: Caryophyllidae
                            Order: Polygonales
                                Family: Polygonaceae
                                    Genus: Polygonum
                                        Species: Polygonum douglasii
                                            Subspecies: Polygonum douglasii ssp. johnstonii


Available images of this specimen (click to view):
specimen image: 08768s1.jpg

Images of other samples of the same species:
specimen image: 00538s1.jpg 
specimen image: 00540s1.jpg 
specimen image: 02924s1.jpg 
specimen image: 04355s1.jpg 
specimen image: 04400s1.jpg 
specimen image: 04511s1.jpg 
specimen image: 05419s1.jpg 
specimen image: 05652s1.jpg 
specimen image: 08772s1.jpg 
specimen image: 09085s1.jpg 
specimen image: 11027s1.jpg 
specimen image: 11027f1.jpg 
specimen image: 11853s1.jpg 

Nearby Accessions

Other accessions in the database collected near this one:

Accession Name Dist., dir.
08773 Androsace septentrionalis      "pygmy-flowered rockjasmine" same section
08774 Astragalus miser  var. oblongifolius   "timber milkvetch" same section
09388 Cladonia coniocraea      "cup lichen" same section
08775 Collomia linearis      "tiny trumpet" same section
16812 Eremogone congesta  var. congesta  same section
08769 Eremogone congesta  var. congesta  same section
08771 Gayophytum decipiens      "deceptive groundsmoke" same section
08770 Hieracium albiflorum      "white hawkweed" same section
08772 Polygonum douglasii  var. douglasii  same section
08776 Spergularia rubra      "red sandspurry" same section


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

Name County Dist., dir. Elevation (ft.) 7.5' Quad Name
Duck Lake (Lake) Summit County, UT 0.9 mi. SE 9187  Lyman Lake 
Bear River Smiths Fork Trail (Trail) Summit County, UT 1.8 mi. S 9502  Lyman Lake 
East Fork Blacks Fork Guard Station (Locale) Summit County, UT 2.8 mi. S 9311  Lyman Lake 
Middle Fork Blacks Fork (Stream) Summit County, UT 2.4 mi. NW   Red Knob 
West Fork Blacks Fork (Stream) Summit County, UT 2.8 mi. N   Explorer Peak 
East Fork Blacks Fork (Stream) Summit County, UT 2.8 mi. N   Mount Lovenia 
Steel Creek Park (Park) Summit County, UT 2.4 mi. E 10076  Lyman Lake 
Little East Fork (Stream) Summit County, UT 3.5 mi. S   Mount Lovenia 
Brush Creek (Stream) Summit County, UT 2.7 mi. W   Red Knob 
Mansfield Meadows (Flat) Summit County, UT 3.2 mi. SE 10227  Bridger Lake 
Organization Camp Recreation Site (Park) Summit County, UT 3.4 mi. NW 9334  Lyman Lake 
Old Blacks Fork Commissary (Locale) Summit County, UT 4 mi. N 8846  Lyman Lake 
Little Lyman Lake Campground (Locale) Summit County, UT 3.4 mi. W 9289  Lyman Lake 
Lyman Lake (Reservoir) Summit County, UT 3.5 mi. W 9318  Lyman Lake 
Little Lyman Lake (Reservoir) Summit County, UT 3.5 mi. W 9285  Lyman Lake 
Steel Creek Commissary Ruins (Locale) Summit County, UT 3.9 mi. NE 9561  Bridger Lake 
Bald Mountain (Summit) Summit County, UT 4.5 mi. SE 11756  Mount Lovenia 
Hewinta Guard Station (Locale) Summit County, UT 4.1 mi. NE 9492  Bridger Lake 
Meeks Cabin Reservoir (Reservoir) Summit County, UT 4.9 mi. N 8747  Lyman Lake 
The Woodpile (Woods) Summit County, UT 4 mi. W 9489  Elizabeth Mountain 


Taxon Links for species Polygonum douglasii  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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