Utah Valley University Herbarium


Accession # 10953 
Family - UVUAPG III FamilyCronquist FamilyA Utah Flora
Species Asclepias macrosperma Eastw.
Common name   bigseed milkweed
J.G. Harris   3832  
Coll. Date 04 June 2005 
United States
Wayne County
Locality Dirty Devil River, at Pasture Canyon.
     Elev.: 4215 ft. (1285 m.)
Habitat Notes Navajo Sandstone outcrops. 
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° 20'  35" N, 110° 32'  30" 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):

     Asclepias involucrata Engelm. ex Torr.

     Asclepias macrosperma Eastw.

Common Name(s): dwarf milkweed, largeseed milkweed.

Taxonomic Hierarchy: (ITIS TSN=30275, click for more information and references)

        Kingdom: Plantae
            Subkingdom: Tracheobionta
                Division: Magnoliophyta
                    Class: Magnoliopsida
                        Subclass: Asteridae
                            Order: Gentianales
                                Family: Asclepiadaceae
                                    Genus: Asclepias
                                        Species: Asclepias involucrata


Available images of this specimen (click to view):
specimen image: 10953s4.jpg

Images of other samples of the same species:
specimen image: 05960s2.jpg 
specimen image: 09477s2.jpg 
specimen image: 10491s2.jpg 
specimen image: 10674s3.jpg 
specimen image: 12674d1.jpg 
specimen image: 12674c1.jpg 
specimen image: 12674s1.jpg 
specimen image: 16890c1.jpg 
specimen image: 16890b1.jpg 
specimen image: 16890a1.jpg 
specimen image: 16890s1.jpg 

Nearby Accessions

Other accessions in the database collected near this one:

Accession Name Dist., dir.
10952 Amsonia tomentosa  var. stenophylla   "woolly bluestar" same section
10951 Astragalus desperatus  var. desperatus   "rimrock milkvetch" same section
10950 Astragalus kentrophyta  var. coloradoensis   "Colorado spiny milkvetch" same section
10956 Sphaeralcea leptophylla      "scale-leaf globemallow" same section
10955 Stephanomeria tenuifolia  var. tenuifolia   "narrow-leaf wirelettuce" same section
10954 Tiquilia latior      "matted crinklemat" same section


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

Name County Dist., dir. Elevation (ft.) 7.5' Quad Name
Pasture Canyon (Valley) Wayne County, UT 452 ft. W   Point of Rocks East 
Buck Canyon (Valley) Wayne County, UT 2347 ft. NW   Point of Rocks East 
Lower Sand Slide (Slope) Wayne County, UT 2694 ft. W 4275  Angel Cove 
Robbers Roost Canyon (Valley) Wayne County, UT 1.6 mi. S   Angel Point 
South Fork Robbers Roost Canyon (Valley) Wayne County, UT 1.8 mi. SE   Robbers Roost Flats 
Angel Cove (Basin) Wayne County, UT 2.5 mi. S 4239  Angel Cove 
Angel Cove Spring (Spring) Wayne County, UT 2.8 mi. S 4249  Angel Cove 
Beaver Canyon (Valley) Wayne County, UT 3 mi. S   Baking Skillet Knoll 
Beaver Wash (Stream) Wayne County, UT 3.1 mi. S   Baking Skillet Knoll 
Upper Sand Slide (Slope) Wayne County, UT 2.6 mi. W 4278  Angel Cove 
Saw Tooth (Cape) Wayne County, UT 3.9 mi. S 4098  Angel Cove 
Hell Hole Swale (Basin) Wayne County, UT 3.6 mi. W 4629  Angel Cove 
Guss Knoll (Summit) Wayne County, UT 3.8 mi. W 4738  Angel Cove 
White Roost Canyon (Valley) Wayne County, UT 4 mi. E   Point of Rocks East 
Angel Point (Ridge) Wayne County, UT 4.3 mi. SE 5122  Angel Point 
No Mans Canyon (Valley) Wayne County, UT 5.2 mi. S   Angel Point 


Taxon Links for species Asclepias macrosperma  Eastw.

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:

Zooming out might reveal more collections in other states.

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