Utah Valley University Herbarium


Accession # 03903 
Family - UVUAPG III FamilyCronquist FamilyA Utah Flora
Species Asclepias asperula (Decne.) Woodson
Common name   spider milkweed
D.M. Barnes   s.n.  
Coll. Date 17 June 1999 
United States
Locality mouth of American Fork Canyon, N side of Alpine Highway; talus slope
Habitat Notes S facing talus slope; Gambel's oak, grasses. 
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° 25'  37" N, 111° 44'  55" W
Township Range T4S, R2E, Sec. 32  
Datum Not recorded
Uncertainty Not calculated
TRS Notes Latitude and longitude were derived from township and range information and may be
inaccurate by as much as 0.7 miles (or 4.2 miles if the section is not given).


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

     Asclepias asperula (Dcne.) Woods.

Common Name(s): antelope horns, antelopehorn milkweed, spider antelope-horns, spider milkweed.

Taxonomic Hierarchy: (ITIS TSN=30247, click for more information and references)

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


Available images of this specimen (click to view):
specimen image: 03903s2.jpg

Images of other samples of the same species:
specimen image: 01582s2.jpg 
specimen image: 02804s2.jpg 
specimen image: 03123s2.jpg 
specimen image: 03217s2.jpg 
specimen image: 05838s2.jpg 
specimen image: 07021s2.jpg 
specimen image: 08505s2.jpg 
specimen image: 09569s2.jpg 
specimen image: 11924c1.jpg 
specimen image: 11924s3.jpg 
specimen image: 11924d1.jpg 

Nearby Accessions

Other accessions in the database collected near this one:

Accession Name Dist., dir.
01782 Amelanchier utahensis      "Utah serviceberry" 1 mi. W
14932 Astragalus utahensis      "Utah milkvetch" 2668 ft. NE
14934 Berberis repens      "Oregongrape" 1.3 mi. NW
13669 Betula occidentalis      "water birch" 1 mi. NW
03902 Brickellia oblongifolia  var. linifolia   "narrow-leaf brickellbush" same section
01775 Cardaria draba  var. repens   "lens-podded whitetop" 1 mi. W
03896 Chaetopappa ericoides      "rose-heath" same section
15341 Chrysothamnus nauseosus      "rubber rabbitbrush" 1992 ft. NE
03899 Cirsium undulatum  var. undulatum   "wavy-leaf thistle" same section
14933 Corallorhiza striata      "striped coralroot" 1.1 mi. NW
05241 Daucus carota  subsp. carota   "Queen Anne's lace" same section
14931 Fritillaria atropurpurea      "leopard-lily" 1.7 mi. W
05243 Gaura parviflora     same section
04354 Glyceria striata      "fowl mannagrass" 1.4 mi. NW
03897 Grindelia squarrosa  var. serrulata   "curlycup gumweed" same section
15302 Hydrophyllum       "waterleaf" 2 mi. S
03901 Lygodesmia grandiflora  var. dianthopsis   "Antelope Island skeleton plant" same section
13670 Malcolmia africana      "African mustard" 1 mi. NW
01797 Melilotus officinalis      "yellow sweetclover" 1 mi. W
03904 Mentzelia dispersa      "bushy blazingstar" same section
02844 Mentzelia rusbyi      "Rusby's blazingstar" same section
15291 Oenothera cespitosa      "tufted evening primrose" same section
05242 Pastinaca sativa      "wild parsnip" same section
01785 Penstemon eatonii  var. eatonii  1 mi. W
01768 Penstemon humilis  var. brevifolius   "short-leaf low beardtongue" 1 mi. W
15339 Populus angustifolia      "narrow-leaf cottonwood" 1992 ft. NE
13668 Populus angustifolia      "narrow-leaf cottonwood" 1 mi. NW
01796 Rosa woodsii      "Woods' rose" 1 mi. W
15301 Smilacina racemosa      "false Solomon's Seal" 1.7 mi. W
15340 Solanum dulcamara      "climbing nightshade" 1992 ft. NE
03906 Stanleya pinnata  var. pinnata   "desert princesplume" same section
15059 Tamarix       "tamarisk" 1902 ft. N
15060 Ulmus pumila      "Siberian elm" same section
14945 Zigadenus       "deathcamas" 1.1 mi. N


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

Name County Dist., dir. Elevation (ft.) 7.5' Quad Name
Utah Valley (Basin) Utah County, UT 2386 ft. N 5250  Lehi 
Cedar Hills (Populated Place) Utah County, UT 1 mi. SW 4958  Lehi 
Pleasant Grove Ditch (Canal) Utah County, UT 0.9 mi. W 4944  Lehi 
Merideth Ditch (Canal) Utah County, UT 1.1 mi. SW 4961  Lehi 
American Fork Canyon (Valley) Utah County, UT 1.3 mi. N   Dromedary Peak 
Nielson Ditch (Canal) Utah County, UT 1.1 mi. NW 5023  Lehi 
Heisetts Hollow (Valley) Utah County, UT 1.5 mi. S   Timpanogos Cave 
Eighty Rod Ditch (Canal) Utah County, UT 1.2 mi. SW 4908  Lehi 
Smooth Canyon (Valley) Utah County, UT 1.5 mi. N   Timpanogos Cave 
The Church of Jesus Christ of Latter Day Saints (Church) Utah County, UT 1.2 mi. W 4961  Lehi 
Preston Canyon (Valley) Utah County, UT 1.7 mi. N   Timpanogos Cave 
East Bench Ditch (Canal) Utah County, UT 1.5 mi. SW 4882  Lehi 
The Church of Jesus Christ of Latter Day Saints (Church) Utah County, UT 1.9 mi. N 5020  Lehi 
Willow Canyon (Valley) Utah County, UT 2 mi. N   Timpanogos Cave 
Cattle Creek (Stream) Utah County, UT 1.6 mi. NE   Timpanogos Cave 
Highland (Populated Place) Utah County, UT 2 mi. NW 4994  Lehi 
Riverside Campground (Locale) Utah County, UT 1.8 mi. NE 5430  Timpanogos Cave 
The Church of Jesus Christ of Latter Day Saints (Church) Utah County, UT 2 mi. NW 4961  Lehi 
The Church of Jesus Christ of Latter Day Saints (Church) Utah County, UT 2.4 mi. S 4725  Lehi 
Manila Church (Church) Utah County, UT 2.4 mi. S 4728  Lehi 


Taxon Links for species Asclepias asperula  (Decne.) Woodson

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.

Note: Printing this page will show all information sequentially.   edit