Asclepias asperula, commonly called antelope horns milkweed or spider milkweed, is a species of milkweed native to the Southwestern United States and northern Mexico.
No narrative description available for this taxon yet.
Compounds documented for Asclepias asperula across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").
A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Asclepias asperula has left across the world's sequence archives.
At a glance
DNA specimens1
Marker genes1
GenBank sequences3
eDNA detections1
The DNA barcodea real sequence read deposited for this species
★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.
★rbcL3
plant barcode
08Occurrence & distribution
Record type17 785 records
Wild obs. + sensor16 787
Museum / vouchered972
Other26
Origin
Native2
Range
Area of Occupancy AOO24 224 km²
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy89% within 1 km
≤100 m 9 854≤1 km 1 430≤10 km 530>10 km 840
12 654 georeferenced · 4 133 without coordinates
Open the mapobservation + sensor16 787
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Coordinate accuracy46% within 1 km
≤100 m 70≤1 km 107≤10 km 161>10 km 46
384 georeferenced · 588 without coordinates
Open the institutions mapphysical evidence972
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
10Collections & institutions
Holding institutions62 of 87 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Bronx, US
166
Flagstaff, US
73
Austin, US
67
Fort Worth, US
44
Philadelphia, US
44
ASUlocation not on record
43
Logan, US
42
Musee des Dinosaures d'Esperaza (Aude)location not on record
34
Riverside, US
32
EL PASO, US
29
Claremont, US
28
Lubbock, US
27
Albuquerque, US
27
Phoenix, US
26
Denver, US
22
San Angelo, US
20
DOI/NPS, Colonial National Historical Parklocation not on record
20
Chicago, US
14
Saint Louis, US
13
Provo, US
11
Chongqing Museumlocation not on record
11
BAYLUlocation not on record
10
Orem, US
9
Mexico City, MX
8
Bloomington, US
8
Hermosillo, MX
7
DOI/NPS, Greenbelt Parklocation not on record
7
Tampa, US
6
Henderson, US
5
University of Stellenboschlocation not on record
5
Austin, US
5
Denton, US
5
USFSlocation not on record
5
Davis, US
5
Texas Lutheran Universitylocation not on record
5
US
4
Corvallis, US
4
Santa Barbara, US
4
Grand Junction, US
4
San Jose State University, Museum of Birds and Mammalslocation not on record
4
Boise, US
3
Durango, US
3
Moscow, US
3
Angwin, US
3
San Luis Obispo, US
3
Stephenville, US
2
Eastern Nevada Landscape Coalitionlocation not on record
2
Northridge, US
2
San Diego, US
2
Los Angeles, US
2
Champaign, US
2
Madison, US
2
Pittsburg, US
2
Bangkok, TH
1
Dekalb, US
1
Burlington, US
1
Clemson, US
1
DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record
1
Durango, MX
1
Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahualocation not on record
1
Giardini Botanici Hanburylocation not on record
1
Appalachian State Universitylocation not on record
1
Minia, EG
1
Severin-McDaniel Insect Collectionlocation not on record
1
Tempe, US
1
Canadian Department of Agriculturelocation not on record
1
AUAlocation not on record
1
Weber State Universitylocation not on record
1
Bandelier National Monumentlocation not on record
1
Mississippi State, US
1
Guasave, MX
1
Bureau of Land Managementlocation not on record
1
Irvine, US
1
Mexico City, MX
1
Zapopan, MX
1
Beijing, CN
1
US
1
Plocation not on record
1
Kew, GB
1
Durham, US
1
Pocatello, US
1
SEINetlocation not on record
1
Taipei, TW
1
Cslocation not on record
1
Emporia, US
1
Pomona Collegelocation not on record
1
Mérida, MX
1
87 institutions · 968 of 972 vouchered records shown · 4 without an institution code
09Environmental DNA1 detections
Where the DNA of Asclepias asperula was picked up in samples of water, soil or air — nobody saw the organism, only its DNA left behind. A trace is a clue that the species was near, not a confirmed sighting.
Signal
Detections DNA found1
Studies independent surveys1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 1 detections have coordinates
Open the map0 countries0
How strong is each trace?
DNA read depthRead counts were not reported for this species — the map shows presence only, not how strong each trace was.
How to read this: each dot is one detection of this species' DNA in an environmental sample. The confidence meter weighs how many independent studies and places back up the signal — one detection in one study is a hint; many across several studies is solid. Records dated before 2008 (when eDNA methods began) are treated as likely mislabeled and left off the map.
WikipediaWikimedia Foundation2 languages↗
GBIFGlobal Biodiversity Information Facility17 785 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI1 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics1 specimens↗
NCBIUS National Library of Medicinesequences↗
NPASSNat. Product Activity & Species Sourcecompounds↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗