Strophostyles leiosperma, known as slickseed fuzzybean, or smoothseed / small-flower wildbean is a species of herbaceous, vining legume native to the central to western U.S. It occurs west to Colorado and New Mexico, east to Louisiana, south to Mexico, and north to Minnesota. It is most easily distinguished from the other two Strophostyles species by the abundance of small silky hairs on its leaves and pods, and small pea-shaped flowers with a much reduced keel that is largely hidden by the wing petals. This species is an annual to short-lived perennial. All parts tend to be smaller for S. leiosperma in general than its congeners, and it is a more diminutive plant overall. The leaflets are typically thin and rarely lobed (never deeply lobed). Unlike its congeners, its seeds rarely have a waxy, hairy covering, and it tends to occur in drier sites. Likewise, the specific epithet leiosperma means "smooth seed." It is also the most likely of these species to be capable of self-fertilization. ''S. leiosperma'' flower & unripe pod
No narrative description available for this taxon yet.
⚠ sources differ — GIFT: herb · TRY: Vine, Forb/herb
Woodinessnon-woody
Physiology & chemistry1
Photosynthetic pathwayC3
05DNA & barcoding43 specimens
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 Strophostyles leiosperma has left across the world's sequence archives.
At a glance
DNA specimens43
Marker genes5
GenBank sequences10
eDNA detections39
Countries2
The DNA barcodea real sequence read deposited for this species
Strophostyles leiosperma from USA small subunit ribosomal RNA gene, partial sequence; internal transcribed spacer 1 and 5.8S ribosomal RNA gene, complete sequence; and internal transcribed spacer 2, partial sequence
Marker genes sequenced
★ 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.
★matK3★rbcL3★rbcLa★ITS4★ITS2
plant barcodefungal barcode
06Genome at a glanceCCDB
The complete instruction manualStrophostyles leiosperma carries — its genome. We read it from three angles — how big it is, how the DNA is packed into chromosomes, and how completely it has been sequenced — and explain how to read each value as you go.
Chromosomes & ploidyhow the DNA is packaged
2n is the full chromosome count in a normal body cell; n is a gamete (egg or sperm), which carries half. Ploidy is how many complete chromosome sets each cell holds — 2× (diploid) is typical for animals, while higher levels (polyploidy) are common in plants. Click any value below to see the underlying records and sources.
Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references
2n 223×CCDB · ipcn-api-dl · CCDB · kew
CCDB · ipcn-api-dl — Kumari, S. & S. S. Bir. 1990. Karyomorphological evolution in Papilionaceae. J. Cytol. Genet. 25: 173–219.
CCDB · ipcn-api-dl — Mercado-Ruaro, P. & A. Delgado-Salinas. 1998. Karyotypic studies on species of Phaseolus (Fabaceae: Phaseolinae). Amer. J. Bot. 85(1): 1–9.
How far back this lineage goes — and how we know. Everything here is measured in Ma, short for “mega-annum”: millions of years ago. The chart reads left to right like a calendar of the Earth, from the deep past on the left to today at the right edgetop to bottom like a core drilled through the Earth, from the deep past at the top down to today at the bottom.
At a glance
DNA clock origin0.64 Ma TimeTree
When this lineage existed
How to read this: the coloured strip along the bottomdown the left is the geological calendar — the standard epochs (Pliocene, Pleistocene…) every museum uses, shown so you can see which chapter of Earth's history this lineage lived in. This lineage is a young one, so the strip is zoomed in to epochs — the finer subdivisions inside a period. The orange marker is the DNA clock: DNA accumulates mutations at a roughly steady rate, so comparing this species' DNA with its relatives estimates when the lineage split off — independently of any fossil.
DNA clock origin
08Occurrence & distribution
Record type1 476 records
Wild obs. + sensor589
Museum / vouchered884
Other3
Origin
Native2
Range
Area of Occupancy AOO4 604 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 accuracy77% within 1 km
≤100 m 322≤1 km 41≤10 km 9>10 km 101
473 georeferenced · 116 without coordinates
Open the mapobservation + sensor589
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 accuracy30% within 1 km
≤100 m 31≤1 km 123≤10 km 296>10 km 55
505 georeferenced · 379 without coordinates
Open the institutions mapphysical evidence884
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 institutions53 of 76 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Wuzhou, CN
228
Fort Worth, US
63
Saint Louis, US
60
Bronx, US
51
Austin, US
46
St. Paul, US
42
Chapel Hill, US
29
Pittsburg, US
25
Chadron, US
24
Madison, US
19
DOI/NPS, Colonial National Historical Parklocation not on record
17
Lincoln, US
17
Jena Microbial Resource Collectionlocation not on record
16
Emporia, US
14
Chongqing Museumlocation not on record
12
US
12
Bangkok, TH
11
Texas Lutheran Universitylocation not on record
9
Lubbock, US
7
Mississippi State, US
7
Jackson, US
7
University of Stellenboschlocation not on record
6
Spearfish, US
6
DOI/NPS, Greenbelt Parklocation not on record
6
Bloomington, US
6
Kirksville, US
5
Little Rock, US
5
Fayetteville, US
5
Tuscaloosa, US
5
BAYLUlocation not on record
5
Musee des Dinosaures d'Esperaza (Aude)location not on record
5
Philadelphia, US
5
Columbus State Universitylocation not on record
4
James F. Matthews Center for Biodiversity Studieslocation not on record
4
Philadelphia, US
4
GB
4
University of Southern Mississippilocation not on record
4
Tampa, US
3
San Angelo, US
3
College Park, US
3
China Agricultural Universitylocation not on record
3
DOI/NPS, Mississippi National River & Recreation Arealocation not on record
3
Columbia, US
2
Claremont, US
2
Clemson, US
2
Jefferson City, US
2
LINUlocation not on record
2
New Haven, US
2
Salvador, BR
2
Burlington, US
2
Pomona Collegelocation not on record
2
Denver, US
2
Springfield, US
2
Oskarshamn, SE
2
Beijing, CN
2
EL PASO, US
2
Chicago, US
2
ASUlocation not on record
2
Durham, US
2
Dekalb, US
2
Conway, US
1
Davenport, US
1
University of Alberta Museumslocation not on record
1
Fairfax, US
1
Moscow, US
1
Canadian Department of Agriculturelocation not on record
1
UMKClocation not on record
1
Boise, US
1
Lord Fairfax Community Collegelocation not on record
1
Riverside, US
1
Edmonton, CA
1
Stephenville, US
1
McWane Science Centerlocation not on record
1
Weber State Universitylocation not on record
1
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record
1
Brookings, US
1
76 institutions · 862 of 884 vouchered records shown · 8 without an institution code
09Environmental DNA39 detections
Where the DNA of Strophostyles leiosperma 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 found39
Studies independent surveys1
Countries1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 39 detections have coordinates
Open the map1 country0
Lakeshore.
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.
Modelled climatemodelled
−15°Ctemperature across detection sites+40°C
Temperature median12.5 °C 12.5–23.7
Seasonal swing summer↔winter27.0 °C
Max temp (day)18.4 °C 18.4–29.6
Min temp (night)8.20 °C 8.20–18.6
Precipitation79.6 mm/mo 79.6–101
Air humidity57.3 % 57.2–58.0
Moisture balance-38.4 mm/mo -51.3–-38.4
Vapour deficit733 Pa 733–1,244
Wind speed5.80 m/s 2.90–5.80
Cloud cover36.7 % 34.9–37.1
CHELSA 1981–2010, ~9 km grid, at location & month of 19 detection points · median with p10–p90 · reflects where sampling happened, not only the true niche
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↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility1 476 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI39 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics43 specimens↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
PloiDBPloidy Databasegenome & karyotype
GLoBIGlobal Biotic Interactionsbiotic interactions↗