Malus ioensis
(Alph.Wood) Britton · speciesAt a glance
Sources12 archives
Databases and archives Malus ioensis's data was compiled from.
WikipediaWikimedia Foundation4 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility649 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI8 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics8 specimens↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
GoaTGenomes on a Tree · Sangergenome & karyotype↗
PloiDBPloidy Databasegenome & karyotype
WikidataWikimedia Foundationstructured facts↗Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
Malus ioensis, known as the Iowa crab or prairie crabapple, is a species of crabapple tree native to the United States. The most common variety, Malus ioensis var. ioensis, is found primarily in the prairie regions of the upper Mississippi Valley. Another variety, Malus ioensis var. texana, or the Texas crabapple, is found only in a small region of central Texas.Malus ioensis at the USDA Natural Resources Conservation Service The Iowa crab can grow up to 35 feet (10 m) in height. It bears white or pink flowers in the summer and small apple-like berries in the fall.Malus ioensis at the University of Texas at Austin Lady Bird Johnson Wildflower Center Various wildlife consume the fruit.
No narrative description available for this taxon yet.
Size & morphology4
Life cycle & reproduction26
Diet & foraging1
Habitat & environment24
Physiology & chemistry20
Uses & economy16
Other traits7
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 Malus ioensis has left across the world's sequence archives.
At a glance
★ 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.
The complete instruction manual Malus ioensis 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.
Genome sizehow big the whole instruction manual is
Measured in base pairs (bp) — the individual letters of DNA (human ≈ 3.2 Gb, a bacterium a few million). The chart places this genome on a logarithmic scale — each step to the right is ten times bigger — among reference organisms. Across species a bigger genome loosely tracks with larger cells, slower growth and lower-energy lifestyles (powered flight favours small genomes) — yet it does not imply more genes or a more advanced organism (the long-standing C-value paradox).
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.
2n 343×GoaT · Kew Plant DNA C-values Database · CCDB · book-atlas-flowering-plants · CCDB · kew
2n 512×GoaT · Kew Plant DNA C-values Database · CCDB · kew
diploid1×GoaT · Kew Plant DNA C-values Database
diploid inferred1×PloiDB · genus-scale
Sequencing statusassembly quality — how far to trust these numbers
Assembly level tells you how finished the sequence is — from fragmented contigs, through scaffolds, up to a full chromosome-level assembly. BUSCO % estimates completeness: the share of genes expected to be present that were actually found. These describe the data quality, not the organism.
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
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.
Record type649 records
Origin
Range
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
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.
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Holding institutions48 of 58 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| Saint Louis, US | 116 |
| Wuzhou, CN | 60 |
| Bloomington, US | 33 |
| Toronto, CA | 27 |
| Bronx, US | 23 |
| Paris, FR | 18 |
| Chicago, US | 13 |
| Green Bay, US | 11 |
| Emporia, US | 11 |
| Dekalb, US | 9 |
| Davenport, US | 9 |
| Madison, US | 9 |
| Austin, US | 9 |
| Museum of the Rockieslocation not on record | 8 |
| Fort Worth, US | 8 |
| Tampa, US | 6 |
| GB | 6 |
| Chongqing Museumlocation not on record | 5 |
| Philadelphia, US | 4 |
| Whitewater, US | 4 |
| Bangkok, TH | 4 |
| Burlington, US | 3 |
| Canadian Department of Agriculturelocation not on record | 3 |
| Vancouver, CA | 2 |
| Kirksville, US | 2 |
| Logan, US | 2 |
| Chicago, US | 2 |
| Chadron, US | 2 |
| Ann Arbor, US | 2 |
| University of Stellenboschlocation not on record | 2 |
| Rotorua, NZ | 2 |
| Decorah, US | 1 |
| Lincoln, US | 1 |
| Conway, US | 1 |
| Waverly, US | 1 |
| Mexico City, MX | 1 |
| Springfield, US | 1 |
| College Park, US | 1 |
| Kew, GB | 1 |
| Provo, US | 1 |
| Pittsburg, US | 1 |
| Auckland, NZ | 1 |
| Moscow, US | 1 |
| DOI/NPS, Greenbelt Parklocation not on record | 1 |
| Portland, US | 1 |
| DOI/NPS, Selma to Montgomery National Historic Traillocation not on record | 1 |
| Musee des Dinosaures d'Esperaza (Aude)location not on record | 1 |
| ASUlocation not on record | 1 |
| Denton, US | 1 |
| Claremont, US | 1 |
| University of New Hampshirelocation not on record | 1 |
| Fayetteville, US | 1 |
| LINUlocation not on record | 1 |
| Chicago, US | 1 |
| Jackson, US | 1 |
| Edmonton, CA | 1 |
| St. Paul, US | 1 |
| Little Rock, US | 1 |
Where the DNA of Malus ioensis 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
Where its DNA was found
How strong is each trace?
Modelled climatemodelled
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.