Collinsia verna (blue-eyed mary), Muskingum County, Ohio Collinsia verna, or blue-eyed Mary, is a winter annual that is native to the eastern and central parts of North America but has become endangered in the states of New York and Tennessee. The flowers are bicolored white and blue. It is a plant of valley bottoms and moist bottom slopes, in areas with moderate lighting and requires some shade.
No narrative description available for this taxon yet.
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 Collinsia verna has left across the world's sequence archives.
At a glance
DNA specimens2
Marker genes4
GenBank sequences7
eDNA detections3
Countries1
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.
★matK3★rbcL1★ITS3★ITS2
plant barcodefungal barcode
06Genome at a glanceCCDB · GoaT
The complete instruction manualCollinsia verna 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
Genome size4 352 100 000 bp
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).
BACTERIUM Carsonella ruddii0.00016 Gb
FUNGUS0.04 Gb
INSECT0.25 Gb
HUMAN3.2 Gb
THIS GENOME Collinsia verna4.35 Gb
WHEAT17 Gb
FERN Tmesipteris160.45 Gb
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.
CCDB · ipcn-api-dl — Greenlee, J. K. & K. S. Rai. 1986. Interspecific hybridization and karyotype analysis in two species in the genus Collinsia. Cytologia 51: 631–636.
CCDB · book-atlas-flowering-plants
CCDB · kew — Greenlee JK, Rai KS, Floyd AD. 1984. Intraspecific variation in nuclear DNA content in Collinsia verna Nutt (Scrophulariaceae). Heredity 52: 235-242.
n 71×CCDB · Cave1956
CCDB · Cave1956 — Garber
Ploidy records — measured levels and diploid/polyploid inferences · click for sources
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 origin3.62 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 type2 986 records
Wild obs. + sensor2 644
Museum / vouchered342
Origin
Native1
Range
Area of Occupancy AOO4 840 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 accuracy72% within 1 km
≤100 m 1 333≤1 km 285≤10 km 116>10 km 509
2 243 georeferenced · 401 without coordinates
Open the mapobservation + sensor2 644
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 accuracy43% within 1 km
≤100 m 31≤1 km 67≤10 km 124>10 km 6
228 georeferenced · 114 without coordinates
Open the institutions mapphysical evidence342
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 institutions39 of 52 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Chongqing Museumlocation not on record
98
Saint Louis, US
38
Bloomington, US
36
Wuzhou, CN
16
Knoxville, US
16
Philadelphia, US
13
GB
10
Dekalb, US
8
Chicago, US
8
Chapel Hill, US
8
Blacksburg, US
7
Bronx, US
7
Flagstaff, US
5
Fort Worth, US
5
Bangkok, TH
4
ASUlocation not on record
4
Richmond, US
3
Adam Mickiewicz University in Poznańlocation not on record
2
Kirksville, US
2
LDlocation not on record
2
James F. Matthews Center for Biodiversity Studieslocation not on record
2
Mexico City, MX
2
Burlington, US
2
BAYLUlocation not on record
2
Phoenix, US
2
Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record
2
Museum of the Rockieslocation not on record
2
Davenport, US
2
LINUlocation not on record
2
Little Rock, US
2
Northridge, US
1
Fairfax, US
1
Oskarshamn, SE
1
GAlocation not on record
1
Ann Arbor, US
1
Minia, EG
1
Columbia, US
1
College Park, US
1
Jefferson City, US
1
Denver, US
1
Chicago, US
1
China Agricultural Universitylocation not on record
1
Fayetteville, US
1
Riverside, US
1
Madison, US
1
Lincoln, US
1
New Haven, US
1
Morgantown, US
1
Institut und Museum fuer Geologie und Palaeontologielocation not on record
1
Conway, US
1
Staten Island, US
1
Canadian Department of Agriculturelocation not on record
1
52 institutions · 334 of 342 vouchered records shown · 8 without an institution code
09Environmental DNA3 detections
Where the DNA of Collinsia verna 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 found3
Studies independent surveys1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 3 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↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility2 986 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI3 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics2 specimens↗
NCBIUS National Library of Medicinesequences↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
GoaTGenomes on a Tree · Sangergenome & karyotype↗
PloiDBPloidy Databasegenome & karyotype
GLoBIGlobal Biotic Interactionsbiotic interactions↗