Polygala rehmannii is a species of flowering plant in the milkwort family (Polygalaceae). It is endemic to areas with an altitude below 1160 m in Southern Africa. It was first described by Robert Chodat in 1893.
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 Polygala rehmannii has left across the world's sequence archives.
At a glance
Marker genes1
GenBank sequences2
eDNA detections2
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.
★rbcL2
plant barcode
07Deep time~4.87 Ma lineage
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 origin4.87 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 type124 records
Wild obs. + sensor21
Museum / vouchered103
Range
Area of Occupancy AOO340 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 12≤1 km 5≤10 km 1>10 km 1
19 georeferenced · 2 without coordinates
Open the mapobservation + sensor21
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 accuracy0% within 1 km
≤10 km 1
1 georeferenced · 102 without coordinates
Open the institutions mapphysical evidence103
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 institutions3 of 6 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Durban, ZA
56
Pretoria, ZA
41
Moscow State Universitylocation not on record
1
Berlin, DE
1
MeiseBGlocation not on record
1
South African National Biodiversity Institutelocation not on record
1
6 institutions · 101 of 103 vouchered records shown · 2 without an institution code
09Environmental DNA2 detections
Where the DNA of Polygala rehmannii 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 found2
Studies independent surveys1
Countries1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 2 detections have coordinates
Open the map1 country0
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 median20.0 °C 20.0–20.0
Seasonal swing summer↔winter14.8 °C
Max temp (day)26.8 °C
Min temp (night)12.9 °C
Precipitation15.6 mm/mo
Air humidity49.2 %
Moisture balance-111 mm/mo
Vapour deficit1,261 Pa
Wind speed2.80 m/s
Cloud cover10.6 %
CHELSA 1981–2010, ~9 km grid, at location & month of 1 detection point · 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.
