Grusonia grahamii

(Engelm.) H.Rob. · species

image placeholder — illustration coming later

Plantae/Tracheophyta/Magnoliopsida/Caryophyllales/Cactaceae/Grusonia

At a glance

Occurrence records160

Data sources7

Biological traits10

DNA specimens0

eDNA detections4

Sources7 archives

Databases and archives Grusonia grahamii's data was compiled from.

WikipediaWikimedia Foundation4 languages↗

BioWikiNetmultilingual Wikipediamultilingual↗

GBIFGlobal Biodiversity Information Facility160 records↗

ENAEuropean Nucleotide Archive · EMBL-EBI4 eDNA detections↗

GRIN TaxonomyUSDA-ARSdistribution & uses↗

CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗

GLoBIGlobal Biotic Interactionsbiotic interactions↗

On this page5 sections

Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.

NarrativeWikipediaarticle

Traits & measurements3 literature sources10 traits

Occurrence & distributionGBIF160 records

Environmental DNA1 datasets · 1 countries4 detections

Genome at a glanceCCDB2n = 44

01Narrative

Grusonia grahamii is a species of plant in the family Cactaceae. It is endemic to Texas and New Mexico in the United States and Chihuahua and Durango in Mexico.

No narrative description available for this taxon yet.

02Traits & measurements

SourcesWCVPGIFTTRY

Life cycle & reproduction2

Life formsucculent subshrub

Life spanperennial

Diet & foraging1

Parasiteindependent

Habitat & environment6

Aquaticterrestrial

Climatedesert or dry shrubland

Climberself-supporting

Epiphyteterrestrial

Growth formshrub

Woodinesswoody

Other traits1

Plant support typefree-standing

05DNA & barcoding4 eDNA hits

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 Grusonia grahamii has left across the world's sequence archives.

At a glance

eDNA detections4

Countries1

06Genome at a glanceCCDB

The complete instruction manual Grusonia grahamii 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.

Chromosomes2n = 44 n = 22

Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references

2n 441×CCDB · eflora

CCDB · eflora

n 112×CCDB · ipcn-api-dl · CCDB · book-ipcn75-78

CCDB · ipcn-api-dl — Weedin, J. F. & A. M. Powell. 1978. Chromosome numbers in Chihuahuan desert Cactaceae. Trans-Pecos Texas. Amer. J. Bot. 65: 531–537.

CCDB · book-ipcn75-78 — Weedin & Powell 1978a

08Occurrence & distribution

Record type160 records

Wild obs. + sensor106

Museum / vouchered54

Range

Area of Occupancy AOO516 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 accuracy78% within 1 km

≤100 m 54≤1 km 18≤10 km 1>10 km 19

92 georeferenced · 14 without coordinates

Open the mapobservation + sensor106

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 accuracy71% within 1 km

≤100 m 14≤1 km 3≤10 km 1>10 km 6

24 georeferenced · 30 without coordinates

Open the institutions mapphysical evidence54

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 institutions9 of 10 geolocated

Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.

Institution	Specimens
ASUlocation not on record	21
Mexico City, MX	13
Phoenix, US	5
Guasave, MX	5
Bronx, US	5
Claremont, US	1
Albuquerque, US	1
Chicago, US	1
Juriquilla, MX	1
Saint Louis, US	1

10 institutions · 54 of 54 vouchered records shown

09Environmental DNA4 detections

Where the DNA of Grusonia grahamii 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 found4

Studies independent surveys1

Countries1

Signal confidence: weakweighed across independent studies, places & mapped detections

Where its DNA was found

0 of 4 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 median15.7 °C 15.7–15.7

Seasonal swing summer↔winter9.60 °C

Max temp (day)22.0 °C

Min temp (night)9.00 °C

Precipitation34.7 mm/mo

Air humidity50.9 %

Moisture balance-93.3 mm/mo

Vapour deficit884 Pa

Wind speed4.10 m/s

Cloud cover25.5 %

CHELSA 1981–2010, ~9 km grid, at location & month of 2 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.

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