Alstonia congensis

Engl. · species

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Plantae/Tracheophyta/Magnoliopsida/Gentianales/Apocynaceae/Alstonia

At a glance

Occurrence records495

Data sources10

Biological traits19

DNA specimens0

eDNA detections0

Sources10 archives

Databases and archives Alstonia congensis's data was compiled from.

WikipediaWikimedia Foundation4 languages↗

BioWikiNetmultilingual Wikipediamultilingual↗

GBIFGlobal Biodiversity Information Facility495 records↗

LOTUSNatural Products (Wikidata)compounds↗

NPASSNat. Product Activity & Species Sourcecompounds↗

GRIN TaxonomyUSDA-ARSdistribution & uses↗

Open Tree of LifeOpenTreephylogeny backbone↗

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

PloiDBPloidy Databasegenome & karyotype

WikidataWikimedia Foundationstructured facts↗

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 sources19 traits

Chemical compositionLOTUS · NPASS24 compounds

Occurrence & distributionGBIF495 records

Genome at a glanceCCDB2n = 88

01Narrative

Alstonia congensis, is a tree within the Apocynaceae family and one of two African species within the Alstonia genus, the other being the Alstonia boonei De Wild. Both have similar morphological characteristics. The root and stem bark contains the alkaloids echitamine and echitamidine.

No narrative description available for this taxon yet.

02Traits & measurements

SourcesWCVPGIFTTRY

Size & morphology2

Plant height20 m

⚠ sources differ — GIFT: 20 m · TRY: 35 m

Plant height max25 m

Life cycle & reproduction6

Deciduousnessevergreen

Flowering endMay

Flowering startMay

Life formtree

Life spanperennial

Raunkiær life formphanerophyte

Diet & foraging1

Parasiteindependent

Habitat & environment6

Aquaticterrestrial

Climatewet tropical

Climberself-supporting

Epiphyteterrestrial

Growth formtree

Woodinesswoody

Physiology & chemistry3

Nitrogen fixingnon_nitrogen_fixer

Photosynthetic pathwayC3

Wood density326 mg/cm³

Other traits1

Plant support typefree-standing

03Chemical composition24 compounds

Compounds documented for Alstonia congensis across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").

Compound class profile5 classes

Colensane and Clerodane diterpenoids7

Corynanthe type6

Corynanthe type $ Strychnos type4

Oleanane triterpenoids2

Aromadendrane sesquiterpenoids1

Documented compounds24 total

Tissue Source Quantified only

Compound	Amount	Source
(+)-Tubotaiwine	present	LOTUS
(1aR,4aR,7S,7aS,7bR)-1,1,7-Trimethyl-4-methylidenedecahydro-1H-cyclopropa[e]azulen-7-ol	present	NPASS
(1S,3R,4S,7R,9R,10R)-7-(furan-3-yl)-3-hydroxy-9-methyl-6,16-dioxatetracyclo[8.7.0.01,14.04,9]heptadec-13-ene-5,15-dione	present	NPASS
(Z)-2-[2-[(1S,2R,4aR,8aR)-5-(hydroxymethyl)-1,2,4a-trimethyl-2,3,4,7,8,8a-hexahydronaphthalen-1-yl]ethyl]but-2-ene-1,4-diol	present	NPASS
[(4aR,5S,6R,8aR)-5,6,8a-trimethyl-5-[2-(5-oxo-2H-furan-4-yl)ethyl]-3,4,4a,6,7,8-hexahydronaphthalen-1-yl]methyl acetate	present	NPASS
[(4aR,5S,6R,8aR)-5-[2-[(2R)-2-methoxy-5-oxo-2H-furan-3-yl]ethyl]-5,6,8a-trimethyl-3,4,4a,6,7,8-hexahydronaphthalen-1-yl]methyl acetate	present	NPASS
[(4aR,5S,6R,8aS)-8a-(acetyloxymethyl)-5-[2-(furan-3-yl)ethyl]-5,6-dimethyl-3,4,4a,6,7,8-hexahydronaphthalen-1-yl]methyl acetate	present	NPASS
[(Z)-5-[(1S,2R,4aR,8aR)-5-(acetyloxymethyl)-1,2,4a-trimethyl-2,3,4,7,8,8a-hexahydronaphthalen-1-yl]-3-(acetyloxymethyl)pent-2-enyl] acetate	present	NPASS
Akuammicine	present	LOTUS
Akuammidine	present	LOTUS

05DNA & barcodingmolecular

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 Alstonia congensis has left across the world's sequence archives.

At a glance

06Genome at a glanceCCDB

The complete instruction manual Alstonia congensis 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 = 88 n = 44

Ploidypolyploid inferred

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

2n 881×CCDB · book-fedorov

CCDB · book-fedorov — Marigenot S., Mange- ' not G. 1962

Ploidy records — measured levels and diploid/polyploid inferences · click for sources

polyploid inferred1×PloiDB · family-scale

PloiDB · family-scale — chromEvol; reliability=1.000 ↗

08Occurrence & distribution

Record type495 records

Wild obs. + sensor271

Museum / vouchered199

Other25

Range

Area of Occupancy AOO808 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 accuracy80% within 1 km

≤100 m 3≤1 km 1≤10 km 1

5 georeferenced · 266 without coordinates

Open the mapobservation + sensor271

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 3

3 georeferenced · 196 without coordinates

Open the institutions mapphysical evidence199

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 institutions8 of 22 geolocated

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

Institution	Specimens
MeiseBGlocation not on record	17
LBVlocation not on record	17
Saint Louis, US	16
Herbier National du Gabonlocation not on record	14
BRLUlocation not on record	11
Institut de Recherche Agronomique de Guinée (IRAG)location not on record	8
HNBlocation not on record	7
WAGlocation not on record	7
LSF/FSA/UAClocation not on record	6
Brussels, BE	5
Yaoundé, CM	4
Leiden University Medical Centerlocation not on record	3
Paris, FR	3
Kew, GB	3
Stockholm, SE	2
LSFlocation not on record	2
IPHAMETRAlocation not on record	2
Tampa, US	2
University of Santo Tomas Museumlocation not on record	1
Plocation not on record	1
Philadelphia, US	1
San Jose State University, Museum of Birds and Mammalslocation not on record	1

22 institutions · 133 of 199 vouchered records shown · 66 without an institution code

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