Strophanthus welwitschii

(Baill.) K.Schum. · species

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Plantae/Tracheophyta/Magnoliopsida/Gentianales/Apocynaceae/Strophanthus

At a glance

Occurrence records220

Data sources8

Biological traits13

DNA specimens2

eDNA detections1

Sources8 archives

Databases and archives Strophanthus welwitschii's data was compiled from.

WikipediaWikimedia Foundation2 languages↗

BioWikiNetmultilingual Wikipediamultilingual↗

GBIFGlobal Biodiversity Information Facility220 records↗

ENAEuropean Nucleotide Archive · EMBL-EBI1 eDNA detections↗

BOLD SystemsCentre for Biodiversity Genomics2 specimens↗

GRIN TaxonomyUSDA-ARSdistribution & uses↗

Open Tree of LifeOpenTreephylogeny backbone↗

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 sources13 traits

Occurrence & distributionGBIF220 records

Environmental DNA1 datasets · 1 countries1 detections

DNA & barcodingBOLD2 specimens

01Narrative

Strophanthus welwitschii grows as a deciduous shrub or small tree up to 5 m tall, or as a liana up to 8 m long, with a stem diameter up to 10 cm. Its fragrant flowers feature a white turning purple corolla, creamy and red or purple-streaked on the inside. Its habitat is forests or rocky woodlands from 300 m to 1800 m altitude. S. welwitschii is used in local medicinal treatments for respiratory conditions, gonorrhoea and scabies. The plant has been used as arrow poison. Strophanthus welwitschii is native to Democratic Republic of Congo, Tanzania, Angola and Zambia.

No narrative description available for this taxon yet.

02Traits & measurements

SourcesWCVPGIFTTRY

Size & morphology1

Plant height4 m

⚠ sources differ — GIFT: 4 m · TRY: 6.5 m

Life cycle & reproduction4

Deciduousnessdeciduous

Life formscrambling shrub or tree

Life spanperennial

Raunkiær life formphanerophyte

Diet & foraging1

Parasiteindependent

Habitat & environment6

Climateseasonally dry tropical

Climberfacultative

Epiphyteterrestrial

Growth formtree

⚠ sources differ — GIFT: tree · TRY: shrub

Habitat GIFTforest

Woodinesswoody

Physiology & chemistry1

Nitrogen fixingnon_nitrogen_fixer

05DNA & barcoding2 specimens

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 Strophanthus welwitschii has left across the world's sequence archives.

At a glance

DNA specimens2

Marker genes2

eDNA detections1

Countries1

Marker genes sequenced

★ 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.

★matK★rbcLa

plant barcode

08Occurrence & distribution

Record type220 records

Wild obs. + sensor65

Museum / vouchered155

Range

Area of Occupancy AOO572 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 accuracy95% within 1 km

≤100 m 34≤1 km 4≤10 km 1>10 km 1

40 georeferenced · 25 without coordinates

Open the mapobservation + sensor65

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 8>10 km 3

11 georeferenced · 144 without coordinates

Open the institutions mapphysical evidence155

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 13 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	93
Kew, GB	14
Saint Louis, US	6
Pretoria, ZA	4
Paris, FR	4
Instituto de Investigação Científica Tropicallocation not on record	4
Dresden, DE	3
TAFORI-LSRClocation not on record	2
Cape Town, ZA	1
Frankfurt am Main	1
Buffelskloof Private Nature Reserve, Herbariumlocation not on record	1
Centre de Recherche en Sciences Naturelles (CRSN/Lwiro)location not on record	1
South Kensington, GB	1

13 institutions · 135 of 155 vouchered records shown · 20 without an institution code

09Environmental DNA1 detections

Where the DNA of Strophanthus welwitschii 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 found1

Studies independent surveys1

Countries1

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

Where its DNA was found

0 of 1 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 median22.2 °C 22.2–22.2

Seasonal swing summer↔winter7.10 °C

Max temp (day)26.8 °C

Min temp (night)18.4 °C

Precipitation208 mm/mo

Air humidity64.5 %

Moisture balance78.6 mm/mo

Vapour deficit953 Pa

Wind speed1.50 m/s

Cloud cover71.3 %

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.

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