Malus doumeri

A.Chev. · species

image placeholder — illustration coming later

Plantae/Tracheophyta/Magnoliopsida/Rosales/Rosaceae/Malus

At a glance

Occurrence records412

Data sources11

Biological traits27

DNA specimens11

eDNA detections6

Sources11 archives

Databases and archives Malus doumeri's data was compiled from.

WikipediaWikimedia Foundation4 languages↗

BioWikiNetmultilingual Wikipediamultilingual↗

GBIFGlobal Biodiversity Information Facility412 records↗

ENAEuropean Nucleotide Archive · EMBL-EBI6 eDNA detections↗

BOLD SystemsCentre for Biodiversity Genomics11 specimens↗

LOTUSNatural Products (Wikidata)compounds↗

GRIN TaxonomyUSDA-ARSdistribution & uses↗

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

GoaTGenomes on a Tree · Sangergenome & karyotype↗

PloiDBPloidy Databasegenome & karyotype

WikidataWikimedia Foundationstructured facts↗

On this page7 sections

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

NarrativeWikipediaarticle

Traits & measurements2 literature sources27 traits

Chemical compositionLOTUS7 compounds

Occurrence & distributionGBIF412 records

Environmental DNA1 datasets · 1 countries6 detections

DNA & barcodingBOLD11 specimens

Genome at a glanceCCDB · GoaT≈592 Mbp

01Narrative

Malus doumeri is a species in the genus Malus in the family Rosaceae, that resembles Docynia and has been placed in that genus in the past. It is native to temperate and tropical Asia. The fruit is edible. It is also called with the common name Taiwan crabapple, and is arbituted for medicinal properties of skin care.

No narrative description available for this taxon yet.

02Traits & measurements

SourcesGIFTTRY

Size & morphology14

Fruit length47.5 mm

Fruit length max55 mm

Fruit length min40 mm

Fruit width47.5 mm

Fruit width max55 mm

Fruit width min40 mm

Leaf length120 mm

Leaf length max150 mm

Leaf length min90 mm

Leaf width52.5 mm

Leaf width max65 mm

Leaf width min40 mm

Plant height15 m

⚠ sources differ — GIFT: 15 m · TRY: 12.5 m

Seed mass24.7 mg

Life cycle & reproduction5

Deciduousnessdeciduous

Flower length max30 mm

Flower length min25 mm

Life spanperennial

Lifespan years750 years

Habitat & environment6

Climberself-supporting

Elevation max2 000 m

Elevation mean1 500 m

Elevation min1 000 m

Growth formtree

Woodinesswoody

Physiology & chemistry1

Photosynthetic pathwayC3

Other traits1

Plant support typefree-standing

03Chemical composition7 compounds

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

🍽 Used in cooking

Compound class profile3 classes

Chalcones4

Flavones2

Flavonols1

Documented compounds7 total

Tissue Source Quantified only

Compound	Amount	Source
3-Hydroxyphloretin	present	LOTUS
3-Hydroxyphloretin 2'-O-glucoside	present	LOTUS
5-(beta-D-Glucopyranosyloxy)-7-hydroxy-2-phenyl-4H-1-benzopyran-4-one	present	LOTUS
Chrysin	present	LOTUS
Phloretin	present	LOTUS
Phlorizin	present	LOTUS
Quercetin	present	LOTUS

05DNA & barcoding11 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 Malus doumeri has left across the world's sequence archives.

At a glance

DNA specimens11

Marker genes3

eDNA detections6

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★rbcL★ITS

plant barcodefungal barcode

06Genome at a glanceCCDB · GoaT

The complete instruction manual Malus doumeri 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 size≈592 224 627 bp assembly estimate

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

THIS GENOME Malus doumeri0.59 Gb

HUMAN3.2 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.

Chromosomes2n = 34 n = 17

Ploidydiploid inferred

Chromosome records34–342n range34median34mode5records

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

2n 345×CCDB · ipcn-api-dl

CCDB · ipcn-api-dl — Zhao, Z. f., Y. q. Wang & S. f. Huang. 1990. Plant chromosome counts (V). Forest Res. (China) 3: 503–508.

CCDB · ipcn-api-dl — Liang, G. l. & X. l. Li. 1993. Chromosome studies of Chinese species of Malus Mill. Acta Phytotax. Sin. 31: 236–251.

CCDB · ipcn-api-dl — Chen, R. y. 1993. (editor), Chromosome Atlas of Chinese Fruit Trees and Their Close Wild Relatives. Chromosome Atlas Chin. Princ. Econ. Pl. 1.

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

diploid inferred1×PloiDB · genus-scale

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

Sequencing statusassembly quality — how far to trust these numbers

Assembly level tells you how finished the sequence is — from fragmented contigs, through scaffolds, up to a full chromosome-level assembly. BUSCO % estimates completeness: the share of genes expected to be present that were actually found. These describe the data quality, not the organism.

Assembly levelChromosome

08Occurrence & distribution

Record type412 records

Wild obs. + sensor62

Museum / vouchered320

Cultivated / captive3

Fossil1

Other26

Origin

Native6

Range

Area of Occupancy AOO772 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 accuracy100% within 1 km

≤1 km 1

1 georeferenced · 61 without coordinates

Open the mapobservation + sensor62

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 accuracy100% within 1 km

≤1 km 1

1 georeferenced · 319 without coordinates

Open the institutions mapphysical evidence320

Cultivated / Captivenot free-living

A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.

Coordinate accuracy100% within 1 km

≤1 km 1

1 georeferenced · 2 without coordinates

Open the mapnot free-living3

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 institutions21 of 31 geolocated

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

Institution	Specimens
Beijing, CN	78
Paris, FR	59
Nanjing, CN	40
Institute for Agricultural Bacteriology and Fermentation Biologylocation not on record	36
Hangzhou, CN	20
Zhejiang Universitylocation not on record	10
Guangzhou, CN	7
Taipei, TW	7
Guangxi Institute of Traditional Medical and Pharmaceutical Scienceslocation not on record	6
Guilin, CN	6
TAIElocation not on record	6
National Museum of Natural Sciencelocation not on record	6
Kunming, CN	5
Nanjing, CN	4
Xiamen, CN	3
Herbarium of South China Botanical Gardenlocation not on record	3
Taipei, TW	3
Jiangxi Universitylocation not on record	2
Taipei, TW	2
Beijing, CN	2
Nanjing, CN	2
Hangzhou Normal Collegelocation not on record	2
Jiangxi Agricultural Universitylocation not on record	2
Wuhan, CN	2
Saint Louis, US	1
Edinburgh, GB	1
Guangzhou, CN	1
Minia, EG	1
FJFClocation not on record	1
Chengdu, CN	1
Guiyang, CN	1

31 institutions · 320 of 320 vouchered records shown

Cultivated / Captivenot free-living

A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.

09Environmental DNA6 detections

Where the DNA of Malus doumeri 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 found6

Studies independent surveys1

Countries1

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

Where its DNA was found

0 of 6 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 median24.7 °C 24.7–25.1

Seasonal swing summer↔winter18.8 °C

Max temp (day)27.6 °C 27.6–28.3

Min temp (night)20.2 °C 20.2–21.0

Precipitation242 mm/mo 234–242

Air humidity67.4 % 64.7–67.4

Moisture balance84.5 mm/mo 84.5–108

Vapour deficit1,017 Pa 1,017–1,125

Wind speed3.70 m/s 2.10–3.70

Cloud cover50.5 % 43.6–50.5

CHELSA 1981–2010, ~9 km grid, at location & month of 3 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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