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Syzygium guineense; photograph (c) Tony Rebelo, some rights reserved (CC BY-SA) CC BY-SA(c) Tony Rebelo, some rights reserved (CC BY-SA) · observed growing wild · 2026-04-12

Syzygium guineense (Willd.) DC.

Water-pear; White umdoni; Bushveld Waterberry; Waterberry

Myrtaceae · Benin, Burkina +39

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Syzygium guineense, photograph author not stated, no rights reservedSyzygium guineense, photograph author not stated, no rights reservedSyzygium guineense, photograph author not stated, no rights reservedSyzygium guineense, photograph author not stated, no rights reservedSyzygium guineense, photograph author not stated, no rights reservedSyzygium guineense, photograph author not stated, no rights reserved 81 photographs ›
Habitat figures
Cold floor (1 night in 100)
13.8°C
Record low 10.8 °C in 44 years, at a typical spot in the range NASA POWER
Warmest month, mean daily high
36°C
Mar at the habitat CHELSA
Rain a year (median across the range)
1,197mm
8 months of 25 mm or more in the median year CHELSA
Open-sky light
27–41DLI
Lowest to highest month (DLI) CHELSA
The year in the habitat's months, not shifted
  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec
Wet winters: the rain comes May to September (the habitat's months, not shifted), read as a winter growing season. rain rule, CHELSA
Not shifted: the shift rule does not apply to this habitat. The chart is in the habitat's months.

Summary

Syzygium guineense (Bambara: Kokisa) is an evergreen leafy forest tree of the family Myrtaceae, found in many parts of Africa both wild and domesticated. Both its fruits and leaves are edible; the pulp and the fruit skin are sucked and the seed discarded. It is sometimes called "waterberry", but this may also refer to other species of Syzygium.

Quoted from Wikipedia, "Syzygium guineense", CC BY-SA 4.0.

About the genus · Syzygium

Syzygium is a genus of flowering plants that belongs to the myrtle family, Myrtaceae. The genus comprises about 1200 species, and has a native range that extends from Africa and Madagascar through southern Asia east through the Pacific. Its highest levels of diversity occur from Malaysia to northeastern Australia, where many species are very poorly known and many more have not been described taxonomically. More on Wikipedia ›

Quoted from Wikipedia, "Syzygium", CC BY-SA 4.0.

Cultivation

Seasons

The rain rule reads a winter growing season: 70% of the median year's rain (953 mm of 1,218 mm) falls in May to September, cooler than the year (wet-season mean 25.3 °C against a yearly mean of 26.3 °C). Months are the habitat's, northern hemisphere. The habitat lies within 10° of the equator, where the shift rule does not apply, so they are not shifted for a collection elsewhere.

Rain

1,218 mm in the median year at the habitat, 953 mm of it May to September. Wettest month August at 251 mm, driest month January at 2 mm; 2 months under 5 mm. Across the grid cells of the range the year's total runs 953 mm to 2,056 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 1,197 mm, is the year's rain at the top of the page; the 1,218 mm here is the median year's, the twelve monthly medians added, which the rain rule reads. Habitat calendar, northern hemisphere; median year across the grid cells of the range, CHELSA.

Light

Open sky over the habitat: 27 to 41 mol/m²/day across the year (daily light integral, median year across the grid cells of the range, CHELSA; the lowest 10th-percentile month across the cells is 24, the highest 90th-percentile month 43).

Warmth and air
Temperature

Coldest: the 1st-percentile night over 44 years at a typical spot in the range is 13.8 °C, the absolute minimum 10.8 °C, no frost in 44 years (NASA POWER daily minima). Warmest: the 99th-percentile day is 39.9 °C. Monthly means: the coldest month's mean nightly low 18.9 °C in January (across the grid cells of the range 14.3 °C to 22.1 °C), the warmest month's mean daily high 35.7 °C in March (median year across the grid cells of the range, CHELSA). Cold floor: 13.8 °C, which is the 1st-percentile night over 44 years at a typical spot in the range (NASA POWER).

Humidity

Relative humidity at the habitat: 40 to 68% across the year (monthly means, median year across the grid cells of the range, CHELSA). A figure about the air, saying nothing about how the plant takes water.

How this section is made

Each card states this species' habitat figures with their sources, and what two fixed rules read from them; nothing here says what the plant does, wants or tolerates. The rules · the terms.

Seasons. Read from the median year of CHELSA monthly rainfall and mean temperature across the grid cells of the range: the rain rule takes the smallest set of months carrying 70% of the rain and calls it winter when its mean is more than half a degree below the year's, summer when more than that above, and neither in between; the temperature rule, used only under 120 mm, names the cooler six months when they are at least a degree cooler than the other six. Months are shifted for the other hemisphere only where the temperature curve moves 4 °C or more and the habitat lies 10° or more from the equator. A reading of the curves, not an observation of the plant.

Rain. CHELSA monthly precipitation, median year across the grid cells of the range. The rain that falls where the species is recorded; nothing about how the plant takes water.

Light. CHELSA shortwave radiation at each envelope cell, a daily-mean flux taken to a daily total and converted at 2.07 mol of PAR per MJ. The sky over the habitat, measured; what reaches a plant under a rock, a shrub or a shade cloth is not.

Temperature. NASA POWER daily minima and maxima over 44 years at a typical spot in the range, lapse-corrected -30 m to its elevation; CHELSA monthly means, median year across the grid cells of the range. The cold floor is the 1st-percentile night named in its sentence. Not a measured survival limit for any plant in a pot.

Humidity. CHELSA relative humidity, median year across the grid cells of the range.

Climate across the habitat

Habitat months, northern hemisphere

Habitat climate of Syzygium guineense through the yearWarmest month March, mean daily high 36 °C; coldest month January, mean nightly low 18.9 °C; 1,218 mm of rain in the median year (the twelve monthly medians added). Medians across the range, from CHELSA; the extremes at the edge from NASA POWER. Habitat months, northern hemisphere.5°10°15°20°25°30°35°40°45°39.9° 99th-percentile day, NASA POWER10.8° lowest night in 44 years, NASA POWER°C · day and nightcold quarter0100200300400mm rainDLI 27–41RH 40–68%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 268 habitat cells, CHELSA cold quarter: the three months around the coldest month's mean nightly low extremes over 44 years at a typical spot in the range, from NASA POWER, marked at the edge, in no month DLI, mol/m²/dayRH %each on its own scale
Figures by month
JanFebMarAprMayJunJulAugSepOctNovDec
Day °C33 / 26–3535 / 27–3736 / 27–3934 / 25–3832 / 25–3630 / 24–3328 / 24–3028 / 24–2929 / 25–3030 / 25–3232 / 24–3533 / 25–34
Night °C19 / 14–2221 / 15–2323 / 16–2524 / 16–2623 / 16–2622 / 15–2422 / 15–2321 / 16–2321 / 15–2322 / 15–2320 / 15–2319 / 14–22
Rain mm2 / 0–406 / 1–5339 / 7–12295 / 36–199133 / 82–246164 / 95–282201 / 103–306251 / 77–340204 / 134–304108 / 58–21912 / 3–1383 / 0–68
DLI38 / 34–4141 / 36–4341 / 35–4338 / 33–4235 / 30–4131 / 27–3828 / 25–3327 / 24–3230 / 27–3534 / 29–3837 / 31–3937 / 32–39
RH %40 / 34–6041 / 33–6049 / 38–6459 / 47–6663 / 55–6865 / 58–6967 / 62–7068 / 63–7167 / 62–7063 / 58–6852 / 43–6643 / 37–64

Records on both sides of the equator: the 60 cells at least 10° south of it have seasons six months apart and are left out, not combined into a year no place has. These figures are across the 268 cells that remain: the 80 at least 10° north and the 188 within 10° of the equator, which stay in either way.

How this section is made
Each figure is the median across the 268 grid cells holding the 335 in-range records, with the 10th–90th percentile span across those cells after the slash where it differs. A dash is a month one or more of those cells has no figure for in the grid (a variable CHELSA does not carry there), so no median is taken rather than one over fewer cells. Extremes and elevation were read at a typical spot in the range, cell 1609:3642 (9.525, 2.125). Over 44 years there: absolute minimum 10.8 °C, 1st-percentile night 13.8 °C, 99th-percentile day 39.9 °C. Normals: CHELSA V2.1 1981–2010 climatology, 0.05° cells (each the mean of ~36 1 km pixels). Across the range: median and 10th–90th percentile of each month across the 268 distinct grid cells holding 335 of the 420 in-range records on the northern side of the equator (80 cells poleward of 10° north, 60 poleward of 10° south: the two sides' seasons are not combined, and cells within 10° of the equator stay in); extremes and elevation at the typical cell 1609:3642 (its coldest month's mean nightly low nearest the median across cells); its position is the cell centre. Extremes: NASA POWER (MERRA-2) daily 1981–2024, cell 9.50_1.875, lapse-corrected -30 m at 6.5 °C/km. Elevation: ETOPO 2022, 347 m (cell mean).

Natural habitat

Native range as published by WCVP; the marker is where the records are densest and decides nothing: the climate was read across the cells of the in-range records placed well enough to read one, not at the marker.
Openly licensed records inside the range, framed on where they fall.
NativeBenin, Burkina, The Gambia, Ghana, Guinea-Bissau, Guinea, Ivory Coast, Liberia, Mali, Nigeria, Senegal, Sierra Leone, Togo, Burundi, Cabinda, Central African Republic, Cameroon, Congo, Gabon, Rwanda, Zaïre, Chad, Eritrea, Ethiopia, Somalia, Sudan, Kenya, Tanzania, Uganda, Angola, Malawi, Mozambique, Zambia, Zimbabwe, Botswana, Namibia, KwaZulu-Natal, Swaziland, Northern Provinces, Saudi Arabia, Yemen · regions are the level-3 units of the World Geographical Scheme for Recording Plant Distributions, as Kew's World Checklist records ranges, some under historical names such as Yugoslavia or Czechoslovakia (how).
Map marker9.622, 1.64 · in the densest population, 158 records (13% of those in range)
Kew's description“tree” · “seasonally dry tropical” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 1175 georeferenced records inside the native range; the climate across the range on the 335 of them in the land cells it reads, of 420 placed to within 10 km; the map shows only the 1066 openly licensed ones, which alone would put the marker 25 km away. 41 records outside the WCVP native range not used. 755 in-range records are placed to worse than 10 km, or with no stated accuracy (admitted only as a person's observation to three decimals), and stay on the map but off the climate.
Other GBIF keysRecords also from GBIF's key 10992393 (Syzygium guineense (Willd.) DC.f): Kew's file holds it as Syzygium guineense (Willd.) DC. (accepted); 0 records, from GBIF's search API on the day of the build.
How this section is made
The map marker: the openly licensed record nearest the middle of the densest 1° population of the 1175 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Syzygium guineense, photograph 1did not loadSyzygium guineense, photograph 2did not loadSyzygium guineense, photograph 3did not loadSyzygium guineense, photograph 4did not loadSyzygium guineense, photograph 5did not loadSyzygium guineense, photograph 6did not load

Photographs: author not stated, no rights reserved · CC0 (6).

Similar habitat climate The 6 nearest by mean daily high, mean nightly low and rain, month by month. How.

Pentadesma butyracea Pentadesma butyracea Butter tree Photo: CC BY, Sunday Berlioz KAKPOCalyptrochilum christyanum Calyptrochilum christyanum Orchidaceae Photo: CC BY-SA, Tony Rebelo Raphionacme vignei Apocynaceae Aloe buettneri Aloe buettneri West African aloe Photo: CC BY-SA, Saint Fédriche NDZAIErythrophleum suaveolens Erythrophleum suaveolens Ordeal Tree Photo: CC BY, fmunozDyschoriste nagchana Dyschoriste nagchana Acanthaceae Photo: CC BY-SA, Greg Tasney

Other Syzygium 85 in the reference

Syzygium acre Syzygium acre Myrtaceae Photo: CC BY-SA, didierSyzygium acuminatissimum Syzygium acuminatissimum Myrtaceae Photo: CC BY, Cheng-Te HsuSyzygium alatoramulum Syzygium alatoramulum Tinkling stainash Photo: CC BY-SA, Steve FitzgeraldSyzygium alliiligneum Syzygium alliiligneum Mission Beach satinash Photo: CC BY-SA, Evert MatermanSyzygium angophoroides Syzygium angophoroides Swamp Satinash Photo: CC BY, Roland MuenchSyzygium anisatum Syzygium anisatum Anise myrtle Photo: CC BY-SA, Lachlan CopelandSyzygium antisepticum Syzygium antisepticum Myrtaceae Photo: CC BY, luluchouetteSyzygium apodophyllum Syzygium apodophyllum Rex Satinash Photo: CC BY-SA, Evert MatermanSyzygium aqueum Syzygium aqueum Watery rose apple Photo: CC BY, T R Shankar Raman Syzygium armstrongii Small White Bush Apple Syzygium aromaticum Syzygium aromaticum Clove Photo: CC BY, Eric KnightSyzygium australe Syzygium australe Australian brush-cherry Photo: CC BY, Dave Richardson all 86 ›

Names & registers

Also known as Calyptranthes guineense; Memecylon lopezianum; Syzygium fleuryi; Syzygium guineense var. guineense. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidataWikipediaiNaturalist

The record

Family
Myrtaceae
Described by
(Willd.) DC.
Native to
Benin, Burkina, The Gambia +38
Wild records
1175 in range · 1066 open

Every figure here is derived from public data by a stated rule and names its source; nothing about this species is written for its page by a person or by AI, apart from the marked, credited quotations. How →

Where this page came from built 2026-10-22
GBIF species record gbif.species answeredasked 2026-10-22
GBIF synonyms gbif.synonyms answeredasked 2026-10-22
GBIF common names gbif.vernacular answeredasked 2026-10-22names fetched 2026-10-22
WCVP native range wcvp.distribution answeredas of 2026-06-04
GBIF occurrence records gbif.occurrences answeredasked 2026-10-22GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21; 0 records of GBIF's key 10992393, Syzygium guineense (Willd.) DC.f (Kew's file holds it as Syzygium guineense (Willd.) DC. (accepted)): GBIF occurrence search API; 13 records within 1 km of a botanic garden, herbarium or zoo left out (10 at a botanic garden or arboretum, 1 at a herbarium, 2 at a zoo; Wikidata's list)
Habitat climate climate answeredasked 2026-10-22
Daily extremes (NASA POWER) climate.extremes answeredasked 2026-10-22NASA POWER (MERRA-2) daily 1981–2024, cell 9.50_1.875, lapse-corrected -30 m at 6.5 °C/km
Wikidata wikidata answeredasked 2026-10-22
Wikipedia wikipedia answeredasked 2026-10-22
iNaturalist photographs, wild inat.photos.wild answeredasked 2026-10-22from iNaturalist's open data of 2026-09-27: research-grade observations with an open-licence photograph, the 24 whose photographs iNaturalist received last (the open data holds no votes); filled 2026-10-22
iNaturalist photographs, cultivated inat.photos.cultivated not asked
GBIF media gbif.media answeredasked 2026-10-22
OpenAlex papers openalex not askednot yet asked for this reference; a later fill takes the papers from OpenAlex's snapshot

Every source is recorded as having answered, reported nothing, refused, failed, not been asked, or answered twice where one answer is taken (“not taken: two items answered”), and, for a source asked when this page was built, when: the figures are as the source held them that day; a source read from a file (Kew's World Checklist, a GBIF download) says "as of" the file's day instead; a row carried from an earlier build of the page names that build instead. Only “nothing to report” is ever shown as an absence. Records came from 109 datasets via GBIF.org; each carries its own licence.

Cultifolio

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