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Phyllanthus assamicus; photograph Vinayaraj, CC BY-SA 3.0, via Wikimedia Commons CC BY-SAVinayaraj, CC BY-SA 3.0, via Wikimedia Commons

Phyllanthus assamicus Müll.Arg.

Phyllanthaceae · China South-Central, Hainan +11

English names not checked: Wikidata's common names were not read for this page.

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Phyllanthus assamicus, photograph Vinayaraj, CC BY-SA 3.0, via Wikimedia CommonsPhyllanthus assamicus, photograph Vinayaraj, CC BY-SA 3.0, via Wikimedia CommonsPhyllanthus assamicus, photograph Vinayaraj, CC BY-SA 3.0, via Wikimedia CommonsPhyllanthus assamicus, photograph Vinayaraj, CC BY-SA 3.0, via Wikimedia CommonsPhyllanthus assamicus, photograph Vinayaraj, CC BY-SA 3.0, via Wikimedia CommonsPhyllanthus assamicus, photograph Vinayaraj, CC BY-SA 3.0, via Wikimedia Commons 12 photographs ›
Habitat figures
Cold floor (1 night in 100)
11.0°C
Record low 8.8 °C in 44 years, at a typical spot in the range NASA POWER
Warmest month, mean daily high
30°C
Mar at the habitat CHELSA
Rain a year (median across the range)
3,238mm
12 months of 25 mm or more in the median year CHELSA
Open-sky light
22–41DLI
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
A sharp rainy season, May to October (the habitat's months, not shifted), in a year of even temperature. rain rule, CHELSA
Not shifted: the shift rule does not apply to this habitat. The chart is in the habitat's months.

About the genus · Phyllanthus

Phyllanthus is the largest genus in the plant family Phyllanthaceae. Estimates of the number of species in this genus vary widely, from 750 to 1200. Phyllanthus has a remarkable diversity of growth forms including annual and perennial herbs, shrubs, climbers, floating aquatics, and pachycaulous succulents. More on Wikipedia ›

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

Cultivation

Seasons

The rain rule reads a sharp season: 70% of the median year's rain (2,542 mm of 3,234 mm) falls in May to October. The temperature curve is flat, 2.9 °C between the warmest and coldest month, so the growing-season rule does not infer a growing season from it. Months are the habitat's, northern hemisphere. The temperature curve moves under 4 °C between the warmest and coldest month, where the shift rule does not apply, so they are not shifted for a collection elsewhere.

Rain

3,234 mm in the median year at the habitat, 2,542 mm of it May to October. Wettest month July at 615 mm, driest month January at 27 mm. Across the grid cells of the range the year's total runs 2,062 mm to 4,193 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 3,238 mm, is the year's rain at the top of the page; the 3,234 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: 22 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 21, the highest 90th-percentile month 42).

Warmth and air
Temperature

Coldest: the 1st-percentile night over 44 years at a typical spot in the range is 11.0 °C, the absolute minimum 8.8 °C, no frost in 44 years (NASA POWER daily minima). Warmest: the 99th-percentile day is 35.6 °C. Monthly means: the coldest month's mean nightly low 16.0 °C in January (across the grid cells of the range 12.5 °C to 17.2 °C), the warmest month's mean daily high 29.9 °C in March (median year across the grid cells of the range, CHELSA). Cold floor: 11.0 °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: 55 to 79% 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 +446 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 Phyllanthus assamicus through the yearWarmest month March, mean daily high 30 °C; coldest month January, mean nightly low 16.0 °C; 3,234 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°35.6° 99th-percentile day, NASA POWER8.8° lowest night in 44 years, NASA POWER°C · day and nightcold quarter02004006008001000mm rainDLI 22–41RH 55–79%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 10 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 °C27 / 24–2829 / 26–3030 / 28–3129 / 27–3128 / 26–2925 / 23–2924 / 23–2824 / 23–2825 / 24–2725 / 24–2625 / 24–2625 / 23–26
Night °C16 / 13–1717 / 15–1818 / 17–2020 / 19–2121 / 19–2220 / 18–2219 / 18–2219 / 18–2219 / 18–2119 / 18–2018 / 16–1917 / 13–18
Rain mm27 / 15–3329 / 20–40108 / 41–142217 / 122–297290 / 219–391512 / 239–687615 / 283–805426 / 334–560296 / 234–371403 / 308–515245 / 94–29666 / 28–78
DLI36 / 25–3740 / 31–4141 / 36–4236 / 35–3731 / 29–3223 / 22–3122 / 21–3224 / 23–3027 / 26–2927 / 26–2828 / 25–2932 / 23–33
RH %57 / 56–6055 / 55–5758 / 56–6167 / 64–6972 / 69–7578 / 69–8179 / 68–8278 / 69–8175 / 68–7771 / 67–7367 / 65–6761 / 60–62
How this section is made
Each figure is the median across the 10 grid cells holding the 18 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 1593:5137 (10.325, 76.875). Over 44 years there: absolute minimum 8.8 °C, 1st-percentile night 11.0 °C, 99th-percentile day 35.6 °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 10 distinct grid cells holding 18 of the 18 in-range records; extremes and elevation at the typical cell 1593:5137 (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 10.50_76.875, lapse-corrected +446 m at 6.5 °C/km. Elevation: ETOPO 2022, 986 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.

This species has no GBIF key of its own. Its records are GBIF's under the keys of the names Kew's World Checklist holds as this plant: 3080450 (Diasperus assamicus (Müll.Arg.) Kuntze, 0 records), 3080456 (Glochidion assamicum (Müll.Arg.) Hook.f., 247 records), 5383145 (Phyllanthus assamicus Müll.Arg., 26 records). No name was matched to GBIF; the keys are read from Kew's synonymy. How.

NativeChina South-Central, Hainan, China Southeast, Taiwan, Assam, Bangladesh, East Himalaya, India, Nepal, West Himalaya, Myanmar, Thailand, Vietnam · 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 marker22.011, 100.8 · in the densest population, 61 records (54% of those in range)
Kew's description“shrub or tree” · “wet tropical” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 114 georeferenced records inside the native range; the climate across the range on the 18 of them placed to within 10 km; the map shows only the 77 openly licensed ones, which alone would put the marker 403 km away. 96 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 3080450 (Diasperus assamicus (Müll.Arg.) Kuntze): Kew's file holds it as Diasperus assamicus (Müll.Arg.) Kuntze (synonym under Phyllanthus assamicus Müll.Arg.); 0 records, from GBIF's search API on the day of the build.Records also from GBIF's key 3080456 (Glochidion assamicum (Müll.Arg.) Hook.f.): Kew's file holds it as Glochidion assamicum (Müll.Arg.) Hook.f. (synonym under Phyllanthus assamicus Müll.Arg.); 247 records, from GBIF's download.Records also from GBIF's key 5383145 (Phyllanthus assamicus Müll.Arg.): Kew's file holds it as Phyllanthus assamicus Müll.Arg. (accepted); 26 records, from GBIF's download.
How this section is made
The map marker: the openly licensed record nearest the middle of the densest 1° population inside the densest 4° block of the 114 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Phyllanthus assamicus, photograph 1did not loadPhyllanthus assamicus, photograph 2did not loadPhyllanthus assamicus, photograph 3did not loadPhyllanthus assamicus, photograph 4did not loadPhyllanthus assamicus, photograph 5did not loadPhyllanthus assamicus, photograph 6did not load

Photographs: Vinayaraj, CC BY-SA 3.0, via Wikimedia Commons (6).

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

Erythropalum scandens Erythropalum scandens Erythropalaceae Photo: CC0, Aruna GamuzCurcuma amada Curcuma amada Mango ginger Photo: Public domain, vicharamPalaquium ellipticum Palaquium ellipticum Sapotaceae Photo: CC BY, madhavan a.pSyzygium rubicundum Syzygium rubicundum Myrtaceae Photo: CC BY, Pranav Chandra BosePrunus ceylanica Prunus ceylanica Rosaceae Photo: CC BY-SA, Dinesh Valke Discospermum sphaerocarpum Rubiaceae

Other Phyllanthus 53 in the reference

Phyllanthus abnormis Phyllanthus abnormis Drummond's leaf-flower Photo: CC0, author not statedPhyllanthus acidus Phyllanthus acidus Otaheite gooseberry Photo: CC BY, Annika LindqvistPhyllanthus albiflorus Phyllanthus albiflorus Phyllanthaceae Photo: CC BY, Ethel AardvarkPhyllanthus amarus Phyllanthus amarus Carry me seed Photo: CC BY, Raja Sekhar ChimiralaPhyllanthus anamalayanus Phyllanthus anamalayanus Phyllanthaceae Photo: CC BY, Srinivasan KasinathanPhyllanthus angustifolius Phyllanthus angustifolius Foliage flower Photo: CC0, author not statedPhyllanthus arbuscula Phyllanthus arbuscula Phyllanthaceae Photo: CC BY-SA, User:BotBlnPhyllanthus buxifolius Phyllanthus buxifolius Phyllanthaceae Photo: CC0, author not statedPhyllanthus calycinus Phyllanthus calycinus Phyllanthaceae Photo: CC BY, Millie BradyPhyllanthus caroliniensis Phyllanthus caroliniensis Carolina leaf-flower Photo: CC BY, Christopher EvansPhyllanthus cernuus Phyllanthus cernuus Phyllanthaceae Photo: CC BY, Thomas MesaglioPhyllanthus chacoensis Phyllanthus chacoensis Phyllanthaceae Photo: CC BY, Tomás Tamagno all 54 ›

Names & registers

Also known as Bradleia wightiana; Diasperus assamicus; Diasperus malabaricus; Glochidion diversifolium var. wightianum; Glochidion diversifolium and 14 more. (WCVP, RBG Kew)

IPNIPOWOWikidataWFO

The record

Family
Phyllanthaceae
Described by
Müll.Arg.
Native to
China South-Central, Hainan, China Southeast +10
Wild records
114 in range · 77 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
Kew's names (WCVP) kew.names answeredas of 2026-06-04Kew's entry Phyllanthus assamicus Müll.Arg. (plant_name_id 153394), read from Kew's names file
GBIF species record gbif.species not askedGBIF's backbone holds no one accepted species of this name, and a name it holds only as another species' synonym is not taken for this one, so GBIF's records were not asked
GBIF synonyms gbif.synonyms not askedGBIF's backbone holds no one accepted species of this name, and a name it holds only as another species' synonym is not taken for this one, so GBIF's records were not asked
GBIF common names gbif.vernacular not askedGBIF's backbone holds no one accepted species of this name, and a name it holds only as another species' synonym is not taken for this one, so GBIF's records were not asked
WCVP native range wcvp.distribution answeredas of 2026-06-04
GBIF occurrence records gbif.occurrences answeredasked 2026-10-22this species has no GBIF key of its own; its records are read under GBIF's keys for the names Kew's file holds as this plant, never by a name matched; GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21; 0 records of GBIF's key 3080450, Diasperus assamicus (Müll.Arg.) Kuntze (Kew's file holds it as Diasperus assamicus (Müll.Arg.) Kuntze (synonym under Phyllanthus assamicus Müll.Arg.)): GBIF occurrence search API; 247 records of GBIF's key 3080456, Glochidion assamicum (Müll.Arg.) Hook.f. (Kew's file holds it as Glochidion assamicum (Müll.Arg.) Hook.f. (synonym under Phyllanthus assamicus Müll.Arg.)): the GBIF download; 26 records of GBIF's key 5383145, Phyllanthus assamicus Müll.Arg. (Kew's file holds it as Phyllanthus assamicus Müll.Arg. (accepted)): the GBIF download
Habitat climate climate answeredasked 2026-10-22
Daily extremes (NASA POWER) climate.extremes answeredasked 2026-10-22NASA POWER (MERRA-2) daily 1981–2024, cell 10.50_76.875, lapse-corrected +446 m at 6.5 °C/km
Wikidata wikidata answeredasked 2026-10-22found by Kew's IPNI identifier 353536-1, POWO 353536-1
Wikipedia wikipedia nothing to reportasked 2026-10-22
iNaturalist taxon inat.taxon not asked
iNaturalist photographs, wild inat.photos.wild not asked
iNaturalist photographs, cultivated inat.photos.cultivated not asked
GBIF media gbif.media not askedGBIF's backbone holds no one accepted species of this name, and a name it holds only as another species' synonym is not taken for this one, so GBIF's records were not asked
Wikimedia Commons commons 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 15 datasets via GBIF.org; each carries its own licence.

Cultifolio

Opening your plants…