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Thalictrum javanicum; photograph Jacy Chen, CC BY, iNaturalist via GBIF CC BYJacy Chen, CC BY, iNaturalist via GBIF

Thalictrum javanicum Blume

Ranunculaceae · China South-Central, China North-Central +12

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Thalictrum javanicum, photograph Jacy Chen, CC BY, iNaturalist via GBIFThalictrum javanicum, photograph Jacy Chen, CC BY, iNaturalist via GBIFThalictrum javanicum, photograph Cheng-Te Hsu, CC BY, iNaturalist via GBIFThalictrum javanicum, photograph Cheng-Te Hsu, CC BY, iNaturalist via GBIFThalictrum javanicum, photograph Cheng-Te Hsu, CC BY, iNaturalist via GBIFThalictrum javanicum, photograph Cheng-Te Hsu, CC BY, iNaturalist via GBIF 12 photographs ›
Habitat figures
Coldest month, mean nightly low
0.4°C
Jan at the habitat, not a floor; extremes not used (the weather cell's ground is too far off) CHELSA
Warmest month, mean daily high
18°C
Jun, Jul and Aug at the habitat CHELSA
Rain a year (median across the range)
3,161mm
12 months of 25 mm or more in the median year CHELSA
Open-sky light
19–34DLI
Lowest to highest month (DLI) CHELSA
The year in your months, northern hemisphere
  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 summers: the rain comes May to October, read as a summer growing season. rain rule, CHELSA
Northern hemisphere unless you set your site. The chart is in the habitat's months.

About the genus · Thalictrum

Thalictrum is a genus of 120–200 species of herbaceous perennial flowering plants in the buttercup family, Ranunculaceae, native mostly to temperate regions. Meadow-rue is a common name for plants in this genus.

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

Cultivation

Seasons

The rain rule reads a summer growing season: 70% of the median year's rain (2,472 mm of 3,316 mm) falls in May to October, warmer than the year (wet-season mean 14.2 °C against a yearly mean of 11.0 °C). Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: November to April.

Rain

3,316 mm in the median year at the habitat, 2,472 mm of it May to October. Wettest month August at 499 mm, driest month December at 81 mm. Across the grid cells of the range the year's total runs 1,567 mm to 4,076 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 3,161 mm, is the year's rain at the top of the page; the 3,316 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: 19 to 34 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 16, the highest 90th-percentile month 43).

Warmth and air
Temperature

Monthly means: the coldest month's mean nightly low 0.4 °C in January (across the grid cells of the range -1.8 °C to 6.2 °C), the warmest month's mean daily high 18.1 °C in July (median year across the grid cells of the range, CHELSA). Cold floor: none read. The nearest figure is 0.4 °C, the coldest month's mean nightly low, January, in the median year (CHELSA); a month's mean of its nightly lows is warmer than the nights a floor is read from. The daily extremes were read at a weather cell whose ground is too far above or below the typical spot to correct for, and are not used.

Humidity

Relative humidity at the habitat: 57 to 67% 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. CHELSA monthly means, median year across the grid cells of the range. No cold floor is read without a daily extremes series; the coldest month's mean nightly low named in its sentence is not one. 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 Thalictrum javanicum through the yearWarmest months June, July and August, mean daily high 18 °C; coldest month January, mean nightly low 0.4 °C; 3,316 mm of rain in the median year (the twelve monthly medians added). Medians across the range, from CHELSA. Habitat months, northern hemisphere.-5°0°5°10°15°20°25°30°frost°C · day and nightcold quarter0200400600800mm rainDLI 19–34RH 57–67%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 21 habitat cells, CHELSA cold quarter: the three months around the coldest month's mean nightly low DLI, mol/m²/dayRH %each on its own scale
Figures by month
JanFebMarAprMayJunJulAugSepOctNovDec
Day °C8 / 5–189 / 6–2012 / 9–2215 / 12–2317 / 13–2418 / 14–2118 / 15–2118 / 15–2117 / 14–2216 / 12–2113 / 10–179 / 6–17
Night °C0 / -2–62 / -1–75 / 2–98 / 4–1110 / 6–1311 / 8–1511 / 8–1511 / 8–1510 / 7–149 / 6–115 / 3–92 / -1–7
Rain mm88 / 22–117169 / 19–195180 / 52–197207 / 91–278355 / 137–506428 / 167–612468 / 227–625499 / 165–693465 / 155–597257 / 131–354119 / 56–17981 / 50–112
DLI20 / 16–3622 / 18–4027 / 24–4330 / 28–3930 / 29–3630 / 28–3234 / 25–3631 / 26–3228 / 27–3026 / 23–2922 / 19–2919 / 16–32
RH %57 / 53–6460 / 53–6660 / 52–6562 / 57–6564 / 61–6765 / 62–6865 / 61–7166 / 63–7067 / 62–6864 / 58–6861 / 55–6557 / 53–63

The daily extremes were not used: the correction for elevation, +1179 m, is beyond the 1,000 m either way that a lapse rate is applied over, so the weather cell's ground is other terrain than the typical spot's. So no cold floor is read for this species, and the coldest month's mean nightly low is not taken as one. What that cell gave, so corrected, over 44 years: absolute minimum -11.7 °C, 1st-percentile night -6.1 °C.

How this section is made
Each figure is the median across the 21 grid cells holding the 28 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 1319:6025 (24.025, 121.275). 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 21 distinct grid cells holding 28 of the 28 in-range records; extremes and elevation at the typical cell 1319:6025 (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 24.00_121.250, lapse-corrected +1179 m at 6.5 °C/km. Elevation: ETOPO 2022, 2502 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.
NativeChina South-Central, China North-Central, China Southeast, Tibet, Taiwan, Assam, East Himalaya, India, Nepal, Sri Lanka, West Himalaya, Myanmar, Jawa, Lesser Sunda Is. · 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 marker28.329, 103.132 · in the densest population, 129 records (49% of those in range)
Kew's description“perennial” · “temperate” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 264 georeferenced records inside the native range; the climate across the range on the 28 of them placed to within 10 km; the map shows only the 144 openly licensed ones, which alone would put the marker 20 km away. 1 record outside the WCVP native range not used. 236 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.
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 264 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Thalictrum javanicum, photograph 1did not loadThalictrum javanicum, photograph 2did not loadThalictrum javanicum, photograph 3did not loadThalictrum javanicum, photograph 4did not loadThalictrum javanicum, photograph 5did not loadThalictrum javanicum, photograph 6did not load

Photographs: Jacy Chen, CC BY, iNaturalist via GBIF (2); Cheng-Te Hsu, CC BY, iNaturalist via GBIF (4).

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

Rhododendron rubropilosum Rhododendron rubropilosum Ericaceae Photo: CC BY, Cheng-Te HsuJuniperus formosana Juniperus formosana Formosan juniper Photo: CC BY, Zheng-An WangGaultheria borneensis Gaultheria borneensis Ericaceae Photo: CC BY-SA, jengruRosa transmorrisonensis Rosa transmorrisonensis Glandular Rose Photo: CC BY, Rick ChouBerberis kawakamii Berberis kawakamii Berberidaceae Photo: CC BY, 鄭雪雲Ilex bioritsensis Ilex bioritsensis Aquifoliaceae Photo: CC BY, crothfels

Other Thalictrum 46 in the reference

Thalictrum actaeifolium Thalictrum actaeifolium Twinkling-star Photo: CC BY, Kim, Hyun-taeThalictrum alpinum Thalictrum alpinum Alpine meadow-rue Photo: CC BY, Ingvild RiskaThalictrum aquilegiifolium Thalictrum aquilegiifolium French meadow-rue Photo: CC BY, Dmitriy BochkovThalictrum baicalense Thalictrum baicalense Baical meadow-rue Photo: CC0, Фёдор Thalictrum calabricum Ranunculaceae Thalictrum chelidonii Thalictrum chelidonii Ranunculaceae Photo: CC BY-SA, Meneerke bloemThalictrum clavatum Thalictrum clavatum Mountain meadow-rue Photo: CC0, author not statedThalictrum cooleyi Thalictrum cooleyi Cooley's meadow-rue Photo: CC0, author not statedThalictrum coreanum Thalictrum coreanum Korean meadow-rue Photo: CC BY-SA, KENPEIThalictrum coriaceum Thalictrum coriaceum Maid of the mist Photo: CC BY, Michael J. PapayThalictrum cultratum Thalictrum cultratum Ranunculaceae Photo: CC BY, Siddarth MachadoThalictrum dasycarpum Thalictrum dasycarpum Purple meadow-rue Photo: CC0, author not stated all 47 ›

Names & registers

Also known as Thalictrum argyi; Thalictrum glyphocarpum; Thalictrum javanicum var. javanicum. (GBIF Backbone)

Kew accepts as species of their own Thalictrum sessile: older names in GBIF's record of this species that Kew's World Checklist accepts as other species. (WCVP, RBG Kew, file of 2026-06-04)

GBIFPOWOIPNIWFOWikidata

The record

Family
Ranunculaceae
Described by
Blume
Native to
China South-Central, China North-Central, China Southeast +11
Wild records
264 in range · 144 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 answeredas of 2026-10-21GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21
Habitat climate climate answeredasked 2026-10-22
Daily extremes (NASA POWER) climate.extremes answeredasked 2026-10-22NASA POWER (MERRA-2) daily 1981–2024, cell 24.00_121.250, lapse-corrected +1179 m at 6.5 °C/km; read, and set aside: the correction for elevation, +1179 m, is beyond the 1,000 m either way that a lapse rate is applied over, so the weather cell's ground is other terrain than the typical spot's, so no cold floor is shown
Wikidata wikidata answeredasked 2026-10-22
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 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 31 datasets via GBIF.org; each carries its own licence.

Cultifolio

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