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Cerastium davuricum; photograph (c) Tatiana Strus, some rights reserved (CC BY) CC BY(c) Tatiana Strus, some rights reserved (CC BY) · observed growing wild · 2026-06-11

Cerastium davuricum Fisch. ex Spreng.

Caryophyllaceae · Central European Russia, East European Russia +18

Cited as Kew's World Checklist cites it, Cerastium davuricum Fisch. ex Spreng.: GBIF's backbone key for this page carries the name with another author, Fischer.

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Cerastium davuricum, photograph (c) ivansemenkov, some rights reserved (CC BY)Cerastium davuricum, photograph (c) ivansemenkov, some rights reserved (CC BY)Cerastium davuricum, photograph (c) Виктория Билоус, some rights reserved (CC BY)Cerastium davuricum, photograph (c) Tatiana Strus, some rights reserved (CC BY)Cerastium davuricum, photograph (c) kirinzi, some rights reserved (CC BY)Cerastium davuricum, photograph (c) Полина Полежанкина, some rights reserved (CC BY) 60 photographs ›
Habitat figures
Cold floor (1 night in 100)
-35.1°C
Record low -45.6 °C in 44 years, at a typical spot in the range NASA POWER
Warmest month, mean daily high
22°C
Jul at the habitat CHELSA
Rain a year (median across the range)
780mm
12 months of 25 mm or more in the median year CHELSA
Open-sky light
5–39DLI
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 April 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 · Cerastium

Cerastium is a genus of annual, winter annual, or perennial flowering plants belonging to the family Caryophyllaceae. They are commonly called mouse-ears or mouse-ear chickweeds. There are 214 accepted species, found nearly worldwide but with the greatest concentration in the northern temperate regions. More on Wikipedia ›

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

Cultivation

Seasons

The rain rule reads a summer growing season: 70% of the median year's rain (603 mm of 792 mm) falls in April to October, warmer than the year (wet-season mean 10.1 °C against a yearly mean of 1.5 °C). Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: October to April.

Rain

792 mm in the median year at the habitat, 603 mm of it April to October. Wettest month July at 126 mm, driest month February at 27 mm. Across the grid cells of the range the year's total runs 532 mm to 1,639 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 780 mm, is the year's rain at the top of the page; the 792 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: 5 to 39 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 3, the highest 90th-percentile month 41).

Warmth and air
Temperature

Coldest: the 1st-percentile night over 44 years at a typical spot in the range is -35.1 °C, the absolute minimum -45.6 °C, 10,176 frost nights in 44 years, 231.3 a year (NASA POWER daily minima). Warmest: the 99th-percentile day is 25.3 °C. Monthly means: the coldest month's mean nightly low -18.5 °C in January (across the grid cells of the range -23.4 °C to -13.2 °C), the warmest month's mean daily high 21.6 °C in July (median year across the grid cells of the range, CHELSA). Cold floor: -35.1 °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 63% 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 +165 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 Cerastium davuricum through the yearWarmest month July, mean daily high 22 °C; coldest month January, mean nightly low -18.5 °C; 792 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.-60°-40°-20°0°20°40°frost25.3° 99th-percentile day, NASA POWER-45.6° lowest night in 44 years, NASA POWER°C · day and nightcold quarter050100150200250mm rainDLI 5–39RH 55–63%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 450 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 °C-11 / -15–-6-9 / -12–-5-2 / -5–17 / 2–915 / 8–1720 / 13–2122 / 16–2420 / 15–2214 / 10–166 / 2–8-3 / -7–0-9 / -13–-5
Night °C-19 / -23–-13-17 / -22–-13-12 / -15–-9-4 / -8–-23 / -2–59 / 4–1112 / 7–1410 / 6–125 / 1–7-2 / -6–1-11 / -15–-6-16 / -21–-11
Rain mm32 / 14–7327 / 12–7233 / 17–11155 / 30–14680 / 44–185102 / 67–201126 / 78–208100 / 69–17874 / 51–15866 / 34–14354 / 26–12643 / 20–97
DLI8 / 4–1214 / 10–1924 / 19–2831 / 28–3637 / 33–4139 / 36–4136 / 33–3831 / 26–3523 / 17–2814 / 9–198 / 5–135 / 3–10
RH %62 / 57–7360 / 56–6859 / 55–6356 / 53–6055 / 53–6158 / 56–6261 / 58–6361 / 58–6359 / 57–6259 / 57–6361 / 57–6863 / 57–72
How this section is made
Each figure is the median across the 450 grid cells holding the 687 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 621:4769 (58.925, 58.475). Over 44 years there: absolute minimum -45.6 °C, 1st-percentile night -35.1 °C, 99th-percentile day 25.3 °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 450 distinct grid cells holding 687 of the 687 in-range records; extremes and elevation at the typical cell 621:4769 (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 59.00_58.750, lapse-corrected +165 m at 6.5 °C/km. Elevation: ETOPO 2022, 613 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.
NativeCentral European Russia, East European Russia, North European Russia, Altay, Buryatiya, Irkutsk, Krasnoyarsk, Tuva, West Siberia, Kazakhstan, Kirgizistan, Tadzhikistan, North Caucasus, Transcaucasus, Iran, Turkey, Xinjiang, Mongolia, Pakistan, West Himalaya · 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 marker51.513, 84.357 · in the densest population, 328 records (34% of those in range)
Kew's description“perennial or subshrub” · “temperate” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 965 georeferenced records inside the native range; the climate across the range on the 687 of them placed to within 10 km; the map shows only the 448 openly licensed ones, which alone would put the marker 61 km away. 3 records outside the WCVP native range not used. 278 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 3812458 (Cerastium davuricum Fisch. ex Spreng.): Kew's file holds it as Cerastium davuricum Fisch. ex Spreng. (accepted); 395 records, from GBIF's search API on the day of the build.Records also from GBIF's key 3812487 (Cerastium dahuricum Schrank): Kew's file holds it as Cerastium dahuricum Schrank (orthographic under Cerastium davuricum Fisch. ex Spreng.); 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 inside the densest 2° block of the 965 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Cerastium davuricum, photograph 1did not loadCerastium davuricum, photograph 2did not loadCerastium davuricum, photograph 3did not loadCerastium davuricum, photograph 4did not loadCerastium davuricum, photograph 5did not loadCerastium davuricum, photograph 6did not load

Photographs: (c) ivansemenkov, some rights reserved (CC BY) (2); (c) Виктория Билоус, some rights reserved (CC BY); (c) Tatiana Strus, some rights reserved (CC BY); (c) kirinzi, some rights reserved (CC BY); (c) Полина Полежанкина, some rights reserved (CC BY).

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

Alfredia cernua Alfredia cernua Asteraceae Photo: CC BY, Maxim ShashkovLigularia sibirica Ligularia sibirica Asteraceae Photo: CC BY, Urgamal MagsarCerastium pauciflorum Cerastium pauciflorum Hairy mouse-ear chickweed Photo: CC BY, Полина ПолежанкинаErythronium sibiricum Erythronium sibiricum Siberian Fawn Lily Photo: CC BY, Andrew BazdyrevPotentilla chrysantha Potentilla chrysantha Thuringian cinquefoil Photo: CC BY, Maxim Votyakov (maximaximax)Petasites radiatus Petasites radiatus Asteraceae Photo: CC BY, Полина Полежанкина

Other Cerastium 26 in the reference

Cerastium alpinum Cerastium alpinum Alpine mouse-ear Photo: CC BY, Denys VynokurovCerastium arcticum Cerastium arcticum Arctic Mouse-ear Photo: CC BY, Ingvild Riska Cerastium argenteum Caryophyllaceae Cerastium arvense Cerastium arvense Field mouse-ear Photo: CC0, author not statedCerastium banaticum Cerastium banaticum Caryophyllaceae Photo: CC BY-SA, Krzysztof Ziarnek, KenraizCerastium biebersteinii Cerastium biebersteinii Snow-in-summer Photo: CC BY, Sergey CherkasovCerastium brachypetalum Cerastium brachypetalum Grey mouse-ear Photo: CC BY, Eric WeissgerberCerastium candidissimum Cerastium candidissimum Greek Snow-In-Summer Photo: CC BY, Pantazi KaterinaCerastium decalvans Cerastium decalvans Caryophyllaceae Photo: CC0, Mirko UbovićCerastium elongatum Cerastium elongatum Caryophyllaceae Photo: CC BY, Jared ShormaCerastium fontanum Cerastium fontanum Common mouse-ear Photo: CC0, author not statedCerastium gibraltaricum Cerastium gibraltaricum Gibraltar chickweed Photo: CC BY-SA, jlblancopastor all 27 ›

Names & registers

Also known as Dichodon davuricum; Cerastium amplexicaule; Cerastium connatum; Cerastium dahuricum; Cerastium dichotomum and 3 more. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidataiNaturalist

The record

Family
Caryophyllaceae
Described by
Fisch. ex Spreng.
Native to
Central European Russia, East European Russia, North European Russia +17
Wild records
965 in range · 448 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 2026-10-21
GBIF species record gbif.species answeredasked 2026-10-21GBIF's key 8414512 is Cerastium davuricum Fischer; Kew accepts Cerastium davuricum Fisch. ex Spreng., and the name is cited as Kew accepts it; its synonyms and common names are read from GBIF's Cerastium davuricum Fisch. ex Spreng. (3812458), which GBIF files under Dichodon davuricum (Fisch. ex Spreng.) Á.Löve & D.Löve (7944656) too
GBIF synonyms gbif.synonyms answeredasked 2026-10-219 read from GBIF's Cerastium davuricum Fisch. ex Spreng. (3812458), which GBIF files under Dichodon davuricum (Fisch. ex Spreng.) Á.Löve & D.Löve (7944656)
GBIF common names gbif.vernacular answeredasked 2026-10-21names fetched 2026-10-21
WCVP native range wcvp.distribution answeredas of 2026-06-04
GBIF occurrence records gbif.occurrences answeredasked 2026-10-21GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21; 395 records of GBIF's key 3812458, Cerastium davuricum Fisch. ex Spreng. (Kew's file holds it as Cerastium davuricum Fisch. ex Spreng. (accepted)): GBIF occurrence search API; 0 records of GBIF's key 3812487, Cerastium dahuricum Schrank (Kew's file holds it as Cerastium dahuricum Schrank (orthographic under Cerastium davuricum Fisch. ex Spreng.)): GBIF occurrence search API; 1 record within 1 km of a botanic garden, herbarium or zoo left out (1 at a zoo; Wikidata's list)
Habitat climate climate answeredasked 2026-10-21
Daily extremes (NASA POWER) climate.extremes answeredasked 2026-10-21NASA POWER (MERRA-2) daily 1981–2024, cell 59.00_58.750, lapse-corrected +165 m at 6.5 °C/km
Wikidata wikidata answeredasked 2026-10-21found by its label; its IPNI identifier 152198-1 is Kew's for Cerastium davuricum Fisch. ex Spreng.
Wikipedia wikipedia nothing to reportasked 2026-10-21
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 2026-10-21
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 24 datasets via GBIF.org; each carries its own licence.

Cultifolio

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