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Phedimus middendorffianus; photograph Jerzy Opioła, CC BY-SA 4.0, via Wikimedia Commons CC BY-SAJerzy Opioła, CC BY-SA 4.0, via Wikimedia Commons

Phedimus middendorffianus (Maxim.) 't Hart

Crassulaceae · Yakutskiya, Amur +6 · listed by its family as a cactus or succulent

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

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Phedimus middendorffianus, photograph Jerzy Opioła, CC BY-SA 4.0, via Wikimedia CommonsPhedimus middendorffianus, photograph AnRo0002, CC0, via Wikimedia CommonsPhedimus middendorffianus, photograph Kor!An (Андрей Корзун), CC BY-SA 3.0, via Wikimedia CommonsPhedimus middendorffianus, photograph Kor!An (Андрей Корзун), CC BY-SA 3.0, via Wikimedia CommonsPhedimus middendorffianus, photograph AnRo0002, CC0, via Wikimedia CommonsPhedimus middendorffianus, photograph Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0, via Wikimedia Commons 12 photographs ›
Habitat figures
Cold floor (1 night in 100)
-37.6°C
Record low -44.4 °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)
579mm
8 months of 25 mm or more in the median year CHELSA
Open-sky light
4–36DLI
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 · Phedimus

Phedimus is a genus of the succulent family Crassulaceae, with about 18 species, distributed in eastern Europe and Asia. The genus is described with two subgenera, but one of these is also recognized as a separate genus, Aizopsis. Phedimus kamtschaticus is widely grown as an ornamental ground cover and has gained the Royal Horticultural Society's Award of Garden Merit.

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

Cultivation

Grouped as a cactus or succulent, listed under the family Crassulaceae in the archetype table, and Kew describes it as “succulent subshrub”.

Seasons

The rain rule reads a summer growing season: 70% of the median year's rain (431 mm of 567 mm) falls in May to October, warmer than the year (wet-season mean 9.3 °C against a yearly mean of -3.5 °C). Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: November to April.

Rain

567 mm in the median year at the habitat, 431 mm of it May to October. Wettest month August at 115 mm, driest month February at 16 mm. Across the grid cells of the range the year's total runs 370 mm to 1,266 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 579 mm, is the year's rain at the top of the page; the 567 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: 4 to 36 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 0, the highest 90th-percentile month 38).

Warmth and air
Temperature

Coldest: the 1st-percentile night over 44 years at a typical spot in the range is -37.6 °C, the absolute minimum -44.4 °C, 9,900 frost nights in 44 years, 225.0 a year (NASA POWER daily minima). Warmest: the 99th-percentile day is 26.2 °C. Monthly means: the coldest month's mean nightly low -27.9 °C in January (across the grid cells of the range -40.8 °C to -10.4 °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: -37.6 °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: 56 to 74% 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 -140 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.

Group. Listed under the family Crassulaceae in the archetype table, and Kew describes it as “succulent subshrub”. A group is taken only where Kew's description of the species agrees with the table's listing. The table gives no figure and no prose; the cold floor is the habitat's alone.

Climate across the habitat

Habitat months, northern hemisphere

Habitat climate of Phedimus middendorffianus through the yearWarmest month July, mean daily high 22 °C; coldest month January, mean nightly low -27.9 °C; 567 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°frost26.2° 99th-percentile day, NASA POWER-44.4° lowest night in 44 years, NASA POWER°C · day and nightcold quarter050100150200250mm rainDLI 4–36RH 56–74%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 63 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-20 / -36–0-16 / -31–3-9 / -19–91 / -6–159 / 5–1919 / 15–2322 / 18–2618 / 14–2612 / 6–231 / -8–17-10 / -25–9-18 / -34–3
Night °C-28 / -41–-10-25 / -38–-7-18 / -28–-1-8 / -16–5-1 / -3–108 / 6–1612 / 10–2010 / 6–203 / -1–15-7 / -14–7-19 / -31–0-26 / -39–-6
Rain mm19 / 10–3016 / 11–2918 / 13–5029 / 11–7155 / 17–9760 / 40–14095 / 61–218115 / 60–24069 / 41–16137 / 28–8731 / 25–5923 / 14–33
DLI5 / 1–1712 / 5–2323 / 15–3032 / 29–3536 / 34–3836 / 34–3731 / 29–3325 / 22–3020 / 14–2712 / 7–237 / 2–174 / 0–15
RH %74 / 56–9768 / 55–8461 / 54–7058 / 53–6356 / 55–6059 / 54–6563 / 56–6863 / 59–6662 / 60–6461 / 56–6866 / 57–8874 / 56–96
How this section is made
Each figure is the median across the 63 grid cells holding the 65 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 794:6294 (50.275, 134.725). Over 44 years there: absolute minimum -44.4 °C, 1st-percentile night -37.6 °C, 99th-percentile day 26.2 °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 63 distinct grid cells holding 65 of the 65 in-range records; extremes and elevation at the typical cell 794:6294 (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 50.50_135.000, lapse-corrected -140 m at 6.5 °C/km. Elevation: ETOPO 2022, 817 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: 5690563 (Sedum middendorffianum Maxim., 123 records), 7334773 (Aizopsis middendorffianum (Maxim.) Grulich, 10 records), 7676306 (Sedum aizoon var. middendorffianum (Maxim.) Fröd., 0 records), 7943234 (Sedum hybridum Trautv. & C.A.Mey., 5 records). No name was matched to GBIF; the keys are read from Kew's synonymy. How.

NativeYakutskiya, Amur, Khabarovsk, Primorye, Sakhalin, Manchuria, Japan, Korea · introduced: Germany · 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 marker45.05, 135.628 · in the densest population, 56 records (43% of those in range)
Kew's description“succulent subshrub” · “temperate” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 129 georeferenced records inside the native range; the climate across the range on the 65 of them placed to within 10 km; the map shows only the 122 openly licensed ones, which alone would put the marker in the same place. 6 records outside the WCVP native range not used. 64 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 5690563 (Sedum middendorffianum Maxim.): Kew's file holds it as Sedum middendorffianum Maxim. (synonym under Phedimus middendorffianus (Maxim.) 't Hart); 123 records, from GBIF's download.Records also from GBIF's key 7334773 (Aizopsis middendorffianum (Maxim.) Grulich): Kew's file holds it as Aizopsis middendorffianum (Maxim.) Grulich (synonym under Phedimus middendorffianus (Maxim.) 't Hart); 10 records, from GBIF's download.Records also from GBIF's key 7676306 (Sedum aizoon var. middendorffianum (Maxim.) Fröd.): Kew's file holds it as Sedum aizoon var. middendorffianum (Maxim.) Fröd. (synonym under Phedimus middendorffianus (Maxim.) 't Hart); 0 records, from GBIF's search API on the day of the build.Records also from GBIF's key 7943234 (Sedum hybridum Trautv. & C.A.Mey.): Kew's file holds it as Sedum hybridum Trautv. & C.A.Mey. (illegitimate under Phedimus middendorffianus (Maxim.) 't Hart); 5 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 129 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Phedimus middendorffianus, photograph 1did not loadPhedimus middendorffianus, photograph 2did not loadPhedimus middendorffianus, photograph 3did not loadPhedimus middendorffianus, photograph 4did not loadPhedimus middendorffianus, photograph 5did not loadPhedimus middendorffianus, photograph 6did not load

Photographs: Jerzy Opioła, CC BY-SA 4.0, via Wikimedia Commons; AnRo0002, CC0, via Wikimedia Commons (2); Kor!An (Андрей Корзун), CC BY-SA 3.0, via Wikimedia Commons (2); Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0, via Wikimedia Commons.

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

Salix schwerinii Salix schwerinii Common willow Photo: CC BY, Urgamal MagsarMertensia sibirica Mertensia sibirica Siberian bluebells Photo: CC BY-SA, Anneli SaloSilene repens Silene repens Creeping catchfly Photo: CC BY, Urgamal MagsarRibes procumbens Ribes procumbens Trailing redurrant Photo: CC BY, Oleg KosterinPulsatilla dahurica Pulsatilla dahurica Dahurian pasque-flower Photo: CC BY, Tatyana PetrenkoDryopteris fragrans Dryopteris fragrans Fragrant wood fern Photo: CC BY, Matt Berger

Other Phedimus 10 in the reference

Phedimus aizoon Phedimus aizoon Aizoon stonecrop Photo: CC BY, Urgamal MagsarPhedimus ellacombeanus Phedimus ellacombeanus Broad-leaf rock pine Photo: CC BY, Juan Cruzado CortésPhedimus hybridus Phedimus hybridus Hybrid stonecrop Photo: CC BY, Oleksandr ShynderPhedimus kamtschaticus Phedimus kamtschaticus Kamchatka Stonecrop Photo: CC BY, georges3Phedimus obtusifolius Phedimus obtusifolius Crassulaceae Photo: CC BY, Umut Nuri ErdoğanPhedimus selskianus Phedimus selskianus Crassulaceae Photo: Public domain, Secundum naturamPhedimus sichotensis Phedimus sichotensis Crassulaceae Photo: CC BY-SA, Ghislain118…Phedimus spurius Phedimus spurius Caucasian stonecrop Photo: CC BY, Oleg KosterinPhedimus stellatus Phedimus stellatus Starry stonecrop Photo: CC BY, ju_stinePhedimus stevenianus Phedimus stevenianus Stolon stonecrop Photo: CC BY-SA, C T Johansson

Names & registers

Also known as Aizopsis middendorffianum; Sedum middendorffianum var. diffusum; Phedimus middendorffianus subsp. arcuatus; Aizopsis middendorfiana subsp. arctuata; Aizopsis zokuriensis and 10 more. (WCVP, RBG Kew)

IPNIPOWOWikidataWFO

The record

Family
Crassulaceae
Described by
(Maxim.) 't Hart
Native to
Yakutskiya, Amur, Khabarovsk +5
Wild records
129 in range · 122 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 Phedimus middendorffianus (Maxim.) 't Hart (plant_name_id 2411225), 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; 123 records of GBIF's key 5690563, Sedum middendorffianum Maxim. (Kew's file holds it as Sedum middendorffianum Maxim. (synonym under Phedimus middendorffianus (Maxim.) 't Hart)): the GBIF download; 10 records of GBIF's key 7334773, Aizopsis middendorffianum (Maxim.) Grulich (Kew's file holds it as Aizopsis middendorffianum (Maxim.) Grulich (synonym under Phedimus middendorffianus (Maxim.) 't Hart)): the GBIF download; 0 records of GBIF's key 7676306, Sedum aizoon var. middendorffianum (Maxim.) Fröd. (Kew's file holds it as Sedum aizoon var. middendorffianum (Maxim.) Fröd. (synonym under Phedimus middendorffianus (Maxim.) 't Hart)): GBIF occurrence search API; 5 records of GBIF's key 7943234, Sedum hybridum Trautv. & C.A.Mey. (Kew's file holds it as Sedum hybridum Trautv. & C.A.Mey. (illegitimate under Phedimus middendorffianus (Maxim.) 't Hart)): 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 50.50_135.000, lapse-corrected -140 m at 6.5 °C/km
Wikidata wikidata answeredasked 2026-10-22found by Kew's IPNI identifier 986647-1, POWO 986647-1
Wikipedia wikipedia nothing to reportasked 2026-10-22
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 11 datasets via GBIF.org; each carries its own licence.

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