




72 photographs › At a glance
- Jan
- Feb, shaded
- Mar, shaded
- Apr, shaded
- May, shaded
- Jun
- Jul
- Aug
- Sep
- Oct, shaded
- Nov, shaded
- Dec, shaded
About the genus · Corydalis
Corydalis is a genus of about 540 species of annual and perennial herbaceous plants in the family Papaveraceae, native to the temperate Northern Hemisphere and the high mountains of tropical eastern Africa. They are most diverse in China and the Himalayas, with at least 357 species in China. Corydalis species are the only dicots having only a single cotyledon.
Quoted from Wikipedia, "Corydalis", CC BY-SA 4.0.
Cultivation
Seasons
The rain rule reads a rainy season and no growing season: 70% of the median year's rain (587 mm of 783 mm) falls in February to May and October to December, the cooler part of the year, but the mean nightly low is below freezing in March, April, December and January, so the rule reads no growing season from it. Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: April to June and August to November.
Rain
783 mm in the median year at the habitat, 587 mm of it February to May and October to December. Wettest month April at 120 mm, driest month August at 20 mm. Across the grid cells of the range the year's total runs 424 mm to 1,403 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 869 mm, is the year's rain at the top of the page; the 783 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: 12 to 45 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 10, the highest 90th-percentile month 48).
Warmth and air
Monthly means: the coldest month's mean nightly low -10.0 °C in January (across the grid cells of the range -16.1 °C to -7.2 °C), the warmest month's mean daily high 25.5 °C in July (median year across the grid cells of the range, CHELSA). Cold floor: none read. The nearest figure is -10.0 °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.
Relative humidity at the habitat: 49 to 56% 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
Mean daily high from -2 °C in Jan to 26 °C in Jul; mean nightly low from -10 °C in Jan to 14 °C in Jul and Aug. The cold quarter, Dec to Feb, is the three months around the coldest month's mean nightly low. 783 mm of rain in the median year (the twelve monthly medians added), the wettest month Apr. The bands show the 10th to 90th percentile across 134 habitat cells. Beneath: daily light integral and relative humidity through the year, each on its own scale.
Figures by month
| Figure | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day °C | -2 / -8–2 | 0 / -6–4 | 6 / -2–9 | 13 / 4–16 | 18 / 10–22 | 23 / 15–27 | 26 / 17–30 | 25 / 17–29 | 20 / 12–24 | 13 / 5–16 | 6 / -2–10 | 0 / -7–4 |
| Night °C | -10 / -16–-7 | -9 / -15–-6 | -4 / -10–-1 | 2 / -5–5 | 7 / 0–10 | 11 / 4–14 | 14 / 7–17 | 14 / 6–16 | 9 / 2–11 | 2 / -5–5 | -3 / -11–-1 | -8 / -15–-5 |
| Rain mm | 57 / 27–139 | 62 / 33–171 | 93 / 45–204 | 120 / 56–205 | 110 / 50–170 | 53 / 18–110 | 40 / 14–101 | 20 / 6–60 | 26 / 10–49 | 66 / 28–101 | 68 / 39–145 | 68 / 32–156 |
| DLI | 14 / 12–18 | 21 / 18–24 | 28 / 26–32 | 36 / 34–40 | 41 / 39–43 | 45 / 42–47 | 45 / 41–48 | 42 / 38–44 | 33 / 30–37 | 22 / 20–26 | 15 / 13–19 | 12 / 10–15 |
| RH % | 55 / 50–60 | 56 / 52–60 | 56 / 54–60 | 55 / 53–59 | 55 / 50–59 | 51 / 45–57 | 50 / 43–56 | 49 / 43–55 | 50 / 45–55 | 53 / 50–57 | 54 / 51–58 | 54 / 50–59 |
The daily extremes were not used: the correction for elevation, -1529 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 -25.0 °C, 1st-percentile night -15.5 °C.
How this section is made
Natural habitat
How this section is made
Photographs
Photographs: (c) Вячеслав Юсупов, some rights reserved (CC BY) (5); (c) dschigel, some rights reserved (CC BY).
Related
Similar habitat climate The 6 nearest by mean daily high, mean nightly low and rain, month by month. How.
Alcea nudiflora Malvaceae Photo: CC BY, Dmitry Kulakov
Gymnospermium alberti Berberidaceae Photo: CC BY, Вячеслав Юсупов
Inula grandis Asteraceae Photo: CC BY, Dr. Alexey Yakovlev
Crocus alatavicus Iridaceae Photo: CC BY, Oleg Kosterin
Linaria popovii Plantaginaceae Photo: CC BY, Dr. Alexey Yakovlev
Iris orchioides Iridaceae Photo: CC BY, dschigelOther Corydalis 90 in the reference
Corydalis adunca Papaveraceae Photo: CC BY, Wang.QG Corydalis afghanica Papaveraceae Corydalis aitchisonii Papaveraceae
Corydalis ambigua Small corydalis Photo: CC BY, Pavel Smirnov
Corydalis angustifolia Papaveraceae Photo: CC BY, Denis Ibaev
Corydalis aurea Golden corydalis Photo: CC BY, Matt Berger
Corydalis balansae Papaveraceae Photo: CC0, author not stated
Corydalis benecincta Papaveraceae Photo: CC BY, Morten Ross Corydalis blanda Papaveraceae
Corydalis bracteata Large-bracted corydalis Photo: CC BY, Marina E.
Corydalis bungeana Bunge’s corydalis Photo: CC BY, Jane Charlen
Corydalis buschii Busch's corydalis Photo: CC BY, Andrew Bazdyrev all 91 ›Names & registers
Also known as Corydalis cabulica; Corydalis cyrtocentra; Corydalis diphylla var. cyrtocentra; Pistolochia cabulica; Pistolochia ledebouriana and 1 more. (GBIF Backbone)
The record
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 answeredasked 2026-10-21gbif.synonyms answeredasked 2026-10-21gbif.vernacular answeredasked 2026-10-21names fetched 2026-10-21wcvp.distribution answeredas of 2026-06-04gbif.occurrences answeredas of 2026-10-21GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21; 31 records within 1 km of a botanic garden, herbarium or zoo left out (31 at a botanic garden or arboretum; Wikidata's list)climate answeredasked 2026-10-21climate.extremes answeredasked 2026-10-21NASA POWER (MERRA-2) daily 1981–2024, cell 43.00_76.875, lapse-corrected -1529 m at 6.5 °C/km; read, and set aside: the correction for elevation, -1529 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 shownwikidata answeredasked 2026-10-21wikipedia nothing to reportasked 2026-10-21inat.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 2026-10-22inat.photos.cultivated not askedgbif.media answeredasked 2026-10-21openalex not askednot yet asked for this reference; a later fill takes the papers from OpenAlex's snapshotEvery 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 14 datasets via GBIF.org; each carries its own licence.






