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Leontodon tuberosus; photograph (c) zebedeugalinha, some rights reserved (CC BY) CC BY(c) zebedeugalinha, some rights reserved (CC BY) · observed growing wild · 2026-03-11

Leontodon tuberosus L.

Hawkbit

Asteraceae · Baleares, Corse +22

Cited as Kew's World Checklist cites it, Leontodon tuberosus L.: GBIF's backbone key for this page carries the name with another author, Batt., 1889.

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Leontodon tuberosus, photograph (c) zebedeugalinha, some rights reserved (CC BY)Leontodon tuberosus, photograph (c) zebedeugalinha, some rights reserved (CC BY)Leontodon tuberosus, photograph (c) Mehdi Chetibi, some rights reserved (CC BY)Leontodon tuberosus, photograph (c) Mehdi Chetibi, some rights reserved (CC BY)Leontodon tuberosus, photograph (c) Mehdi Chetibi, some rights reserved (CC BY)Leontodon tuberosus, photograph (c) Mehdi Chetibi, some rights reserved (CC BY) 74 photographs ›
Habitat figures
Cold floor (1 night in 100)
2.9°C
Record low -1.5 °C in 44 years, at a typical spot in the range NASA POWER
Warmest month, mean daily high
29°C
Jul and Aug at the habitat CHELSA
Rain a year (median across the range)
690mm
9 months of 25 mm or more in the median year CHELSA
Open-sky light
14–48DLI
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 winters: the rain comes October to March, read as a winter growing season. rain rule, CHELSA
Northern hemisphere unless you set your site. The chart is in the habitat's months.

Summary

Leontodon tuberosus is a species of plant in the family Asteraceae.

Quoted from Wikipedia, "Leontodon tuberosus", CC BY-SA 4.0.

Cultivation

Seasons

The rain rule reads a winter growing season: 70% of the median year's rain (525 mm of 673 mm) falls in October to March, cooler than the year (wet-season mean 13.1 °C against a yearly mean of 17.0 °C). Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: April to September.

Rain

673 mm in the median year at the habitat, 525 mm of it October to March. Wettest month December at 118 mm, driest month July at 3 mm; 1 month under 5 mm. Across the grid cells of the range the year's total runs 515 mm to 1,006 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 690 mm, is the year's rain at the top of the page; the 673 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: 14 to 48 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 50).

Warmth and air
Temperature

Coldest: the 1st-percentile night over 44 years at a typical spot in the range is 2.9 °C, the absolute minimum -1.5 °C, 17 frost nights in 44 years (NASA POWER daily minima). Warmest: the 99th-percentile day is 37.3 °C. Monthly means: the coldest month's mean nightly low 6.6 °C in January (across the grid cells of the range 3.0 °C to 10.3 °C), the warmest month's mean daily high 29.4 °C in July and August (median year across the grid cells of the range, CHELSA). Cold floor: 2.9 °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: 57 to 61% 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 +94 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 Leontodon tuberosus through the yearWarmest months July and August, mean daily high 29 °C; coldest month January, mean nightly low 6.6 °C; 673 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.-10°0°10°20°30°40°frost37.3° 99th-percentile day, NASA POWER-1.5° lowest night in 44 years, NASA POWER°C · day and nightcold quarter050100150200mm rainDLI 14–48RH 57–61%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 832 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 °C14 / 10–1614 / 11–1717 / 13–1919 / 15–2422 / 19–2727 / 22–3029 / 25–3229 / 25–3226 / 23–3122 / 19–2817 / 14–2215 / 11–18
Night °C7 / 3–107 / 3–109 / 5–1211 / 8–1414 / 11–1717 / 15–2020 / 17–2220 / 17–2318 / 15–2216 / 11–1911 / 7–158 / 4–12
Rain mm93 / 60–18580 / 49–14760 / 42–9357 / 18–8540 / 5–6912 / 1–423 / 1–215 / 1–3731 / 2–8478 / 21–12596 / 65–143118 / 75–163
DLI16 / 12–2022 / 18–2631 / 27–3438 / 34–4244 / 40–4848 / 44–5048 / 45–5044 / 39–4634 / 29–3924 / 19–3017 / 13–2314 / 10–19
RH %60 / 58–6360 / 57–6258 / 56–6058 / 53–6157 / 53–6257 / 52–6257 / 51–6258 / 52–6258 / 54–6159 / 56–6360 / 55–6361 / 57–64
How this section is made
Each figure is the median across the 832 grid cells on land that hold in-range records (2181 records in those cells; 11 more cells hold records but no land by the elevation layer, so those records sit at sea and the cells are left out), 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 1162:4301 (31.875, 35.075). Over 44 years there: absolute minimum -1.5 °C, 1st-percentile night 2.9 °C, 99th-percentile day 37.3 °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 832 distinct grid cells holding 2181 of the 2196 in-range records (11 further cells with records at sea, by the elevation layer, left out); extremes and elevation at the typical cell 1162:4301 (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 32.00_35.000, lapse-corrected +94 m at 6.5 °C/km. Elevation: ETOPO 2022, 374 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.
NativeBaleares, Corse, France, Portugal, Sardegna, Spain, Albania, Bulgaria, Greece, Italy, Kriti, Sicilia, Turkey-in-Europe, Yugoslavia, Algeria, Egypt, Libya, Morocco, Tunisia, Cyprus, East Aegean Is., Lebanon-Syria, Palestine, Turkey · 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 marker32.6, 35.128 · in the densest population, 1248 records (54% of those in range)
Kew's description“subtropical” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 2322 georeferenced records inside the native range; the climate across the range on the 2181 of them in the land cells it reads, of 2196 placed to within 10 km; the map shows only the 550 openly licensed ones, which alone would put the marker 2983 km away. 1 record outside the WCVP native range not used. 126 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 3137449 (Thrincia tuberosa (L.) DC.): Kew's file holds it as Thrincia tuberosa (L.) DC. (synonym under Leontodon tuberosus L.); 900 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 of the 2322 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Leontodon tuberosus, photograph 1did not loadLeontodon tuberosus, photograph 2did not loadLeontodon tuberosus, photograph 3did not loadLeontodon tuberosus, photograph 4did not loadLeontodon tuberosus, photograph 5did not loadLeontodon tuberosus, photograph 6did not load

Photographs: (c) zebedeugalinha, some rights reserved (CC BY) (2); (c) Mehdi Chetibi, some rights reserved (CC BY) (4).

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

Geropogon hybridus Geropogon hybridus Pasture Goatsbeard Photo: CC BY-SA, Chaym TurakMoraea sisyrinchium Moraea sisyrinchium Barbary-nut Photo: CC BY, Ioannis MagourasUmbilicus horizontalis Umbilicus horizontalis Crassulaceae Photo: CC BY, Michael, Antoni and Nihat HinczewskiAnagyris foetida Anagyris foetida Stinking Bean Trefoil Photo: CC0, author not statedCeratonia siliqua Ceratonia siliqua Carob Photo: CC BY, zebedeugalinhaThymbra capitata Thymbra capitata Persian-hyssop Photo: CC BY, Duarte Frade

Other Leontodon 6 in the reference

Leontodon boryi Leontodon boryi Asteraceae Photo: CC BY, Santiago Martín-BravoLeontodon hispidus Leontodon hispidus Rough hawkbit Photo: CC0, author not statedLeontodon hyoseroides Leontodon hyoseroides Asteraceae Photo: CC BY, Wolfgang JauchLeontodon incanus Leontodon incanus Asteraceae Photo: CC0, author not statedLeontodon rigens Leontodon rigens Rigid hawkbit Photo: CC BY, Michael, Antoni and Nihat HinczewskiLeontodon saxatilis Leontodon saxatilis Asteraceae Photo: CC BY-SA, Claus Ableiter

Names & registers

Also known as Thrincia tuberosa; Apargia bulbosa; Apargia lyrata; Apargia tuberosa; Colobium tripolitanum and 28 more. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidataWikipediaiNaturalist

The record

Family
Asteraceae
Described by
L.
Native to
Baleares, Corse, France +21
Wild records
2322 in range · 550 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 2026-10-22GBIF's key 4252823 is Leontodon tuberosus Batt., 1889; Kew accepts Leontodon tuberosus L., and the name is cited as Kew accepts it; its synonyms and common names are read from GBIF's Leontodon tuberosus L. (3137448), which GBIF files under Thrincia tuberosa (L.) DC. (3137449) too
GBIF synonyms gbif.synonyms answeredasked 2026-10-2237 read from GBIF's Leontodon tuberosus L. (3137448), which GBIF files under Thrincia tuberosa (L.) DC. (3137449)
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 answeredasked 2026-10-22GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21; 900 records of GBIF's key 3137449, Thrincia tuberosa (L.) DC. (Kew's file holds it as Thrincia tuberosa (L.) DC. (synonym under Leontodon tuberosus L.)): GBIF occurrence search API; 26 records within 1 km of a botanic garden, herbarium or zoo left out (19 at a botanic garden or arboretum, 1 at a herbarium, 6 at a zoo; Wikidata's list)
Habitat climate climate answeredasked 2026-10-22
Daily extremes (NASA POWER) climate.extremes answeredasked 2026-10-22NASA POWER (MERRA-2) daily 1981–2024, cell 32.00_35.000, lapse-corrected +94 m at 6.5 °C/km
Wikidata wikidata answeredasked 2026-10-22found by its label; its IPNI identifier 229530-1 is Kew's for Leontodon tuberosus L.
Wikipedia wikipedia answeredasked 2026-10-22
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 2026-10-22read from the page's key and its other keys: 76 from GBIF's key 3137449
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 61 datasets via GBIF.org; each carries its own licence.

Cultifolio

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