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Hemionitis radiata (L.) Christenh.

Pteridaceae · Mexico Central, Mexico Northeast +32 · listed by its family as a fern or moss

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

Photographs not checked iNaturalist and GBIF media were skipped (not asked) when this page was built. Not asked, or not answered, is not "none": nothing here claims there is none. Why the site says it this way.
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Habitat figures
Cold floor (1 night in 100)
18.3°C
Record low 14.9 °C in 44 years, at a typical spot in the range NASA POWER
Warmest month, mean daily high
28°C
Mar, Apr, May and Aug at the habitat CHELSA
Rain a year (median across the range)
2,201mm
12 months of 25 mm or more in the median year CHELSA
Open-sky light
28–40DLI
Lowest to highest month (DLI) CHELSA
The year in the habitat's months, not shifted
  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec
A sharp rainy season, May to October (the habitat's months, not shifted), in a year of even temperature. rain rule, CHELSA
Not shifted: the shift rule does not apply to this habitat. The chart is in the habitat's months.

Cultivation

Grouped as a fern or moss, listed under the family Pteridaceae in the archetype table, and Kew describes it as “perennial”.

Seasons

The rain rule reads a sharp season: 70% of the median year's rain (1,589 mm of 2,073 mm) falls in May to October. The temperature curve is flat, 3.0 °C between the warmest and coldest month, so the growing-season rule does not infer a growing season from it. Months are the habitat's, southern hemisphere. The temperature curve moves under 4 °C between the warmest and coldest month, where the shift rule does not apply, so they are not shifted for a collection elsewhere.

Rain

2,073 mm in the median year at the habitat, 1,589 mm of it May to October. Wettest month September at 315 mm, driest month March at 59 mm. Across the grid cells of the range the year's total runs 1,495 mm to 3,213 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 2,201 mm, is the year's rain at the top of the page; the 2,073 mm here is the median year's, the twelve monthly medians added, which the rain rule reads. Habitat calendar, southern hemisphere; median year across the grid cells of the range, CHELSA.

Light

Open sky over the habitat: 28 to 40 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 23, the highest 90th-percentile month 44).

Warmth and air
Temperature

Coldest: the 1st-percentile night over 44 years at a typical spot in the range is 18.3 °C, the absolute minimum 14.9 °C, no frost in 44 years (NASA POWER daily minima). Warmest: the 99th-percentile day is 30.3 °C. Monthly means: the coldest month's mean nightly low 17.6 °C in January (across the grid cells of the range 12.2 °C to 22.1 °C), the warmest month's mean daily high 28.4 °C in April (median year across the grid cells of the range, CHELSA). Cold floor: 18.3 °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: 62 to 68% 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 +392 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 Pteridaceae in the archetype table, and Kew describes it as “perennial”. 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, southern hemisphere

Habitat climate of Hemionitis radiata through the yearWarmest months March, April, May and August, mean daily high 28 °C; coldest month January, mean nightly low 17.6 °C; 2,073 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, southern hemisphere.10°15°20°25°30°35°30.3° 99th-percentile day, NASA POWER14.9° lowest night in 44 years, NASA POWER°C · day and nightcold quarter0100200300400500600mm rainDLI 28–40RH 62–68%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 139 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 °C25 / 21–3026 / 22–3028 / 23–3128 / 24–3128 / 24–3127 / 24–3027 / 24–2928 / 24–3027 / 23–3027 / 22–3126 / 22–3025 / 21–29
Night °C18 / 12–2218 / 13–2219 / 14–2320 / 16–2321 / 17–2421 / 17–2421 / 16–2421 / 16–2421 / 16–2420 / 16–2419 / 14–2318 / 13–22
Rain mm67 / 12–16565 / 11–16359 / 12–24582 / 26–336164 / 99–408306 / 148–466293 / 118–456282 / 127–482315 / 81–559229 / 71–397121 / 31–26590 / 16–198
DLI29 / 24–3533 / 27–3836 / 30–4240 / 28–4439 / 25–4334 / 24–4135 / 26–4135 / 30–4032 / 28–3931 / 27–3830 / 25–3428 / 23–33
RH %65 / 56–7064 / 56–6962 / 57–6863 / 58–7165 / 60–7268 / 64–7267 / 63–7267 / 63–7268 / 62–7267 / 62–7266 / 60–7166 / 59–71

Records on both sides of the equator: the 86 cells at least 10° south of it have seasons six months apart and are left out, not combined into a year no place has. These figures are across the 139 cells that remain: the 100 at least 10° north and the 39 within 10° of the equator, which stay in either way.

How this section is made
Each figure is the median across the 139 grid cells holding the 172 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 1436:2051 (18.175, -77.425). Over 44 years there: absolute minimum 14.9 °C, 1st-percentile night 18.3 °C, 99th-percentile day 30.3 °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 139 distinct grid cells holding 172 of the 315 in-range records on the northern side of the equator (100 cells poleward of 10° north, 86 poleward of 10° south: the two sides' seasons are not combined, and cells within 10° of the equator stay in); extremes and elevation at the typical cell 1436:2051 (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 18.00_-77.500, lapse-corrected +392 m at 6.5 °C/km. Elevation: ETOPO 2022, 595 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 key of the name Kew's World Checklist holds as this plant: 8475296 (Adiantopsis radiata (L.) Fée, 2000 records). No name was matched to GBIF; the keys are read from Kew's synonymy. How.

NativeMexico Central, Mexico Northeast, Mexico Gulf, Mexican Pacific Is., Mexico Southwest, Mexico Southeast, Belize, Costa Rica, Guatemala, Honduras, Nicaragua, Panama, Cuba, Dominican Republic, Haiti, Jamaica, Leeward Is. AB Ant, Trinidad-Tobago, Venezuelan Antilles, Windward Is., French Guiana, Guyana, Surinam, Venezuela, Bolivia, Colombia, Ecuador, Peru, Brazil West-Central, Brazil Northeast, Brazil Southeast, Brazil South, Argentina Northeast, Paraguay · 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 marker-25.792, -54.542 · in the densest population, 178 records (15% of those in range)
Kew's description“perennial” · “wet tropical” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 1198 georeferenced records inside the native range; the climate across the range on the 172 of them in the land cells it reads, of 315 placed to within 10 km; the map shows only the 998 openly licensed ones, which alone would put the marker 9 km away. 25 records outside the WCVP native range not used. 883 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 8475296 (Adiantopsis radiata (L.) Fée): Kew's file holds it as Adiantopsis radiata (L.) Fée (synonym under Hemionitis radiata (L.) Christenh.); 2,000 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 of the 1198 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Not checked. iNaturalist and GBIF media were skipped (not asked) when this page was built. Not a statement that none exist.

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

Cecropia obtusifolia Cecropia obtusifolia Trumpet tree Photo: CC BY, José Javier Barrios FloresVasconcellea cauliflora Vasconcellea cauliflora Caricaceae Photo: CC BY, Neptalí Ramírez MarcialProsthechea pygmaea Prosthechea pygmaea Dwarf butterfly orchid Photo: CC BY-SA, Turner BrockmanTillandsia variabilis Tillandsia variabilis Leatherleaf airplant Photo: CC BY, Pete DiamondGuarea glabra Guarea glabra Alligatorwood Photo: CC BY, Alexis López HernándezCycnoches egertonianum Cycnoches egertonianum Orchidaceae Photo: CC BY, Eduardo Chacón Madrigal

Other Hemionitis 74 in the reference

Hemionitis acrostica Hemionitis acrostica Pteridaceae Photo: CC BY-SA, Krzysztof Ziarnek, Kenraiz Hemionitis alabamensis Pteridaceae Hemionitis arifolia Pteridaceae Hemionitis aspera Pteridaceae Hemionitis atropurpurea Pteridaceae Hemionitis bonariensis Pteridaceae Hemionitis bradburyi Pteridaceae Hemionitis breweri Pteridaceae Hemionitis bridgesii Pteridaceae Hemionitis calidirupium Pteridaceae Hemionitis californica Pteridaceae Hemionitis calomelanos Pteridaceae all 75 ›

Names & registers

Also known as Adiantopsis radiata; Cheilanthes propinqua; Adiantum radiatum; Cheilanthes radiata; Adiantopsis ternata and 3 more. (WCVP, RBG Kew)

IPNIPOWOWikidataWFO

The record

Family
Pteridaceae
Described by
(L.) Christenh.
Native to
Mexico Central, Mexico Northeast, Mexico Gulf +31
Wild records
1198 in range · 998 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 Hemionitis radiata (L.) Christenh. (plant_name_id 3218246), 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 answeredas of 2026-10-21this 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; 2000 records of GBIF's key 8475296, Adiantopsis radiata (L.) Fée (Kew's file holds it as Adiantopsis radiata (L.) Fée (synonym under Hemionitis radiata (L.) Christenh.)): the GBIF download; 13 records within 1 km of a botanic garden, herbarium or zoo left out (11 at a botanic garden or arboretum, 2 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 18.00_-77.500, lapse-corrected +392 m at 6.5 °C/km
Wikidata wikidata answeredasked 2026-10-22found by Kew's IPNI identifier 77182676-1, POWO 77182676-1
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 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 nothing to reportasked 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 160 datasets via GBIF.org; each carries its own licence.

Cultifolio

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