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Thelypteris longipetiolata (K.Iwats.) K.Iwats.

Aspleniaceae · Taiwan · 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 figuresfrom few records
Coldest month, mean nightly low
16.6°C
Jan at the habitat, not a floor; extremes not used (sea cell) CHELSA
Warmest month, mean daily high
28°C
Jul and Aug at the habitat CHELSA
Rain a year (median across the range)
2,767mm
12 months of 25 mm or more in the median year CHELSA
Open-sky light
21–37DLI
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 June to September, read as a summer growing season. rain rule, CHELSA
Northern hemisphere unless you set your site. The chart is in the habitat's months.

From few records: 5 records in 3 grid cells. The records.

Cultivation

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

Seasons

The rain rule reads a summer growing season: 70% of the median year's rain (1,823 mm of 2,570 mm) falls in June to September, warmer than the year (wet-season mean 26.1 °C against a yearly mean of 22.8 °C). Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: December to March.

Rain

2,570 mm in the median year at the habitat, 1,823 mm of it June to September. Wettest month August at 492 mm, driest month January at 42 mm. Across the grid cells of the range the year's total runs 2,568 mm to 3,688 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 2,767 mm, is the year's rain at the top of the page; the 2,570 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: 21 to 37 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 17, the highest 90th-percentile month 38).

Warmth and air
Temperature

Monthly means: the coldest month's mean nightly low 16.6 °C in January (across the grid cells of the range 12.4 °C to 17.5 °C), the warmest month's mean daily high 28.0 °C in July (median year across the grid cells of the range, CHELSA). Cold floor: none read. The nearest figure is 16.6 °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 that is mostly sea and are not used.

Humidity

Relative humidity at the habitat: 66 to 70% 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.

Group. Listed under the family Aspleniaceae in the archetype table, and Kew describes it as “rhizomatous geophyte”. 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

From few records: this habitat climate is read from 5 records in 3 grid cells; a page says so under 12 records or 5 cells, and shows the figures as read.

Habitat months, northern hemisphere

Habitat climate of Thelypteris longipetiolata through the yearWarmest months July and August, mean daily high 28 °C; coldest month January, mean nightly low 16.6 °C; 2,570 mm of rain in the median year (the twelve monthly medians added). Medians across the range, from CHELSA. Habitat months, northern hemisphere.10°15°20°25°30°°C · day and nightcold quarter0100200300400500600mm rainDLI 21–37RH 66–70%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 3 habitat cells, CHELSA cold quarter: the three months around the coldest month's mean nightly low DLI, mol/m²/dayRH %each on its own scale
Figures by month
JanFebMarAprMayJunJulAugSepOctNovDec
Day °C20 / 16–2021 / 17–2122 / 20–2324 / 23–2526 / 25–2727 / 27–2728 / 27–2928 / 27–2826 / 26–2725 / 24–2623 / 21–2421 / 18–21
Night °C17 / 12–1817 / 13–1819 / 15–2021 / 18–2223 / 21–2424 / 23–2524 / 24–2524 / 24–2524 / 23–2422 / 21–2320 / 18–2118 / 14–18
Rain mm42 / 40–17647 / 45–24149 / 48–22573 / 71–207220 / 206–303424 / 398–476449 / 309–503492 / 403–555458 / 434–548176 / 174–37091 / 89–28049 / 46–189
DLI23 / 17–2326 / 20–2632 / 25–3337 / 30–3736 / 31–3634 / 32–3637 / 37–3835 / 34–3532 / 30–3330 / 25–3025 / 19–2521 / 17–22
RH %67 / 66–6768 / 66–6868 / 66–6868 / 67–6868 / 68–6970 / 69–7270 / 68–7270 / 69–7269 / 69–7067 / 66–6866 / 66–6766 / 65–66

The daily extremes were read at a NASA POWER cell that is 24% land: neither it nor the next candidates whose coldest month's mean nightly low is within 2 °C of the median across cells sit in a POWER cell that is mostly land, and the rule reads a cold floor only from a cell that is mostly land, so none is read for this species. Nor is the coldest month's mean nightly low taken as one: it is a mean of a month's lows, not its coldest night. What that cell gave over 44 years: absolute minimum 12.6 °C, 1st-percentile night 16.0 °C, 99th-percentile day 28.0 °C.

How this section is made
Each figure is the median across the 3 grid cells holding the 5 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 1355:6016 (22.225, 120.825). 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 3 distinct grid cells holding 5 of the 5 in-range records; extremes and elevation at the typical cell 1355:6016 (its coldest month's mean nightly low nearest the median across cells, though its NASA POWER cell is only 24% land and none of the 1 next candidates within 2 °C of the median was mostly land); its position is the cell centre. Extremes: NASA POWER (MERRA-2) daily 1981–2024, cell 22.00_120.625, lapse-corrected +390 m at 6.5 °C/km. Elevation: ETOPO 2022, 414 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: 11685034 (Grypothrix longipetiolata (K.Iwats.) S.E.Fawc. & A.R.Sm., 66 records). No name was matched to GBIF; the keys are read from Kew's synonymy. How.

NativeTaiwan · 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 marker25.046, 121.516 · in the densest population, 22 records (76% of those in range)
Kew's description“rhizomatous geophyte” · “subtropical” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 29 georeferenced records inside the native range; the climate across the range on the 5 of them placed to within 10 km; the map shows only the 12 openly licensed ones, which alone would put the marker 325 km away. Under a dozen records behind the climate. 24 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 11685034 (Grypothrix longipetiolata (K.Iwats.) S.E.Fawc. & A.R.Sm.): Kew's file holds it as Grypothrix longipetiolata (K.Iwats.) S.E.Fawc. & A.R.Sm. (synonym under Thelypteris longipetiolata (K.Iwats.) K.Iwats.); 66 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 29 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.

Garcinia multiflora Garcinia multiflora Manyflower Garcinia Photo: CC0, author not statedStrobilanthes longespicata Strobilanthes longespicata Acanthaceae Photo: CC BY, Cheng-Te HsuMedinilla formosana Medinilla formosana Melastomataceae Photo: CC BY, Emily ChangSyzygium euphlebium Syzygium euphlebium Myrtaceae Photo: CC BY, 曾昱承 Yu-Cheng ZengLithocarpus shinsuiensis Lithocarpus shinsuiensis Fagaceae Photo: CC BY-SA, vrxzCallicarpa remotiserrulata Callicarpa remotiserrulata Lamiaceae Photo: CC BY, 曾昱承 Yu-Cheng Zeng

Other Thelypteris 36 in the reference

Thelypteris acuminata Thelypteris acuminata Aspleniaceae Photo: CC BY-SA, Keisotyo Thelypteris beddomei Aspleniaceae Thelypteris bergiana Aspleniaceae Thelypteris confluens Thelypteris confluens Marsh Fern Photo: CC BY-SA, Tony Rebelo Thelypteris decora Aspleniaceae Thelypteris dentata Thelypteris dentata Aspleniaceae Photo: CC BY, Forest & Kim Starr Thelypteris esquirolii Aspleniaceae Thelypteris ferox Aspleniaceae Thelypteris fuertesii Aspleniaceae Thelypteris gymnopteridifrons Aspleniaceae Thelypteris interrupta Thelypteris interrupta Aspleniaceae Photo: CC BY-SA, Krzysztof Ziarnek, KenraizThelypteris kunthii Thelypteris kunthii Aspleniaceae Photo: CC0, Mx. Granger all 37 ›

Names & registers

Also known as Grypothrix longipetiolata; Pronephrium longipetiolatum; Abacopteris longipetiolata; Cyclosorus longipetiolatus. (WCVP, RBG Kew)

IPNIPOWO

The record

Family
Aspleniaceae
Described by
(K.Iwats.) K.Iwats.
Native to
Taiwan
Wild records
29 in range · 12 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 Thelypteris longipetiolata (K.Iwats.) K.Iwats. (plant_name_id 3172043), 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; 66 records of GBIF's key 11685034, Grypothrix longipetiolata (K.Iwats.) S.E.Fawc. & A.R.Sm. (Kew's file holds it as Grypothrix longipetiolata (K.Iwats.) S.E.Fawc. & A.R.Sm. (synonym under Thelypteris longipetiolata (K.Iwats.) K.Iwats.)): the GBIF download; 2 records within 1 km of a botanic garden, herbarium or zoo left out (1 at a botanic garden or arboretum, 1 at a herbarium; 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 22.00_120.625, lapse-corrected +390 m at 6.5 °C/km; read, and set aside: NASA POWER's cell is mostly sea (24% land), so no cold floor is shown
Wikidata wikidata nothing to reportasked 2026-10-22no item carries Kew's IPNI identifier 17459480-1, POWO 17459480-1
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 4 datasets via GBIF.org; each carries its own licence.

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