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Nephrolepis × pseudobiserrata Miyam.

Nephrolepidaceae · Nansei-shoto, Taiwan · listed by its genus as a fern or moss

A hybrid: N. biserrata × N. brownii, the parents Kew's World Checklist states for it (WCVP, RBG Kew).

Photographs not checked iNaturalist was 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
Coldest month, mean nightly low
14.2°C
Jan at the habitat, not a floor; extremes not used (the weather cell's ground is too far off) CHELSA
Warmest month, mean daily high
29°C
Jul and Aug at the habitat CHELSA
Rain a year (median across the range)
3,098mm
12 months of 25 mm or more in the median year CHELSA
Open-sky light
15–38DLI
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 November, 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 · Nephrolepis

Nephrolepis is a genus of about 30 species of ferns. It is the only genus in the family Nephrolepidaceae, placed in the suborder Aspleniineae of the order Polypodiales in the Pteridophyte Phylogeny Group classification of 2016. Species in this genus include plants commonly referred to as Boston ferns. More on Wikipedia ›

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

Cultivation

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

Seasons

The rain rule reads a summer growing season: 70% of the median year's rain (2,347 mm of 3,047 mm) falls in May to November, warmer than the year (wet-season mean 25.6 °C against a yearly mean of 22.4 °C). Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: November to May.

Rain

3,047 mm in the median year at the habitat, 2,347 mm of it May to November. Wettest month September at 484 mm, driest month January at 113 mm. Across the grid cells of the range the year's total runs 2,530 mm to 3,807 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 3,098 mm, is the year's rain at the top of the page; the 3,047 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: 15 to 38 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 14, the highest 90th-percentile month 39).

Warmth and air
Temperature

Monthly means: the coldest month's mean nightly low 14.2 °C in January (across the grid cells of the range 12.4 °C to 18.1 °C), the warmest month's mean daily high 29.3 °C in July (median year across the grid cells of the range, CHELSA). Cold floor: none read. The nearest figure is 14.2 °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.

Humidity

Relative humidity at the habitat: 63 to 69% 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 genus Nephrolepis in the archetype table, and Kew describes it as “perennial or 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

Habitat months, northern hemisphere

Habitat climate of Nephrolepis × pseudobiserrata through the yearWarmest months July and August, mean daily high 29 °C; coldest month January, mean nightly low 14.2 °C; 3,047 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°35°°C · day and nightcold quarter0100200300400500600mm rainDLI 15–38RH 63–69%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 13 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 °C18 / 17–2118 / 17–2221 / 20–2424 / 23–2526 / 25–2728 / 27–2929 / 27–3129 / 27–3028 / 26–2825 / 24–2622 / 22–2419 / 18–22
Night °C14 / 12–1814 / 13–1916 / 15–2019 / 18–2322 / 21–2424 / 23–2525 / 24–2625 / 24–2624 / 23–2522 / 21–2419 / 18–2216 / 14–19
Rain mm113 / 32–247166 / 37–302148 / 42–240150 / 64–222272 / 198–315355 / 327–475298 / 234–498341 / 317–557484 / 408–557379 / 143–455218 / 73–378123 / 36–265
DLI16 / 14–2418 / 16–2724 / 22–3329 / 27–3731 / 29–3633 / 31–3538 / 36–3935 / 34–3630 / 29–3324 / 23–3118 / 17–2615 / 14–22
RH %64 / 62–7265 / 63–7265 / 64–7266 / 65–7168 / 64–7169 / 66–7268 / 65–7168 / 65–7267 / 65–7065 / 63–7164 / 63–7163 / 62–71

The daily extremes were not used: the correction for elevation, -1177 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 3.7 °C, 1st-percentile night 9.2 °C.

How this section is made
Each figure is the median across the 13 grid cells holding the 13 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 1321:6030 (23.925, 121.525). 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 13 distinct grid cells holding 13 of the 13 in-range records; extremes and elevation at the typical cell 1321:6030 (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 24.00_121.250, lapse-corrected -1177 m at 6.5 °C/km. Elevation: ETOPO 2022, 146 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.
NativeNansei-shoto, Taiwan · 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 marker22.05, 121.533 · in the densest population, 25 records (100% of those in range)
Kew's description“perennial or rhizomatous geophyte” · “subtropical” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 25 georeferenced records inside the native range; the climate across the range on the 13 of them placed to within 10 km; the map shows only the 11 openly licensed ones, which alone would put the marker 234 km away. 12 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.
How this section is made
The map marker: the openly licensed record nearest the middle of the densest 1° population inside the densest 2° block of the 25 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 was skipped (not asked) when this page was built; GBIF's observation records with coordinates hold none. 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.

Glochidion lanceolatum Glochidion lanceolatum Phyllanthaceae Photo: CC BY, 楊富鈞Melicope semecarpifolia Melicope semecarpifolia Rutaceae Photo: CC BY, 黃美滿Lilium longiflorum Lilium longiflorum Easter lily Photo: CC BY, Louis AuregliaBerchemia lineata Berchemia lineata Rhamnaceae Photo: CC BY, chiuluanAsplenium setoi Asplenium setoi Aspleniaceae Photo: CC BY, 黃美滿Tectaria decurrens Tectaria decurrens Tectariaceae Photo: CC BY, Kiwi Shen

Other Nephrolepis 13 in the reference

Nephrolepis acutifolia Nephrolepis acutifolia Fishbone Fern Photo: CC BY-SA, Steve FitzgeraldNephrolepis biserrata Nephrolepis biserrata Nephrolepidaceae Photo: CC BY, Luis Carlos12Nephrolepis brownii Nephrolepis brownii Asian Sword Fern Photo: CC BY, nick_goldwaterNephrolepis cordifolia Nephrolepis cordifolia Narrow sword fern Photo: CC BY, Saryu Mae 前 朝琉Nephrolepis exaltata Nephrolepis exaltata Sword fern Photo: CC BY, The Great WalterNephrolepis falcata Nephrolepis falcata Fishtail swordfern Photo: CC0, author not stated Nephrolepis falciformis Nephrolepidaceae Nephrolepis flexuosa Nephrolepis flexuosa Thermal ladder fern Photo: CC BY, Lisa BennettNephrolepis hirsutula Nephrolepis hirsutula Scaly swordfern Photo: CC BY, Alexis López HernándezNephrolepis obliterata Nephrolepis obliterata Australian sword fern Photo: CC BY-SA, Krzysztof Ziarnek, KenraizNephrolepis pectinata Nephrolepis pectinata Basket fern Photo: CC BY, Skjold SøndergaardNephrolepis pendula Nephrolepis pendula Nephrolepidaceae Photo: CC BY, Cheng-Wei CHEN all 14 ›

Names & registers

GBIFPOWOIPNIWFOWikidataiNaturalist

The record

Family
Nephrolepidaceae
Described by
Miyam.
Native to
Nansei-shoto, Taiwan
Wild records
25 in range · 11 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 2026-10-22
GBIF synonyms gbif.synonyms answeredasked 2026-10-22
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 answeredas of 2026-10-21GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21; 1 record within 1 km of a botanic garden, herbarium or zoo left out (1 at a botanic garden or arboretum; 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 24.00_121.250, lapse-corrected -1177 m at 6.5 °C/km; read, and set aside: the correction for elevation, -1177 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 shown
Wikidata wikidata answeredasked 2026-10-22
Wikipedia wikipedia nothing to reportasked 2026-10-22
iNaturalist photographs, wild inat.photos.wild nothing to reportasked 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 nothing to reportasked 2026-10-22
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 5 datasets via GBIF.org; each carries its own licence.

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