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Acaena minor; photograph (c) Jacob Littlejohn, some rights reserved (CC BY-SA) CC BY-SA(c) Jacob Littlejohn, some rights reserved (CC BY-SA) · observed growing wild · 2025-12-24

Acaena minor (Hook.f.) Allan

Rosaceae · Antipodean Is., Macquarie Is.

Cited as Kew's World Checklist cites it, Acaena minor (Hook.f.) Allan: GBIF's backbone key for this page carries the name with another author, (Hook.fil.) Allan.

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Acaena minor, photograph (c) Jacob Littlejohn, some rights reserved (CC BY-SA)Acaena minor, photograph (c) Genevieve Early, some rights reserved (CC BY)Acaena minor, photograph (c) Saryu Mae 前 朝琉, some rights reserved (CC BY)Acaena minor, photograph (c) Flavien Saboureau, some rights reserved (CC BY)Acaena minor, photograph (c) Julia Palmer, some rights reserved (CC BY)Acaena minor, photograph (c) Christopher Stephens, some rights reserved (CC BY-SA) 38 photographs ›
Habitat figures
Coldest month, mean nightly low
4.6°C
Aug at the habitat, not a floor; extremes not used (sea cell) CHELSA
Warmest month, mean daily high
10°C
Jan, Feb and Mar at the habitat CHELSA
Rain a year (median across the range)
1,212mm
12 months of 25 mm or more in the median year CHELSA
Open-sky light
4–37DLI
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
Rain spread: 70% of the median year's rain takes 9 months, so no short rainy season. rain rule, CHELSA
Not shifted: the shift rule does not apply to this habitat. The chart is in the habitat's months.

Summary

Acaena minor is a species of flowering plant whose range is confined to Australia's subantarctic Macquarie Island and to New Zealand's Campbell and Auckland Islands in the Southern Ocean.

Quoted from Wikipedia, "Acaena minor", CC BY-SA 4.0.

Cultivation

Seasons

The rain rule reads no short rainy season: 70% of the median year's rain (942 mm of 1,219 mm) takes 9 months, December to June and August to September. Mean temperature moves 3.2 °C between the warmest and coldest month. 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

1,219 mm in the median year at the habitat, 942 mm of it December to June and August to September. Wettest month March at 119 mm, driest month November at 90 mm. Across the grid cells of the range the year's total runs 1,059 mm to 1,423 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 1,212 mm, is the year's rain at the top of the page; the 1,219 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: 4 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 2, the highest 90th-percentile month 39).

Warmth and air
Temperature

Monthly means: the coldest month's mean nightly low 4.6 °C in August (across the grid cells of the range 1.8 °C to 6.2 °C), the warmest month's mean daily high 9.9 °C in February (median year across the grid cells of the range, CHELSA). Cold floor: none read. The nearest figure is 4.6 °C, the coldest month's mean nightly low, August, 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: 65 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.

Climate across the habitat

Habitat months, southern hemisphere

Habitat climate of Acaena minor through the yearWarmest months January, February and March, mean daily high 10 °C; coldest month August, mean nightly low 4.6 °C; 1,219 mm of rain in the median year (the twelve monthly medians added). Medians across the range, from CHELSA. Habitat months, southern hemisphere.0°5°10°15°°C · day and nightcold quarter0255075100125150mm rainDLI 4–37RH 65–69%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 28 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 °C10 / 7–1110 / 7–1110 / 7–119 / 6–108 / 5–97 / 5–87 / 4–87 / 4–87 / 4–87 / 4–98 / 5–99 / 6–10
Night °C8 / 5–98 / 6–98 / 5–97 / 4–86 / 3–75 / 2–65 / 2–65 / 2–65 / 2–65 / 2–76 / 3–77 / 4–8
Rain mm108 / 94–134100 / 80–114119 / 99–131112 / 90–126109 / 95–13496 / 81–11191 / 78–106101 / 87–112100 / 87–12596 / 83–11790 / 79–11997 / 86–116
DLI34 / 33–3527 / 25–2918 / 16–1910 / 9–125 / 4–64 / 2–44 / 3–58 / 7–1016 / 14–1725 / 23–2733 / 32–3537 / 35–39
RH %69 / 65–7168 / 64–7067 / 64–7067 / 63–6966 / 63–6965 / 62–6765 / 62–6866 / 62–6866 / 62–6866 / 62–6866 / 63–6867 / 64–70

The daily extremes were read at a NASA POWER cell that is 12% 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 -2.8 °C, 1st-percentile night 1.1 °C, 99th-percentile day 11.1 °C.

How this section is made
Each figure is the median across the 28 grid cells on land that hold in-range records (150 records in those cells; 5 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 2851:6982 (-52.575, 169.125). 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 28 distinct grid cells holding 150 of the 159 in-range records (5 further cells with records at sea, by the elevation layer, left out); extremes and elevation at the typical cell 2851:6982 (its coldest month's mean nightly low nearest the median across cells, though its NASA POWER cell is only 12% land and none of the 11 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 -52.50_169.375, lapse-corrected +80 m at 6.5 °C/km. Elevation: ETOPO 2022, 82 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.
NativeAntipodean Is., Macquarie Is. · 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-54.562, 158.897 · in the densest population, 118 records (60% of those in range)
Kew's description“subshrub” · “temperate” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 198 georeferenced records inside the native range; the climate across the range on the 150 of them in the land cells it reads, of 159 placed to within 10 km; the map shows only the 167 openly licensed ones, which alone would put the marker 1 km away. 24 records outside the WCVP native range not used. 39 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 of the 198 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Acaena minor, photograph 1did not loadAcaena minor, photograph 2did not loadAcaena minor, photograph 3did not loadAcaena minor, photograph 4did not loadAcaena minor, photograph 5did not loadAcaena minor, photograph 6did not load

Photographs: (c) Jacob Littlejohn, some rights reserved (CC BY-SA); (c) Genevieve Early, some rights reserved (CC BY); (c) Saryu Mae 前 朝琉, some rights reserved (CC BY); (c) Flavien Saboureau, some rights reserved (CC BY); (c) Julia Palmer, some rights reserved (CC BY); (c) Christopher Stephens, some rights reserved (CC BY-SA).

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

Azorella polaris Azorella polaris Macquarie Island cabbage Photo: CC BY-SA, Jacob LittlejohnAnisotome latifolia Anisotome latifolia Campbell Island carrot Photo: CC BY-SA, Jacob LittlejohnBulbinella rossii Bulbinella rossii Ross Lily Photo: CC0, author not statedMyosotis capitata Myosotis capitata Boraginaceae Photo: CC BY, Saryu Mae 前 朝琉Pleurophyllum hookeri Pleurophyllum hookeri Asteraceae Photo: CC BY-SA, Jacob LittlejohnUrtica australis Urtica australis Southern Nettle Photo: CC0, author not stated

Other Acaena 27 in the reference

Acaena anserinifolia Acaena anserinifolia Bronze pirri-pirri-bur Photo: CC BY, Stephen HartleyAcaena antarctica Acaena antarctica Antarctic prickly-burr Photo: CC BY, Cody HinchliffAcaena argentea Acaena argentea Rosaceae Photo: CC BY, Bruno AvilezAcaena buchananii Acaena buchananii Rosaceae Photo: CC BY, Jon SullivanAcaena caesiiglauca Acaena caesiiglauca Glaucous pirri-pirri-bur Photo: CC BY, Mel WhitingAcaena caespitosa Acaena caespitosa Rosaceae Photo: CC BY, Felipe HortonAcaena cylindristachya Acaena cylindristachya Rosaceae Photo: CC0, author not statedAcaena elongata Acaena elongata Rosaceae Photo: CC BY, Erick Vélez SánchezAcaena eupatoria Acaena eupatoria Rosaceae Photo: CC BY, Diego BarbozaAcaena fissistipula Acaena fissistipula Rosaceae Photo: CC BY, Pieter PelserAcaena glabra Acaena glabra Rosaceae Photo: CC0, author not statedAcaena inermis Acaena inermis Spineless Acaena Photo: CC BY, John Barkla all 28 ›

Names & registers

Also known as Acaena anserinifolia var. minor; Acaena sanguisorbae var. minor. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidataWikipediaiNaturalist

The record

Family
Rosaceae
Described by
(Hook.f.) Allan
Native to
Antipodean Is., Macquarie Is.
Wild records
198 in range · 167 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 2026-10-21
GBIF species record gbif.species answeredasked 2026-10-21GBIF's key 5371118 is Acaena minor (Hook.fil.) Allan; the page links Kew's Acaena minor (Hook.f.) Allan, and the name is cited as Kew cites it
GBIF synonyms gbif.synonyms answeredasked 2026-10-21
GBIF common names gbif.vernacular answeredasked 2026-10-21names fetched 2026-10-21
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
Habitat climate climate answeredasked 2026-10-21
Daily extremes (NASA POWER) climate.extremes answeredasked 2026-10-21NASA POWER (MERRA-2) daily 1981–2024, cell -52.50_169.375, lapse-corrected +80 m at 6.5 °C/km; read, and set aside: NASA POWER's cell is mostly sea (12% land), so no cold floor is shown
Wikidata wikidata answeredasked 2026-10-21
Wikipedia wikipedia answeredasked 2026-10-21
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 2026-10-21
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 16 datasets via GBIF.org; each carries its own licence.

Cultifolio

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