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Aciphylla dieffenbachii; photograph author not stated, no rights reserved CC0author not stated, no rights reserved · observed growing wild · 2026-01-28

Aciphylla dieffenbachii (F.Muell.) Kirk

Coxella; Dieffenbach's Speargrass; Soft Speargrass

Apiaceae · Chatham Is.

No habitat climate
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Aciphylla dieffenbachii, photograph author not stated, no rights reservedAciphylla dieffenbachii, photograph author not stated, no rights reservedAciphylla dieffenbachii, photograph author not stated, no rights reservedAciphylla dieffenbachii, photograph author not stated, no rights reservedAciphylla dieffenbachii, photograph author not stated, no rights reservedAciphylla dieffenbachii, photograph (c) Tim Park, some rights reserved (CC BY) 57 photographs ›

Summary

Aciphylla dieffenbachii, also called soft speargrass or Dieffenbach's speargrass, is a species of soft speargrass endemic to the Chatham Islands.

Quoted from Wikipedia, "Aciphylla dieffenbachii", CC BY-SA 4.0.

Cultivation

Nothing derived: no habitat climate for this species.

Climate across the habitat

No habitat climate can be derived: Only 1 distinct land cell of the climate grid holds an in-range record placed to within 10 km; three are needed for an envelope. 46 of the 47 in-range records are placed to worse than 10 km, or to no stated accuracy and fewer than three decimals or by something other than a person's observation, and cannot place a climate cell, though they count for the map and its marker.

Natural habitat

Native range as published by WCVP; the marker is where the records are densest and decides nothing.
Openly licensed records inside the range, framed on where they fall.
NativeChatham 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-43.998, -176.5 · in the densest population, 47 records (100% of those in range)
Kew's description“perennial” · “temperate” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 47 georeferenced records inside the native range; the map shows only the 29 openly licensed ones, which alone would put the marker 7 km away. 36 records outside the WCVP native range not used. No climate across the range is derived for this species. 46 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 47 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Aciphylla dieffenbachii, photograph 1did not loadAciphylla dieffenbachii, photograph 2did not loadAciphylla dieffenbachii, photograph 3did not loadAciphylla dieffenbachii, photograph 4did not loadAciphylla dieffenbachii, photograph 5did not loadAciphylla dieffenbachii, photograph 6did not load

Photographs: author not stated, no rights reserved · CC0 (5); (c) Tim Park, some rights reserved (CC BY).

Other Aciphylla 20 in the reference

Aciphylla aurea Aciphylla aurea Golden Spaniard Photo: CC BY, Brett SandfordAciphylla colensoi Aciphylla colensoi Colenso's spaniard Photo: CC BY, Oscar DoveAciphylla congesta Aciphylla congesta Apiaceae Photo: CC BY, John BarklaAciphylla crenulata Aciphylla crenulata Apiaceae Photo: CC BY, John BarklaAciphylla crosby-smithii Aciphylla crosby-smithii Apiaceae Photo: CC BY, Cara-Lisa SchlootsAciphylla dissecta Aciphylla dissecta Apiaceae Photo: CC BY-SA, Jacob LittlejohnAciphylla dobsonii Aciphylla dobsonii Apiaceae Photo: CC BY, Liadan DickieAciphylla glacialis Aciphylla glacialis Mountain celery Photo: CC BY, Eamonn CulhaneAciphylla glaucescens Aciphylla glaucescens Apiaceae Photo: CC BY, John BarklaAciphylla horrida Aciphylla horrida Apiaceae Photo: CC BY, Mitch Van DykeAciphylla kirkii Aciphylla kirkii Apiaceae Photo: CC BY, PampaSorroAciphylla monroi Aciphylla monroi Apiaceae Photo: CC BY, Paul Bell-Butler all 21 ›

Names & registers

Also known as Angelica dieffenbachii; Coxella dieffenbachii; Gingidium dieffenbachii; Ligusticum dieffenbachii. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidataWikipediaiNaturalist

The record

Family
Apiaceae
Described by
(F.Muell.) Kirk
Native to
Chatham Is.
Wild records
47 in range · 29 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 2026-10-21
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; 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 nothing to reportasked 2026-10-21only 1 distinct land cell of the climate grid holds an in-range record placed to within 10 km; three are needed for an envelope
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 5 datasets via GBIF.org; each carries its own licence.

Cultifolio

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