Aciphylla dieffenbachii

Aciphylla dieffenbachii
Aciphylla dieffenbachii in the Christchurch Botanic Gardens
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Apiales
Family: Apiaceae
Genus: Aciphylla
Species:
A. dieffenbachii
Binomial name
Aciphylla dieffenbachii
Synonyms[1]
  • Angelica dieffenbachii (F.Muell.) Benth. & Hook.f.
  • Coxella dieffenbachii (F.Muell.) Cheeseman & Hemsl.
  • Gingidium dieffenbachii F.Muell.
  • Ligusticum dieffenbachii Hook.f.

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

Description

It is a small perennial with clusters of soft and drooping leaves that divide into blue-green leaflets up to 0.7 m (2 ft 4 in) long.[2][3] It produces a striking upright flowering stem up to 1 m (3 ft 3 in) tall.[4] From November to February it produces yellow flowers, and from January to June it produces a golden-yellow fruit that turns a light brown-grey when mature.[3] It has a robust and deep taproot.[4] If damaged, it will bleed a sticky white latex fluid.[3]

Distribution

It is endemic to the Chatham Islands.[2] Within the Chathams, it has been found on the Chatham, Pitt, Mangere, Little Mangere, and South East (Rangatira) islands, along with some of the Murumuru stacks and islets.[3] It is found solely in coastal areas.[2]

It has also been cultivated, and can be found in gardens on mainland New Zealand.[5]

Taxonomy

Aciphylla dieffenbachii is named after Johann Karl Ernest Dieffenbach, a German physician, geologist and naturalist. Dieffenbach worked for the New Zealand Company and travelled widely across the country.[2]

Conservation status

As of 2023, it was classified as At Risk – Declining.[3]

References

  1. ^ "Aciphylla dieffenbachii". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 10 November 2024.
  2. ^ a b c d "Aciphylla dieffenbachii - The University of Auckland". www.nzplants.auckland.ac.nz. Retrieved 2024-11-09.
  3. ^ a b c d e "Aciphylla dieffenbachii". New Zealand Plant Conservation Network. Retrieved 2024-11-09.
  4. ^ a b "Flora of New Zealand | Taxon Profile | Aciphylla dieffenbachii". www.nzflora.info. Retrieved 2024-11-09.
  5. ^ Eadie, Fiona (2014). 100 best native plants for New Zealand gardens (Revised ed.). Random House New Zealand. pp. 238–240. ISBN 9781775536512.