Pringlea

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Kerguelen cabbage
Pringlea antiscorbutica.JPG
Pringlea antiscorbutica Hook.f. (Botany of Antarctic - Plate XC-XCI).jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Brassicales
Family: Brassicaceae
Genus: Pringlea
T.Anderson ex Hook.f.
Species:
P. antiscorbutica
Binomial name
Pringlea antiscorbutica

Pringlea antiscorbutica, commonly known as Kerguelen cabbage, is a flowering plant and the sole member of the monotypic genus Pringlea in the family Brassicaceae. Its common name comes from the archipelago of its discovery, the Kerguelen Islands, and its generic name derives from Sir John Pringle, president of the Royal Society at the time of its discovery by Captain James Cook's Surgeon, William Anderson in 1776.

Contents

Despite its appearance and edibility, it is not related to the common broadleaf plantain.

Description

Pringlea has leaf rosettes of up to 45 cm in diameter, that sit on top of perennial half woody stems of about 15 cm thick and up to 1 m long. The erect flowering stems remain on the plants for many years. [1]

Distribution

The species grows on the remote Heard Island and McDonald Islands, Crozet, Prince Edward and Kerguelen Islands. [2] The ancestor of P. antiscorbutica probably migrated from South America some five million years ago. [3]

Kerguelen cabbages on Mayes island (Kerguelen Islands) Pringlea antiscorbutica Mayes fake.jpg
Kerguelen cabbages on Mayes island (Kerguelen Islands)

Ecology

The home islands of Kerguelen cabbage are at roughly 50° south latitude and constantly buffeted by strong winds, making the islands unfavorable for wind pollination, except on infrequent mild days. This climate, plus the absence of potential insect pollinators, means the Kerguelen cabbage can only survive through a process of self-pollination. [2]

An old Kerguelen cabbage on the Peninsule Rallier du Baty, Kerguelen Island Pringlea antiscorbutica (old) edit.JPG
An old Kerguelen cabbage on the Péninsule Rallier du Baty, Kerguelen Island

The plants grow to a diameter of about 50 cm in around four years, and flower for the first time in their third or fourth year. [4] At the mature stage, this species exhibits several adaptations linked to cold tolerance such as high polyamine levels. [5] [6] Pringlea has a very high leaf water content (above 83%) and the waterflow from the root to the leaves is very easy, which is no problem since soil water content on the distribution area of Kerguelen cabbage is permanently high. This implies that successfully growing this species elsewhere is difficult. [7] [8]

Uses

The plant is edible, containing high levels of potassium. Its leaves contain a vitamin C-rich oil, a fact which, in the days of sailing ships, made it very attractive to sailors suffering from scurvy, [8] hence the species name's epithet antiscorbutica, which means "against scurvy" in Low Latin. It was essential to the diets of the whalers on Kerguelen when pork, beef, or seal meat was used up. In May 1840, botanist Joseph Dalton Hooker was the first to make a technical analysis of the plant, and to assign the Latin name. [9]

Hooker also reported having eaten some soup that had been made with Kerguelen cabbage, and described the raw leaves as tasting like cress, the boiled leaves as tasting like "stale" cabbage, and the root as tasting like horseradish. [10] [8]

Conservation

The micropezid fly species Calycopteryx mosleyi is associated with this plant. Rabbits which were introduced on the Kerguelen around 1874, feed on the cabbage, and the plant is now limited to locations that cannot be accessed by them. Fortunately, rabbits are not present on all islands. [1]

Related Research Articles

<span class="mw-page-title-main">Brassicaceae</span> Family of flowering plants

Brassicaceae or Cruciferae is a medium-sized and economically important family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Most are herbaceous plants, while some are shrubs. The leaves are simple, lack stipules, and appear alternately on stems or in rosettes. The inflorescences are terminal and lack bracts. The flowers have four free sepals, four free alternating petals, two shorter free stamens and four longer free stamens. The fruit has seeds in rows, divided by a thin wall.

<span class="mw-page-title-main">Cabbage</span> Leafy vegetable in the flowering plant family Brassicaceae

Cabbage, comprising several cultivars of Brassica oleracea, is a leafy green, red (purple), or white biennial plant grown as an annual vegetable crop for its dense-leaved heads. It is descended from the wild cabbage, and belongs to the "cole crops" or brassicas, meaning it is closely related to broccoli and cauliflower ; Brussels sprouts ; and Savoy cabbage.

<i>Erysimum</i> Genus of flowering plants

Erysimum, or wallflower, is a genus of flowering plants in the cabbage family, Brassicaceae. It includes more than 150 species, both popular garden plants and many wild forms. The genus Cheiranthus is sometimes included here in whole or in part. Erysimum has since the early 21st century been ascribed to a monogeneric cruciferous tribe, Erysimeae, characterised by sessile, stellate (star-shaped) and/or malpighiaceous (two-sided) trichomes, yellow to orange flowers and multiseeded siliques.

<i>Brassica</i> Genus of flowering plants in the cabbage family Brassicaceae

Brassica is a genus of plants in the cabbage and mustard family (Brassicaceae). The members of the genus are informally known as cruciferous vegetables, cabbages, or mustard plants. Crops from this genus are sometimes called cole crops—derived from the Latin caulis, denoting the stem or stalk of a plant.

<i>Brassica oleracea</i> Species of plant

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<i>Raphanus raphanistrum</i> Species of flowering plant

Raphanus raphanistrum, also known as wild radish, white charlock or jointed charlock, is a flowering plant in the family Brassicaceae. One of its subspecies, Raphanus raphanistrum subsp. sativus, includes a diverse variety of cultivated radishes. The species is native to western Asia, Europe and parts of Northern Africa. It has been introduced into most parts of the world and is regarded as a habitat threatening invasive species in many areas, for example, Australia. It spreads rapidly and is often found growing on roadsides or in other places where the ground has been disturbed.

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<span class="mw-page-title-main">Micropezidae</span> Family of flies

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<span class="mw-page-title-main">Southern Indian Ocean Islands tundra</span> Ecoregion of several subantarctic islands in the southern Indian Ocean

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<i>Lepidium oleraceum</i> Species of flowering plant

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Azorella polaris, commonly known as the Macquarie Island cabbage, is a species of flowering plant usually placed in the family Araliaceae and only very distantly related to cabbage. It is a megaherb, growing up to about a metre in height, native to the subantarctic islands of New Zealand and to Australia’s Macquarie Island.

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Lyallia kerguelensis, commonly called the lyallia cushion, is a species of flowering cushion plant in the monotypic genus Lyallia of the family Montiaceae. It is sometimes placed in the Hectorellaceae or the Portulacaceae. The generic name honours British botanist and naval officer David Lyall who served as assistant surgeon on HMS Terror on the Antarctic exploring expedition led by James Clark Ross from 1839 to 1843. Lyall was a friend and colleague of describer Joseph Dalton Hooker on the expedition when the type material was collected. The specific epithet refers to the type locality.

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References

  1. 1 2 Thieret, J.W.; Young, S.B. (1988). "The Kerguelen-Cabbage, Pringlea antiscorbutica (Brassicaceae)". Economic Botany. 42 (2): 288–291. JSTOR   4255079.
  2. 1 2 Schermann-Legionnet, Agnes; Hennion, Françoise; Vernon, Philippe & Atlan, Anne (2007). "Breeding system of the subantarctic plant species Pringlea antiscorbutica R.Br. and search for potential insect pollinators in the Kerguelen Islands" (PDF). Polar Biology. 30 (9): 1183–1193. doi:10.1007/s00300-007-0275-1. S2CID   34228554 . Retrieved 2015-10-15.
  3. Bartish, I.V.; Ainoushe, A.; Jia, D.; Bergstrom, D.; Chown, S.L.; Winkworth, R.C. & Hennion, F. (2012). "Phylogeny and colonization history of Pringlea antiscorbutica (Brassicaceae), an emblematic endemic from the South Indian Ocean Province". Molecular Phylogenetics and Evolution . 65 (2): 748–756. doi:10.1016/j.ympev.2012.07.023. PMID   22871399.
  4. Chapuis, J.-L.; Hennion, F.; Le Roux, V. & Le Cruziat, J. (2000). "Growth and reproduction of the endemic cruciferous species Pringlea antiscorbutica in Kerguelen Islands". Polar Biology . 23 (3): 196–204. doi:10.1007/s003000050027. S2CID   7829119.
  5. Hummel, Irène; Couée, Ivan; El Amrani, Abdelhak; Martin‐Tanguy, Josette & Hennion, Françoise (2002). "Involvement of polyamines in root development at low temperature in the subantarctic cruciferous species Pringlea antiscorbutica". Journal of Experimental Botany. 53 (373): 1463–1473. doi: 10.1093/jxb/53.373.1463 . PMID   12021294.
  6. Hummel, Irène; Quemmerais, Frédéric; Gouesbet, Gwenola; El Amrani, Abdelhak; Frenot, Yves; Hennion, Françoise & Couée, Ivan (2004). "Characterization of environmental stress responses during early development of Pringlea antiscorbutica in the field at Kerguelen". New Phytologist. 162 (3): 705–715. doi: 10.1111/j.1469-8137.2004.01062.x . JSTOR   1514567. PMID   33873770.
  7. Dorne, A.J.; Bligny, R. (1993). "Physiological adaptation to subantarctic climate by the Kerguelen cabbage, Pringlea antiscorbutica R. Br". Polar Biology. 13: 55–60. doi:10.1007/BF00236583. S2CID   42392268.
  8. 1 2 3 Hartley, Karri Horton; Guy, Paul; Lord, Janice (2024). "A tale of two species: Pringlea antiscorbutica and Azorella polaris , sub-Antarctic scurvy remedies". Polar Record. 60. doi:10.1017/S0032247424000019.
  9. Hooker, J.D. (1845). "Table XC-XCI". The botany of the Antarctic voyage of H.M. discovery ships Erebus and Terror in the Years 1839–1843: Under the command of Captain Sir James Clark Ross. Vol. 1. p. 239 via BioDiversityLibrary.org.
  10. Short, Philip (2004). In Pursuit of Plants. Timber Press. pp. 297–299.