• Source: Cochlearia

Cochlearia (scurvy-grass or spoonwort) is a genus of about 30 species of annual and perennial herbs in the family Brassicaceae. They are widely distributed in temperate and arctic areas of the northern hemisphere, most commonly found in coastal regions, on cliff-tops and salt marshes where their high tolerance of salt enables them to avoid competition from larger, but less salt-tolerant plants; they also occur in alpine habitats in mountains and tundra.
They form low, rounded or creeping plants, typically 5–20 cm tall. The leaves are smoothly rounded, roughly spoon-shaped (the scientific name Cochlearia derives from the Latinized form, cocleare, of the Greek κοχλιάριον, kokhliárion, a spoon; this a diminutive of κόχλος, kókhlos, seashell), or in some species, lobed; typically 1–5 cm long, and with a fleshy texture. The flowers are white with four petals and are borne in short racemes.




Selected species


About 30 species are usually accepted; several others usually treated as subspecies of C. officinalis are accepted as distinct species by some botanists.

Cochlearia acutangula
Cochlearia aestuaria – Estuarine scurvy-grass
Cochlearia alatipes
Cochlearia anglica – English scurvy-grass
Cochlearia aragonensis
Cochlearia changhuaensis
Cochlearia cyclocarpa – Roundfruit scurvy-grass
Cochlearia danica – Early or Danish scurvy-grass
Cochlearia fenestrata – Arctic scurvy-grass
Cochlearia formosana
Cochlearia excelsa
Cochlearia fumarioides
Cochlearia furcatopilosa
Cochlearia glastifolia
Cochlearia groenlandica – Greenland scurvy-grass
Cochlearia henryi
Cochlearia hui
Cochlearia lichuanensis
Cochlearia longistyla
Cochlearia megalosperma
Cochlearia microcarpa
Cochlearia oblongifolia – East Asian scurvy-grass
Cochlearia officinalis – Common scurvy-grass (including C. excelsa, C. pyrenaica, C. scotica)
Cochlearia paradoxa
Cochlearia rivulorum
Cochlearia rupicola
Cochlearia sessilifolia – Sessile-leaved or Alaskan scurvy-grass
Cochlearia sinuata
Cochlearia tatrae
Cochlearia tridactylites – Three-fingered scurvy-grass
Cochlearia warburgii
Two species formerly included in the genus Cochlearia are now usually treated in separate genera:

Horseradish Armoracia rusticana (previously Cochlearia armoracia)
Wasabi Wasabia japonica (previously Cochlearia wasabi)
Cook's scurvy grass, Lepidium oleraceum, was used by James Cook to prevent scurvy, but is now almost extinct.




History and uses


Scurvy-grass is edible raw and cooked, with a flavour similar to cress. The leaves are rich in vitamin C, which cures scurvy, a deficiency disease resulting from a lack of fresh vegetables in the diet.
The plant was frequently eaten in the past by sailors suffering from scurvy after returning from long voyages.
The first-century writer Pliny the Elder (A.D. 23–79) writes in his Naturalis Historia (Natural History) about a disease suffered by Roman soldiers in Germany. Their symptoms resemble those of scurvy, and Pliny recommends a Herba britannica, which has been suggested to be scurvy-grass.
The Rev. George Moore recorded the purchase of "a pint of scurvey-grasse" for 1 s in 1662. He apparently "suffered much" from scurvy, purchasing scurvey-grasse in both bundled and bottled form.
The book Cochlearia curiosa: or the curiosities of scurvygrass was published in English in 1676,
Described as "both a learned and accurate work", it was well received,
and apparently brought scurvy-grass "into great repute" as a remedy.
According to the Royal Society, the book contains "not only a description of the several kinds of this plant, with its several names, place, and time of growth, temperature and general vertues, but also an enumeration of the uses, medicinal vertues and manner of applying each part of this plant."
In 1857, Cochlearia officinalis was described in The Elements of Materia Medica and Therapeutics as "A gentle stimulant, aperient, and diuretic. It has long been esteemed as an antiscorbutic. It has also been used in visceral obstructions. It is occasionally eaten with bread and butter, like the water-cress."
The leaves, which have a strong acrid, bitter, or peppery taste similar to the related horseradish and watercress, are also sometimes used in salads or eaten with bread and butter.
Scurvy-grass sorrel (Oxalis enneaphylla) is an unrelated plant from southern South America and the Falkland Islands that was also used to treat scurvy.




Scurvy-grass and roads


The advent of modern fast roads treated with salt in winter for ice clearance has resulted in the colonisation by scurvy-grass of many inland areas where it formerly did not occur. The scurvy-grass seeds become trapped on car wheels, transported often for a considerable distance, and then washed off, to grow in the salt-rich soil at the side of the road where other plants cannot survive.

















References






External links


Flora Europaea: Cochlearia
Flora of China: Cochlearia species list

Kata Kunci Pencarian:

• Lobak pedas
• Wasabi
• Centella
• Daftar marga anggota Brassicaceae
• Pinguicula alpina
• Cochlearia
• Horseradish
• Cochlearia officinalis
• Boat-billed heron
• Cochlearia groenlandica
• Cochlearia tatrae
• Cochlearia anglica
• Cochlearium
• Rubefacient
• Camelina sativa