Three-cornered leek

Allium triquetrum
Amaryllis family (Amaryllidaceae)


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Allium triquetrum is a bulbous flowering plant in the genus Allium (onions and garlic) native to the Mediterranean basin. It is known in English as three-cornered leek, and in Australia and New Zealand as onion weed. Both the English name and the specific epithet triquetrum refer to the three-cornered shape of the flower stalks.

Distribution

Allium triquetrum is native to south-western Europe, north-western Africa, Madeira and the Canary Islands, where it grows in meadows, woodland clearings, on river banks and roadside verges from sea level to an elevation of 850 metres (2,790 ft). It has also been introduced to the British Isles, New Zealand, Turkey, Australia, California, Oregon, and South America, and is a declared noxious weed in some of those places.

Description

Allium triquetrum produces stems 17–60 cm (6 3423 12 in) tall, which are concavely triangular in cross-section. Each stem produces an umbel inflorescence of 4–19 flowers in January–May in the species' native environment. The tepals are 10–18 mm (13322332 in) long and white, but with a "strong green line". Each plant has two or three narrow, linear leaves, each up to 15 cm (6 in) long. The leaves have a distinct onion smell when crushed.

Culinary uses

All parts of the plant, from the bulb to the flowers, are edible fresh (for example in pestos) or cooked, with "a subtle flavour like leek or spring onion".

References

External links

  • Media related to Allium triquetrum at Wikimedia Commons
  • Data related to Allium triquetrum at Wikispecies
  • Plants for a Future
  • Victorian Resources Online
  • UC/JEPS: Jepson Manual Interchange
  • Allium triquetrum at Calflora



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Allium triquetrum [L.]