Doryanthes excelsa
| Gymea lily | |
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| Gymea lily in the Royal Botanic Gardens, Sydney | |
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Doryanthaceae |
| Genus: | Doryanthes |
| Species: | D. excelsa |
| Binomial name | |
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Doryanthes excelsa Correa |
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Doryanthes excelsa, commonly known as Gymea lily, is a flowering plant in the family, Doryanthaceae and is endemic to coastal areas of New South Wales near Sydney. It has sword-like leaves more than 1 metre (3 ft) long and when it flowers, sends up a flower spike up to 6 metres (20 ft) high. The apex of the spike bears a large cluster of bright red flowers, each 10 centimetres (4 in) across. Its common name is derived from the name given to the plant by the indigenous Eora people and the Sydney suburbs of Gymea and Gymea Bay are named after the lily.
Gymea lilies have a rosette of large numbers of sword-shaped, strap like leaves 1–2.5 metres (3–8 ft) long and 10 centimetres (4 in) wide. The leaves are bright green, fibrous and glabrous.
In winter the flower spike grows from the centre of the rosette until it is up to 6 metres (20 ft) high, bearing shorter leaves up to 30 centimetres (10 in) long. At the top of the spike, a head of flowers 30 centimetres (10 in) in diameter develops, each flower being bright red, trumpet-shaped and about 10 centimetres (4 in) long. The head is surrounded by reddish-brown bracts, sometimes making it difficult to see the flowers from the ground. Flowering occurs in spring and is followed by oval-shaped reddish-brown capsules, 7–10 centimetres (3–4 in) long. In late summer, the capsule splits open and releases the seeds which are 15–23 millimetres (0.6–0.9 in) long.
Doryanthes excelsa was first formally described in 1802 by the Portuguese polymath, José Correia da Serra from the type specimen collected by George Bass "in mountainous parts of the colony of N.S.W.". The description was published in Transactions of the Linnean Society of London. The genus name (Doryanthes) is derived from the Ancient Greek δόρυ (dóry) meaning a "spear" and ἄνθος (ánthos) meaning "a flower". The specific epithet (excelsa) is a Latin word meaning "high", "lofty" or "distinguished".Doryanthes excelsa and Doryanthes palmeri are the only two members of the family Doryanthaceae.
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