Dendrobium schoeninum

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Common pencil orchid
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Dendrobium schoeninum in the Royal Botanic Gardens, Cranbourne
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Epidendroideae
Tribe: Dendrobieae
Genus: Dendrobium
Species:
D. schoeninum
Binomial name
Dendrobium schoeninum
Synonyms [1]

Dendrobium schoeninum, commonly known as the common pencil orchid, [2] is an epiphytic or sometimes a lithophytic orchid in the family Orchidaceae and has thin wiry, upright or pendent stems with fleshy, grooved, dark green leaves. Its short flowering stems have one or two, rarely up to four pale green, cream-coloured or mauve flowers with purple markings on the labellum. It grows on rainforest margins in coastal New South Wales and southern Queensland.

Contents

Description

Dendrobium schoeninum is an epiphytic or sometimes lithophytic herb that has thin, upright or pendent stems 300–900 mm (10–40 in) long, about 3 mm (0.1 in) wide with many branches. The leaves are cylindrical, fleshy, dark green and groved, 60–160 mm (2–6 in) long and 2–12 mm (0.08–0.5 in) wide. The flowering stems are 10–30 mm (0.4–1 in) long and bear between one or two, rarely up to four pale green, cream-coloured or mauve flowers with purple stripes. The sepals and petals spread apart from each other, the sepals 18–24 mm (0.71–0.94 in) long and about 3.5 mm (0.14 in) wide and the petals a similar length but narrower. The labellum is cream-coloured to pale green with purple markings, about 20–30 mm (0.8–1 in) long and 7–10 mm (0.3–0.4 in) wide with three lobes. The side lobes are narrow and upright and the middle lobe turns downward and has wavy edges and three wavy ridges in the midline. Flowering occurs from August to November. [2] [3]

Taxonomy and naming

Dendrobium schoeninum was first formally described in 1870 by John Lindley and the description was published in The Gardeners' Chronicle and Agricultural Gazette . [4] [5] The specific epithet (schoeninum) is derived from the Latin word schoenus meaning "sedge". [6]

Distribution and habitat

The common pencil orchid grows on the edge of rainforest, near creeks or on the branches of river oak ( Casuarina cunninghamiana ) or swamp she-oak ( C. glauca ). It sometimes also grows on shady rocks and cliff faces. It occurs in near coastal areas between Gladstone in Queensland and the Hunter River in New South Wales. [2] [3]

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<i>Dendrobium cucumerinum</i> Species of orchid

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<i>Dendrobium bowmanii</i> Species of orchid

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<i>Dendrobium toressae</i> Species of orchid

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Dendrobium clementsii, commonly known as the Cape York crimp orchid, is a species of epiphytic or lithophytic orchid that is endemic to tropical North Queensland, Australia. It has long stems, tapering pseudobulbs each with a thin, leathery dark green leaf and clusters of short-lived, cream-coloured flowers with a purple labellum.

<i>Dendrobium malbrownii</i> Species of orchid

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Dendrobium neospectabile, commonly known as the Eungella king orchid, is a species of epiphytic or lithophytic orchid that is endemic to tropical North Queensland. It has cylindrical, yellowish green pseudobulbs, up to three thick, leathery leaves and up to two hundred and fifty crowded cream-coloured to pale yellow flowers with reddish purple streaks on the labellum.

Dendrobium deuteroeburneum, commonly known as the rainforest feather orchid, is a species of epiphytic or lithophytic orchid that is endemic to eastern Australia. Its pseudobulbs are cylindrical, pressed against the host tree or rock and have one or two leathery, dark green leaves and up to seven pale greenish cream-coloured flowers with purple markings on the labellum.

References

  1. 1 2 "Dendrobium schoeninum". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
  2. 1 2 3 Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. p. 392. ISBN   1877069124.
  3. 1 2 Weston, Peter H. "Dendrobium schoeninum". Royal Botanic Garden Sydney. Retrieved 14 November 2018.
  4. "Dendrobium schoeninum". APNI. Retrieved 14 November 2018.
  5. Lindley, John (1870). "New Garden Plants". The Gardeners' Chronicle and Agricultural Gazette: 7. Retrieved 14 November 2018.
  6. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 667.