Dendrobium densiflorum

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Dendrobium densiflorum
Dendrobium densiflorum Orchi 104.jpg
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. densiflorum
Binomial name
Dendrobium densiflorum
Synonyms [1]

Dendrobium densiflorum is a species of epiphytic or lithophytic orchid, native to Asia. It has club-shaped stems, three or four leathery leaves and densely flowered, hanging bunches of relatively large pale yellow and golden yellow flowers.

Contents

Description

Dendrobium densiflorum is an epiphytic or lithophytic orchid with stems that are club-shaped, swollen at the base, 250–400 mm (10–20 in) long and about 20 mm (0.8 in) wide. There are three or four leathery, oblong to lance-shaped leaves 80–170 mm (3–7 in) long and 26–40 mm (1–2 in) wide near the end of the stem. A large number of flowers are densely packed around a hanging flowering stem 60–160 mm (2–6 in) long. Each flower has a greenish white pedicel and ovary 20–25 mm (0.8–1 in) long. The flowers are 30–40 mm (1–2 in) wide with pale yellow sepals and petals and a golden yellow labellum. The sepals are lance-shaped to egg-shaped, 17–21 mm (0.7–0.8 in) long and 8–12 mm (0.3–0.5 in) wide. The petals are almost round, 15–20 mm (0.6–0.8 in) long and 11–15 mm (0.4–0.6 in) wide with irregular edges on the outer half. The labellum is more or less square to round, 17–22 mm (0.7–0.9 in) long and wide with a partly woolly surface. The edges of the labellum surround the column. [2]

Taxonomy and naming

Dendrobium densiflorum was first formally described in 1830 by John Lindley and the description was published in Nathaniel Wallich's book, Plantae Asiaticae rariores . [1] [3]

Distribution and habitat

Mi hua shi hu grows in the trunks of broadleaved, evergreen trees and on rocks in mountain valleys at elevations between 400 and 1,000 m (1,000 and 3,000 ft). It is found in China, Bhutan, northeastern India, Myanmar, Nepal and Thailand. [2] [4] [5] [6] [7]

Dendrobium guibertii and D. amabile are similar species and sometimes confused with D. densiflorum, leading to uncertainty as to the distribution of this species. [2]

Uses

Chemical compounds useful in medicine, including phenanthrenes have been extracted from this orchid. [8] [9]

Related Research Articles

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

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

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

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

Dendrobium tetragonum, commonly known as the tree spider orchid, is a variable species of epiphytic or lithophytic orchid endemic to eastern Australia. Tree spider orchids are unusual in having pendulous pseudobulbs that are thin and wiry near the base then expand into a fleshy, four-sided upper section before tapering at the tip. There are only a few thin but leathery leaves at the end of the pseudobulbs and up to five flowers on relatively short flowering stems. To allow for the variations in the species there are five subspecies and a variety, some with a unique common name.

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

Dendrobium johannis, commonly known as the chocolate tea tree orchid, is a species of epiphytic or lithophytic orchid native to Australia and New Guinea. It has spindle-shaped pseudobulbs, between five and ten dark green leaves with purplish markings and flowering stems with up to fifteen chocolate brown flowers with a yellow labellum.

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

Dendrobium moorei, commonly known as the drooping cane orchid, is a species of epiphytic or lithophytic orchid in the family Orchidaceae and is endemic to Lord Howe Island. It has cylindrical pseudobulbs, leathery, dark green leaves and between two and fifteen small, white drooping flowers that do not open widely.

Dendrobium macropus, commonly known as the Norfolk Island cane orchid, is a species of epiphytic or lithophytic orchid in the family Orchidaceae and is endemic to Norfolk Island. It has cylindrical pseudobulbs, thin, dark green leaves and between five and ten yellowish green flowers that do not open widely.

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

Dendrobium pugioniforme, commonly known as the dagger orchid is a species of orchid endemic to eastern Australia. It is an epiphytic or lithophytic orchid with pendulous, wiry stems, fleshy, sharply pointed leaves and flowering stems with one or two greenish or yellowish flowers with a white labellum. It grows on trees and rocks, mostly in humid forest.

<i>Dendrobium baileyi</i>

Dendrobium baileyi, commonly known as the blotched gemini orchid, is an epiphytic or lithophytic orchid in the family Orchidaceae and has arching stems and flowering stems with one or two spidery, yellow flowers with dark purple spots emerging from leaf axis. It grows in tropical North Queensland, New Guinea and the Solomon Islands.

<i>Dendrobium schoeninum</i>

Dendrobium schoeninum, commonly known as the common pencil orchid, 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.

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

Dendrobium bifalce, commonly known as the native bee orchid, is an epiphytic or lithophytic orchid in the family Orchidaceae. It has spindle-shaped pseudobulbs with up to four leathery leaves and up to ten pale green or greenish yellow flowers with purplish markings. It grows on trees and boulders in rainforest in tropical North Queensland, Australia and in New Guinea.

<i>Dendrobium pruinosum</i>

Dendrobium pruinosum, commonly known as the honey orchid, is an epiphytic or lithophytic orchid in the family Orchidaceae and has flattened, yellowish stems and pairs of cream coloured, dull yellow or greenish flowers. It grows in tropical North Queensland and New Guinea.

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

Dendrobium mirbelianum, commonly known as the dark-stemmed antler orchid or mangrove orchid, is an epiphytic or lithophytic orchid in the family Orchidaceae. It has cylindrical, dark-coloured pseudobulbs with leathery, dark green leaves and up to twelve pale to dark brown flowers with a yellow labellum with dark red veins. This antler orchid occurs in northern Australia, New Guinea and Indonesia.

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.

Dendrobium epiphyticum, commonly known as the Illawarra rock orchid, is a species of epiphytic or lithophytic orchid that is endemic to New South Wales. It has tapered or cylindrical pseudobulbs, up to five thick, leathery leaves and up to fifty cream-coloured or pale yellow flowers with reddish purple markings on the labellum.

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 3 "Dendrobium densiflorum". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
  2. 1 2 3 "Dendrobium densiflorum". Flora of China. Retrieved 13 November 2018.
  3. Lindley, John; Wallich, Nathaniel (ed.) (1830). Plantae Asiaticae rariores, or, Descriptions and figures of a select number of unpublished East Indian plants (Volume 1). London: Treuttel and Wurtz, Treuttel Jun. and Richter. p. 34. Retrieved 13 November 2018.CS1 maint: extra text: authors list (link)
  4. Huda, M.K., Rahman, M.A. & Wil (2001). Notes on the Orchidaceae of Bangladesh. Bangladesh Journal of Plant Taxonomy 8(2): 9-17.
  5. Rahman, M.O. (2004). Second list of angiospermic taxa of Bangladesh not included in Hooker's 'Flora of British India' and Prain's 'Bengal Plants': series I. Bangladesh Journal of Plant Taxonomy 11: 77-82.
  6. Lucksom, S.Z. (2007). The orchids of Sikkim and North East Himalaya: 1-984. S.Z.Lucksom, India.
  7. Raskoti, B.B. (2009). The Orchids of Nepal: 1-252. Bhakta Bahadur Raskoti and Rita Ale.
  8. Kovács, Adriána; Vasas, Andrea; Hohmann, Judit (March 2008). "Natural phenanthrenes and their biological activity". Phytochemistry. 69 (5): 1084–1110. doi:10.1016/j.phytochem.2007.12.005. PMID   18243254.
  9. "KNApSAcK Metabolite Information - Moscatin,Plicatol B". kanaya.naist.jp. Retrieved 15 November 2018.