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| |name = Dense mignonette orchid | |name = Dense mignonette orchid | ||
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| |genus = Microtis (plant) | |genus = Microtis (plant) | ||
| |species = media | |species = media | ||
| |species_link = Microtis media | |||
| |subspecies = densiflora | |subspecies = densiflora | ||
| |authority = (]) R.J.Bates | |authority = (]) R.J.Bates | ||
Revision as of 23:21, 26 March 2018
| Dense mignonette orchid | |
|---|---|
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Orchidoideae |
| Tribe: | Diurideae |
| Genus: | Microtis |
| Species: | M. media |
| Subspecies: | M. m. subsp. densiflora |
| Trinomial name | |
| Microtis media subsp. densiflora (Benth.) R.J.Bates | |
| Synonyms | |
| |
Microtis media subsp. densiflora, commonly known as the dense mignonette orchid, is a species of orchid which is endemic to the south–west of Western Australia. It has a single smooth, tubular leaf and a flowering spike with up to one hundred and fifty small yellowish-green flowers. It differs from Microtis media subsp. media in the shape of its flower spike and the shape of its labellum.
Description
Microtis densiflora is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, smooth, tubular leaf 250–600 mm (10–20 in) long and 3–8 mm (0.1–0.3 in) wide. Between twenty and one hundred and fifty small greenish-yellow flowers are crowded along an erect, fleshy flowering stem 200–500 mm (8–20 in) long. Each flower is 5–6 mm (0.20–0.24 in) long and 4–5 mm (0.16–0.20 in) wide. The dorsal sepal is erect and about 3 mm (0.1 in) long, 2 mm (0.08 in) wide. The lateral sepals are about 2 mm (0.08 in) long, 1 mm (0.04 in) wide and curl downwards. The petals are about 2 mm (0.08 in) long, 1 mm (0.04 in) wide and face forwards. The labellum is thin, 2–3.5 mm (0.08–0.1 in) long, 1–1.5 mm (0.04–0.06 in) wide with irregular edges and a small callus. Flowering occurs from October to January.
Taxonomy and naming
The dense mignonette orchid was first formally described in 1873 by George Bentham. He gave it the name Microtis parviflora var. densiflora and published the description in Flora Australiensis, noting that it was "probably a distinct species". In 1989 Mark Clements raised it to species status as Microtis densiflora and in 1990 Robert Bates included it as a subspecies of Microtis media along with subspecies media and quadrata. The last of these has since been raised to species status (M. quadrata) by David Jones and Mark Clements.
The World Checklist of Selected Plant Families accepts the name Microtis densiflora, listing M. media subsp. densiflora as a synonym whereas all Australian authorities retain the name Microtis media subsp. densiflora.
The specific epithet (densiflora) is derived from the Latin words densus meaning "thick" or "close" and florus, meaning "flowered", referring to the densely crowded flowers.
Distribution and habitat
The dense mignonette orchid is found between Perth and Albany where it grows seasonally wet placed.
Conservation
Microtis densiflora is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.
References
- ^ "Microtis densiflora". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
- ^ Brown, Andrew; Dixon, Kingsley; French, Christopher; Brockman, Garry (2013). Field guide to the orchids of Western Australia : the definitive guide to the native orchids of Western Australia. Simon Nevill Publications. p. 288. ISBN 9780980348149.
- ^ Hoffman, Noel; Brown, Andrew (2011). Orchids of South-West Australia (3rd ed.). Gooseberry Hill: Noel Hoffman. p. 340. ISBN 9780646562322.
- ^ Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. p. 223. ISBN 1877069124.
- "Microtis parviflora var. densiflora". APNI. Retrieved 20 February 2018.
- Bentham, George (1876). Flora Australiensis (Volume 6). London: Lovell Reeve & Co. p. 348. Retrieved 20 February 2018.
- "Microtis densiflora". APNI. Retrieved 20 February 2018.
- Bates, Robert J. (1990). "Notes on the genus Microtis (Orchidaceae) in Western Australia with the description of two new taxa" (PDF). Journal of the Adelaide Botanic Garden. 13: 51–54. Retrieved 20 March 2018.
- "Microtis media subsp. densiflora". APNI. Retrieved 20 February 2018.
- ^ "Microtis media subsp. densiflora". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- Backhouse, Gary N.; Bates, Robert J.; Brown, Andrew P.; Copeland, Lachlan M. "A Checklist of the Orchids of Australia Including its Island Territories". Orchids of Australia Ebook. Retrieved 20 March 2018.
- ^ Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press.
External links
Data related to Microtis densiflora at Wikispecies
| Taxon identifiers | |
|---|---|
| Microtis densiflora | |
| Microtis parviflora var. densiflora | |