Biology:Dinema
| Dinema | |
|---|---|
| |
| Dinema polybulbon | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Epidendroideae |
| Tribe: | Epidendreae |
| Subtribe: | Laeliinae |
| Genus: | Dinema Lindl. |
| Species: | D. polybulbon
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| Binomial name | |
| Dinema polybulbon (Sw.) Lindl.
| |
| Synonyms[1] | |
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Dinema is a genus of orchids. It is represented by a single currently accepted species, Dinema polybulbon, native to Mexico, Central America, and the Caribbean.[2]
Description
They are epiphytes or lithophytes; with pseudobulbs 10 mm long and 6 mm wide, spaced 1–1.5 cm apart on the creeping rhizome, slightly compressed, yellowish-green, apically bi-foliate. The leaves are 15 mm long and 8 mm wide, obtuse, emarginate, shiny green. The inflorescence is uniflora or rarely with 2 flowers, terminal, the flowers 15 mm in diameter, the sepals and the petals are yellowish-brown, the lip is white to yellowish-white with the yellow nail, the column is white with purple spots; the sepals 9 mm long and 2 mm wide, shortly acuminate; petals 9 mm long and 1.5 mm wide; the simple lip, 9 mm long and 6 mm wide, unguiculate, adnate to the base of the spine, with the disc dilated and with undulated edges, thickened nail 2 mm wide; the column is 5 mm long, with 2 conspicuous extensions at the apex, the anther is terminal, pollinia 4; ovary 15 mm long, pedicellate. The fruits are ellipsoid capsules[3]
Plant
Flower
Plant growth habit
_Lindl.,_Gen._Sp._Orchid._Pl.-_111_(1831)_(32380227466).jpg)
_Lindl.,_Gen._Sp._Orchid._Pl.-_111_(1831)_(32269394302).jpg)
Distribution
It is found in Mexico, Belize, El Salvador, Guatemala, Honduras, Nicaragua, Cuba and Jamaica. Uncommon species in habitat, found in humid mixed forests, at an altitude of 1000–1400 meters; it blooms in November, and bears fruit in August.
Taxonomy
_pl._4067_(1844).jpg)
This species can be recognized by the small size, the relatively large solitary flowers, the simple white to yellowish-white lip, and the cornicle-shaped extensions of the column. It is a monotypic genus.
Dinema polybulbon was described by (Sw.) Lindl. and published in The Genera and Species of Orchidaceous Plants 111. 1831
- Synonyms
- Epidendrum polybulbon Sw., Prodr.: 124 (1788).
- Encyclia polybulbon (Sw.) Dressler, Brittonia 13: 265 (1961).
- Bulbophyllum occidentale Spreng., Syst. Veg. 3: 732 (1826).
- Epidendrum polybulbon var. luteoalbum Miethe, Orchis 8: 33 (1914).
- Epidendrum cubincola Borhidi, Acta Bot. Acad. Sci. Hung. 22: 295 (1976 publ. 1977).
- Dinema cubincola (Borhidi) H.Dietr., Wiss. Z. Friedrich-Schiller-Univ. Jena, Math.-Naturwiss. Reihe 29: 524 (1980)
References
- ↑ Kew World Checklist of Selected Plant Families
- ↑ la Croix, Isobyl (2008). The New Encyclopedia of Orchids: 1500 Species in Cultivation. Portland, Oregon: Timber Press. p. 166. ISBN 978-0881928761.
- ↑ "Dinema polybulbon". Tropicos.org. Missouri Botanical Garden: Flora de Nicaragua. http://www.tropicos.org/Name/40031573?projectid=7.
External links
Wikidata ☰ {{{from}}} entry
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