Otoglossum

Otoglossum
	Otoglossum harlingii
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Asparagales
Family:	Orchidaceae
Subfamily:	Epidendroideae
Tribe:	Cymbidieae
Subtribe:	Oncidiinae
Genus:	Otoglossum; (Schltr.) Garay & Dunst.
Type species
	Otoglossum hoppii;
Synonyms
	Brevilongium Christenson; Ecuadorella Dodson & G.A.Romero;

Otoglossum is a genus of flowering plants from the orchid family, Orchidaceae, native to South America and Central America.^[1]^[2]^[3]^[4]

Description

They are plants of ovoid pseudobulbs spaced in long, along a creeping or ascending upward rhizomes, with thick and tanned leathery leaves. The inflorescence is axillary, racemosa, erect, starting from the sheaths of the pseudobulbs, racemous, erect, with many rather large and wavy or curly, rounded flowers.

The petals and sepals have similar shapes and sizes, with very frizzy, oval, large margins, somewhat concave. The lip is inserted at the base of the column. The spine is short, sometimes with dorsal calluses. The spine is short, apodes, sometimes with dorsal calluses before the stigmatic cavity, small wings or auricles, and terminal anther somewhat inserted under the terminal margins of the spine.

Taxonomy

In 2001 Mark W. Chase and Norris Williams subordinated the Oncidium section Serpentia to Otoglossum. The species in this section, Oncidium serpens, Oncidium sanctipauli, Oncidium harlingii and Oncidium globuliferum, have few and widely spaced flowers at first glance, very similar to those of Oncidium varicosum, long repeating rhizomes like those of Rodriguezia, show frequent sprouting of new plants in the nodules of ancient floral stems, and morphologically have little in common with Otoglossum other than the scandal habit.

Species

Section	Name	Distribution	Elevation (m)
section Otoglossum	Otoglossum arminii (Rchb.f.) Garay & Dunst.	Colombia, Venezuela, Brazil	1800 - 2700
	Otoglossum axinopterum (Rchb.f.) Garay & Dunst.	Ecuador	500 - 2500
	Otoglossum brachypterum (Rchb.f.) Garay & Dunst.	Peru
	Otoglossum candelabrum (Linden ex Pérot) Jenny & Garay	Colombia, Ecuador	1500 - 1600
	Otoglossum chiriquense (Rchb.f.) Garay & Dunst.	Costa Rica, Panama	800 - 3000
	Otoglossum dayanum (Rchb.f.) Jenny & Garay	Peru
	Otoglossum hoppii (Schltr.) Garay & Dunst.	Colombia
	Otoglossum virolinense P.Ortiz & Jenny	Colombia	2400
	Otoglossum weberbauerianum (Kraenzl.) Garay & Dunst.	Peru	2000 - 2300
section Brevilongium	Otoglossum brevifolium (Lindl.) Garay & Dunst.	Colombia, Venezuela, Brazil, Ecuador, Peru, Bolivia	900 - 2800
	Otoglossum harlingii (Stacy) N.H.Williams & M.W.Chase	Ecuador	1800 - 3100
	Otoglossum globuliferum (Kunth) N.H.Williams & M.W.Chase	Costa Rica, Panama, Colombia, Venezuela, Brazil, Ecuador, Peru	400 - 2400
	Otoglossum palaciosii (Dodson) M.W.Chase & N.H.Williams	Ecuador	1650
	Otoglossum sancti-pauli (Kraenzl.) N.H.Williams & M.W.Chase	Colombia, Venezuela	1100 - 1300
	Otoglossum scansor (Rchb.f.) Carnevali & I.Ramírez in J.A.Steyermark & al.	Colombia, Venezuela, Brazil	750 - 1950
	Otoglossum serpens (Lindl.) N.H.Williams & M.W.Chase	Colombia, Ecuador, Peru	1500 - 2700

Distribution

Otoglossum, according to its new definition already expanded to include the aforementioned section of Oncidium, then groups about thirteen epiphytic species, occasionally terrestrial, in rule of scandal growth, that inhabit humid, fresh and cold mountainous areas from Costa Rica to Peru until the altitude of three thousand meters, over trees or rocky escarpments. Three species registered for Brazil, two belonging to the old section of Odontoglossum and one to Oncidium.

References

^ ^a ^b Kew World Checklist of Selected Plant Families
^ Szlachetko, Dariusz L. & Kolanowska, Marta (2014). "Generic delimitation of the genera Brevilongium and Otoglossum (Orchidaceae) with description of new species from Colombia and Panama". Plant Biosystems. 148 (6): 1148–1159. Bibcode:2014PBios.148.1148S. doi:10.1080/11263504.2014.916363.
^ Pridgeon, A.M., Cribb, P.J., Chase, M.C. & Rasmussen, F.N. (2009). Epidendroideae (Part two). Genera Orchidacearum 5: 1-585. Oxford University Press, New York, Oxford.
^ Jenny, R. (2010). Otoglossum, una revisión taxonómica. Orquideología 27: 63-95.

External links

Media related to Otoglossum at Wikimedia Commons
Data related to Otoglossum at Wikispecies

[WCSP-1] Kew World Checklist of Selected Plant Families

[2] Szlachetko, Dariusz L. & Kolanowska, Marta (2014). "Generic delimitation of the genera Brevilongium and Otoglossum (Orchidaceae) with description of new species from Colombia and Panama". Plant Biosystems. 148 (6): 1148–1159. Bibcode:2014PBios.148.1148S. doi:10.1080/11263504.2014.916363.

[3] Pridgeon, A.M., Cribb, P.J., Chase, M.C. & Rasmussen, F.N. (2009). Epidendroideae (Part two). Genera Orchidacearum 5: 1-585. Oxford University Press, New York, Oxford.

[4] Jenny, R. (2010). Otoglossum, una revisión taxonómica. Orquideología 27: 63-95.

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