Difference between revisions of "Oncidium"
Kongl. Vetensk. Acad. Nya Handl. 21: 239. 1800.
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|publication year=1800 | |publication year=1800 | ||
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|subfamily=Orchidaceae subfam. Epidendroideae | |subfamily=Orchidaceae subfam. Epidendroideae | ||
|tribe=Orchidaceae tribe Maxillarieae | |tribe=Orchidaceae tribe Maxillarieae |
Revision as of 23:15, 27 May 2020
Herbs, epiphytic or terrestrial, ± cespitose. Stems pseudobulbs, green, ovoid. Leaves persistent, 1–3, not recurved; blade conduplicate, linear-lanceolate, dorsiventrally flattened, margins entire. Inflorescences paniculate racemes, lateral branches to 10[–42] cm; bracts narrowly triangular. Flowers resupinate; sepals and petals distinct and free, oblong-elliptic, obovate to nearly quadrangular or nearly circular, apex retuse to obtuse, sometimes apiculate; lip pandurate, 3-lobed; callus prominent warty-tuberculate-fringed; column with wings, arms, or fingerlike projections; stigmatic cavity ± round; rostellum not prominent. Fruits capsules.
Distribution
Tropical and subtropical, Western Hemisphere.
Discussion
Species 800 (1 in the flora).
Oncidium is a large polymorphic, and probably paraphyletic, assemblage.