Taxon	Illustrator ⠉
	Brassia caudata Ionopsis utricularioides Macradenia lutescens Oncidium ensatum Trichocentrum undulatum Tolumnia bahamensis	Barbara Alongi Barbara Alongi Barbara Alongi Barbara Alongi Barbara Alongi Barbara Alongi

Herbs, epiphytic or terrestrial, ± cespitose. Stems pseudobulbs, green, ovoid. Leaves persistent, 1–3, not recurved; blade conduplicate, linearlanceolate, dorsiventrally flattened, margins entire. Inflorescences paniculate racemes, lateral branches to 10 [–42] cm; bracts narrowly triangular. Flowers resupinate; sepals and petals distinct and free, oblongelliptic, 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.

Selected References

None.

Lower Taxa

Oncidium ensatum