Bulbophyllum, one of the largest genera of orchids (family Orchidaceae), composed of more than 2,000 species of flowering plants. The genus is found in warm climates throughout Africa, Asia, and the Americas. Some species are of horticultural interest for their unusual flowers but are considered fairly difficult to grow. Several species are endangered and are threatened by habitat loss.

Bulbophyllum species have creeping rhizomes and rounded pseudobulbs (bulblike stems). Most feature a single leaf per pseudobulb, and the leaves are often succulent and usually are folded along the midrib. The genus displays a wide diversity of growth forms, ranging from small epiphytes to large canelike species. Many of these orchids have small flowers with coloured sepals that are often larger than the petals. Some species are pollinated by flies and give off an offensive odour.

This article was most recently revised and updated by Melissa Petruzzello.
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orchid, (family Orchidaceae), any of nearly 1,000 genera and more than 25,000 species of attractively flowered plants distributed throughout the world, especially in wet tropics. Orchidaceae is a member of Asparagales, an order of monocotyledonous flowering plants that also includes the asparagus and iris families. The word orchid is derived from the Greek word (orchis) for testicle because of the shape of the root tubers in some species of the genus Orchis. These nonwoody perennial plants are generally terrestrial or epiphytic herbs (i.e., growing on other plants rather than rooted in soil). Those attached to other plants often are vinelike and have a spongy root covering called the velamen that absorbs water from the surrounding air. Most species manufacture their own food, but some live on dead organic material (saprotrophic) or are helped to obtain nourishment by a fungus living in their roots.

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