PSEUDOBULB

The pseudobulb is a storage organ derived from the part of a stem between two leaf nodes. It applies to the orchid family (Orchidaceae), specifically certain groups of epiphytic orchids, and may be single or composed of several internodes with evergreen or deciduous leaves along its length. In some species, it is hardly swollen at all and looks like a normal stem with many leaves while at the other extreme, some genera such as Bulbophyllum have single, spherical pseudobulbs with one leaf at the apex of each.
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B: (Biologi) umbi semu
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