gymnocalycium
- n large genus of low-growing globular South American cacti with spiny ribs covered with many tubercles
gymnocarpium
- n oak ferns: in some classification systems included in genus Thelypteris
gymnocarpium dryopteris
- n bright blue-green fern widely distributed especially in damp acid woodlands of temperate northern hemisphere
gymnocarpium robertianum
- n yellow-green fern of rocky areas of northern hemisphere
gymnocladus
- n small genus of deciduous trees of China and United States having paniculate flowers and thick pulpy pods
gymnocladus dioica
- n handsome tree of central and eastern North America having large bipinnate leaves and green-white flowers followed by large woody brown pods whose seeds are used as a coffee substitute
gymnogyps californianus
- n North American condor; chiefly dull black; almost extinct
gymnomycota
- n slime molds; organisms having a noncellular and multinucleate creeping vegetative phase and a propagative spore-producing stage: comprises Myxomycetes and Acrasiomycetes; in some classifications placed in the kingdom Protoctista
gymnopilus
- n a genus of fungus characterized by the orange color of the spore deposit
gymnopilus spectabilis
- n a fungus with a brownish orange fruiting body and a ring near the top of the stalk; the taste is bitter and the flesh contains psilocybin and psilocin
gymnopilus validipes
- n a poisonous fungus with a dry cap and a cortina that does not leave much of a ring on the robust stalk