| genus masdevallia | (n) large genus of tropical American mostly epiphytic orchids whose flowers have sepals fused at the base forming a tube; includes orchids sometimes placed in genera Dracula and Dryadella and Scaphosepalum |
| masdevallia | (n) any of numerous orchids of the genus Masdevallia; tufted evergreen often diminutive plants whose flowers in a remarkable range of colors usually resemble a tricorn with sepals fused at the base to form a tube |