Genus of tropical American epiphytic orchids having striking axillary racemes of yellow to green spiderlike flowers with long slender sepals and warty lips,spider orchids.

• 热带美洲附生兰花的一个属，有显著腋生总状花序，花像蜘蛛，具黄色或绿色细长花萼和疣状边缘，蜘蛛兰。