Rostellum
Videos
The rostellum is a projecting part of the column in Orchidaceae flowers, and separates the male androecium from the female gynoecium, commonly preventing self-fertilisation. In many orchids, such as O
Cutaway drawing of Orchis mascula showing the rostellum projecting forward from the column to form cups which keep the adhesive balls sticky.
In the Catasetum flower an extension of the rostellum forms a narrow feeler or "antenna" projecting forward over the labellum.
Epidendroideae
Videos
Epidendroideae is a subfamily of plants in the orchid family, Orchidaceae. Epidendroideae is larger than all the other orchid subfamilies together, comprising more than 15,000 species in 576 genera. M
