Orchidaceae: Orchid family

With >20000 species, the largest and most derived monocot family, which probably evolved from the lilies. The showy zygomorphic flowers are adapted to specific pollinators. Another evolutionary specialization of orchids is the production of numerous tiny, dust-like seeds with no endosperm (storage reserves).

Right: Zygopetalum orchid   
 
Below: Dendrobium orchid aerial roots

Below: Dendrobium orchid