Orchids are easily distinguished from other plants, as they share some very evident apomorphies. Among these are: bilateral symmetry (zygomorphism), many resupinate flowers, a nearly always highly modified petal (labellum), fused stamens and carpels, and extremely small seeds.
All orchids are perennial herbs, lack any permanent woody structure, and can grow in monopodial and sympodial patterns.
The world's richest concentration of orchid varieties is found in the tropics, mostly Asia, South America and Central America.
To dedicated the beauty of orchids, Czech Post pleased to launch a set of four stamps which composed in one beautiful miniature sheet.
The species depicted on stamps are Dendrobium peguanum, Stanhopea tigrina, Cattleya aclandiae and Paphiopedilum charlesworthii.
