মূলতঃমূলধন
মূলত্বক্ষা (Assamese)
মূলত্বক্ষা (Assamese)
1. BotanyVelamen or velamen radicum is a spongy, multiple epidermis that covers the roots of some epiphytic or semi-epiphytic plants, such as orchid and Clivia species.
The velamen of an orchid is the white or... from wikipedia.org