{i} membrane or outer layer; membranous moisture absorbing layer on the aerial roots of some epiphytic plants (non-parasitic plants that grow on the surface of other things, such as rocks)
velamen radicum (schwammige hülle um luftwurzeln)
الواصلة
ve·la·men ra·di·cum (schwam·mi·ge hül·le um luft·wur·zeln·)