prop. n. The type genus of the Marattiaceae, consisting of ferns having the sporangia fused together in two rows. Syn. -- genus Marattia. [ WordNet 1.5 ]
prop. n. The natural family of ferns coextensive with the order Marattiales, consisting of chiefly tropical eusporantiate ferns with gigantic fronds. Syn. -- family Marattiaceae. [ WordNet 1.5 ]