1) Family marattiaceae 2) Fern family 
Class Marattiopsida is a group of ferns containing a single order, Marattiales, and family, Marattiaceae. Class Marattiopsida diverged from other ferns very early in their evolutionary history and are quite different from many plants familiar to people in temperate zones. Many of them have massive, fleshy rootstocks and the largest known fronds of...
the giant fern family, the only family of the fern order Marattiales. The family contains four genera and some 150 modern species of large tropical ... [1 related articles]
[n] - constituting the order Marattiales: chiefly tropical eusporangiate ferns with gigantic fronds
family Marattiaceae noun constituting the order Marattiales: chiefly tropical eusporangiate ferns with gigantic fronds