- n Marattia type genus of the Marattiaceae: ferns having the sporangia fused together in two rows
Century Dictionary and Cyclopedia
- n Marattia A genus of ferns, typical of the order Marattiaceæ. They are coarsehabited plants, having large scalyrhizomes and ample twice-or thrice-pinnate fronds, with oblong pinnules, bearing the sori in lines near the margin. Many fossil ferns showing both fronds and fructification closely resembling those of this genus occur, chiefly in Triassic (Rhetic) strata, and were called Marattiopsis by Schimper, who united with that genus all the forms which had been called Angiopteridium, since found very abundant in the Mesozoic beds of India, and quite recently in the Potomac formation of Virginia.