Platy cerium (platiserium)

[NL., wax: see cere.] A very distinct and remarkable genus of ferns, commonly a ociated with the Acrostic heæ. It has been proposed to place it in a separate section, from its producing its sori in large amorphous patches, not, as in the true Acrostic heæ, universal over the fertile portions. The species are few in number, chiefly Eastern or Australian, and for the most part tropical. Platycerus (pla-tis-e-rus), [NL. (Geoffroy, 1762) (cf. L. platy ceros, the distinctne of the sixth ventral abdominal segment. IMG:content-0380.png:[blocks in formation]