[ad. L. clypeolum, dim. of clypeum, clypeus, round shield.] A little shield; ‘term applied to the lamina or receptacle on the inner surface of which the sporangia are attached in Equisetum’ (Syd. Soc. Lex., 1882).
Hence Clypeolar a., ‘formed like a little shield’ (Syd. Soc. Lex., 1882). Clypeolate a., furnished with clypeoles.
