ădarca, ae, and ădarce, es, f., = ἀδάρκη, ἀδάρκης,
a froth or efflorescence deposited on sedge , etc., forming a spongy growth , also called calamochnus; form adarca , Plin. 32, 10, 52, § 140; id. 16, 36, 66, § 167; 20, 22, 88, § 241: form adarce , Veg. 3, 48, 2; 4, 28, 15; Cael. Aur. Tard. 1, 1.