The Collaborative International Dictionary of English v.0.48:
Discina \Dis*ci"na\, n. [NL., fr. L. discus disk, Gr. ?.] (Zool.) A genus of Branchiopoda, having a disklike shell, attached by one valve, which is perforated by the peduncle. [1913 Webster]WordNet (r) 3.0 (2006):
discina n 1: any fungus of the genus Discina