urceolaria

from The Century Dictionary.

• noun In botany: A small genus of gymnocarpous lichens, having a uniform crustaceous thallus and urceolate apothecia (whence the name). U. scruposa and U. cinerea are used for dyeing.
• noun Same as Urceolina.
• noun [Lamarck, 1801.] In zoology, the typical genus of Urceolariidæ, having the posterior acetabulum provided with an entire internal horny ring. U. mitra is found in fresh water as a parasite of planarian worms.