"Diagram of a colony of Campanularia, showing four forms of persons. A, portion of a fixed colony; a, hydriform person; b, bud-bearing hydriform person (blastostyle); B, free-swimming colony, being sexless medusiform person (blastoscheme of Allmen), with modified medusiform persons budding from its radiating canals, as sporosacs." — Encyclopedia Britannica, 1893

Campanularia

"Diagram of a colony of Campanularia, showing four forms of persons. A, portion of a fixed colony; a,…