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. 2017 Feb 16;5:e2964. doi: 10.7717/peerj.2964

Figure 16. Coenosarc of species of Clytiidae Cockerell, 1911 and Obeliidae Maronna et al., 2016.

Figure 16

(A)–(B) Obelia dichotoma (Linnaeus, 1758). (A) Hydrorhiza with glandular cells and exoskeleton, stained with TB; (B) exoskeleton of gonotheca and epidermal glandular cells, stained with HE; (C)–(D) Orthopyxis sargassicola (Nutting, 1915). (C) Hydranth, stained with AB + PAS + H; (D) hydranth, stained with TB. Red line indicates the exoskeleton. Abbreviations: c, coenosarc; em, external material; ep, epidermis; es, exoskeleton; gc, glandular cells; gct, gastrovascular cavity; gt, gastrodermis; gth, gonotheca; ht, hydrotheca; ms, mesoglea; t, tentacle.