FIGURE 5 in SEM study of species of Oswaldella Stechow, 1919 (Cnidaria, Hydrozoa, Kirchenpaueriidae), with an annotated checklist of the species of the genus

FIGURE 5. Oswaldella frigida Peña Cantero & Vervoort, 2004. A, hydrocladial branching and disposition of hydrothecae; B, cauline apophysis with axillary nematophore and branched hydrocladium; C, detail of cauline apophysis with axillary nematophore; D–F, unforked hydrocladial internodes (D, F frontal view, E lateral view). Scale bar: 400 µm (A–B), 100 µm (D– F) and 40 µm (C).