Symplectoscyphus epizooticus Totton, 1930

Hydrocauli monosiphonic, flexuous, perisarc smooth; stems simple or irregularly branched in several planes, some branched stems forked from an apophysis below a hydrotheca, forking subdichotomous to almost perpendicular. Internodes long and slender, variable in length, widening to base of hydrotheca; nodes indistinct, a transverse or a slightly oblique constriction in perisarc.

Hydrothecae alternate, one distal on internode, facing slightly frontally; abcauline wall smoothly concave, adcauline wall slightly convex, adnate about same length as free wall (to first marginal replication); hydrotheca narrowing a little to margin, a very thin band of tissue passing obliquely downwards from about one third distance along abcauline wall to low on adcauline wall; an elliptical to triangular fenestra in perisarc below floor. Margin tilted upwards, with three blunt cusps, one adcauline and two abcauline; hydrotheca extended by many fine marginal replications.

Gonotheca borne on a very short pedicel from a fenestra below hydrotheca; gonotheca standing free of stem, barrel-shaped, widest in mid-region, with 11-12 concentric ridges, proximal four or five reduced to undulations, distal seven or eight deep with upturned flanges, perisarc very finely vertically striated between flanges. Orifice of gonotheca trumpet-shaped, seated in a dish-shaped depression surrounded by a deep flange.

Colour: Colourless and transparent (Preserved material)