Marsilea schelpeana Launert

Stipes usually crowded, rarely solitary, slender, flexible, c. 70-200 mm long. Pinnae narrowly obdeltoid to obdeltoid-obovate, flanks slightly convex, outer margins bilobate, or arching, 2 or 3 (or more), connate at the base, rarely solitary, usually pilose, 8 mm long. Sporocarps obtusely rectangular in lateral view, dorsally somewhat concave, ventrally slightly convex, c. 3-4 x 2-3.25 x 1.5-2 mm thick, rectangular in dorsiventral cross-section (fully mature sporocarps sometimes almost bean-shaped), with continuous shallow dorso-fronto-ventral furrow; lateral ribs hardly visible at maturity; raphe distinct, covering almost entire sporocarp base; inferior tooth absent (or present as very shallow hump); superior tooth present, rather short; sori 6-8.