Marsilea coromandelina Willd.

Stipes slender, filiform, usually glabrous, c. 10-90 mm long. Pinnae narrowly cuneate to obdeltate, glabrous to occasionally sparsely pilose, 2-8 x 1.25-8 mm, with pellucid streaks between veins, flanks usually straight, outer margin round entire, occasionally crenate to bilobed. Pedicels wiry, flexible, straight or gently curved, free 5-15 mm. Sporocarps usually solitary, subcircular to broadly elliptic in lateral view, lemon-shaped in dorsiventral cross-section, conspicuously bordered with bulging sides, appressed pilose at first, becoming glabrous at maturity, 2-3.75 x 1.5-2.5 x 1.75 mm thick; lateral ribs usually prominent; raphe distinct; inferior tooth obtuse, usually downward-pointing; superior tooth broadly conical, obtuse to subacute; sori 8-12.