Marsilea minuta 

Terrestrial or aquatic herbs with long creeping rhizome, 1-1.5 mm thick. Fronds 8-10 x 1-2 cm, simple; stipe 6-8 cm long, slender, glabrous or softly pubescent; lamina quadrifid; each lobe 0.8-1 x 0.6-1 cm, obovate or obtriangular, lobed to serrate along the outer margins. Sporocarps 3 x 2.5 mm, oblongoid, hispid when young, less hairy at maturity, with 4-5 mm long stalk, produced in clusters.