Marsilea aegyptiaca Willd.

Stipes slender, greenish, hairy, becoming glabrous with age. Pinnae extremely variable, with longitudinal brown suberous streaks on lower surface in floating pinnae. Pedicels always free, somewhat stout, curved or straight, c. 3-8 mm long. Sporocarps solitary or more often in dense groups of 2 to many clustered at very base of stipe, 1-2 mm thick, square to rectangular in lateral view, sometimes ventrally curved, dorsally straight or saddle-shaped to a varying degree, oblong in frontal view, lateral sides with shallow or deep, slightly curved ventral groove with frontal furrow usually present and often expanded over dorsal side; raphe present but often indistinct; inferior tooth undeveloped; superior tooth always distinct; sori 4-6.