Wolffiella hyalina (Delile) Monod

Fronds 1-3 nun long, 0.8-2.0 mm wide, ovate to trapezoid, with some one-celled teeth along the margin or without; air spaces distinct, spread throughout 1/2-4/5 of the distance between the node and the tip, up to 7 cell layers thick at the base; angle of the pouch 90 -120 ; appendage 0.5-5.0 mm long, 0.6-1.8 mm wide, 3/4-5 times as long as wide, 1/2-4 times as long as the frond, 1/2-4/5 as wide as the frond. INFLORESCENCE: Plants often flowering and fruiting. INFRUCTESCENCE: Seeds 0.35-0.40 mm long, 0.25-0.3 mm thick.