Aponogeton ulvaceus, flower spike.
Photo: S.L. Winterton

Aponogeton ulvaceus, sheathing "spathe".
Photo: S.L. Winterton

Aponogeton madagascariensis, spike.
Photo: © H. Barth

Aponogeton madagascariensis, spike.
Photo: S.L. Winterton

Aponogeton sp., spike.
Photo: © H. Wilson

Aponogeton eggersii, spike.
Photo: © R. Stroessner

Aponogeton longiplumulosus, spike.
Photo: © R. Stroessner

Aponogeton vanbruggenii, spike with fruit.
Photo: © D. Wilson

Aponogeton robinsonii, submersed plant.
Photo: © D. Wilson

Aponogeton madagascariensis, plant.
Photo: © H. Barth

Aponogeton distachyos.
Photo: © Nat. Botanical Inst., Rep. South Africa

Aponogeton distachyos, flower spike.
Photo: © S. Jacobs

Aponogeton sp., floating leaves and spike.
Photo: S.L. Winterton

Aponogeton elongatus, flower spikes.
Photo: © S. Jacobs

Aponogeton vanbruggenii, plants.
Photo: © D. Wilson

Aponogeton vanbruggenii, leaf.
Photo: © D. Wilson

Aponogeton proliferus.
Photo: S.L. Winterton

Aponogeton proliferus, plantlets in foreground.
Photo: © C. Niautou

Aponogeton boivinianus, plant.
Photo: © IOPets

Aponogeton capuronii, plant.
Photo: © IOPets

Aponogeton robinsonii, spike.
Photo: © D. Wilson

Aponogeton queenslandicus, floating leaves and flower spikes.
Photo: © S. Jacobs