Ptilonia

Ptilonia (Harvey) J. Agardh, 1863 is a genus of red algae in the family Bonnemaisoniaceae.

Espécies
There are six species:
 * Ptilonia australasica Harvey, 1859
 * Ptilonia magellanica (Montagne) J. Agardh
 * Ptilonia mooreana Levring, 1955
 * Ptilonia okadae Yamada, 1933
 * Ptilonia subulifera J. Agardh, 1890
 * Ptilonia willana Lindauer, 1947