Polysiphonia filipendula Harvey ex J. Agardh, 1863 [1851–1863]: 920 (lectotype locality: Port Fairy, Victoria, Australia fide Harvey in Kützing, 1864: 13).—Harvey, 1863: xxi.— Sonder, 1880: 35.
Herposiphonia filipendula (Harvey ex J. Agardh) Falkenberg, 1901: 317.—De Toni, 1903: 1058.— Lucas, 1909: 45.— Lucas & Perrin, 1947: 294.
INDIAN OCEAN DISTRIBUTION: Australia.
Note: This species was distributed by Harvey (1857c: no. 193) is his Australian exsiccata under the name Polysiphonia filipendula, without a description.