Phaeosaccion

Phaeosaccion is a genus of algae with monostromatic tubular to saccate thalli, up to 20 centimetres (7.9 in) long and to 2 centimetres (0.79 in) wide. It is classified in the family Phaeosacciaceae.^[2] It is olive brown and resembles young plants of Scytosiphon.^[2] The sole type in the genus is Phaeosaccion collinsii, a species of marine algae.^[3][4] It was first identified in a publication by W.G. Farlow in the article Notes on New England algae published in Bulletin of the Torrey Botanical Club in 1882.^[5] It was named in honor of Frank Shipley Collins.^[4]: 56 Phaeosacchion collinsii is red listed in Iceland as a vulnerable species (VU).^[6]

Phaeosaccion
Scientific classification
Domain:	Eukaryota
Clade:	Sar
Clade:	Stramenopiles
Division:	Ochrophyta
Class:	Phaeosacciophyceae
Order:	Phaeosacciales
Family:	Phaeosacciaceae
Genus:	Phaeosaccion Farlow, 1882
Type species
Phaeosaccion collinsii Farlow, 1882
Other species
Phaeosaccion multiseriatum Andersen et al., 2020 Phaeosaccion okellyi Andersen et al., 2020 Phaeosaccion westermeieri Peters et al., 2024[1]