Phyllophora traillii is a small marine red alga.
Phyllophora traillii is a small alga no more than 35 mm long. It grows from a small holdfast and a short stipe up to 3 mm long which spreads to a small flat blade which is oblong or with parallel sides. It branches once or twice. The fronds are formed with a compact medulla of large cells with a cortex of small cells in 2 or 3 layers.[1]
Phyllophora traillii is named for George William Traill a Scottish phycologist and mineralogist.[2]
To be found growing on rock in the lower littoral into the sublittoral to a depth of 15 m.[1]
The gametangial plants are dioecious, that is with separate male and female plants.[1]
Recorded from Great Britain, Ireland, Faeroes and the Atlantic coast of Europe from Sweden to France. Also from Canada and U.S.A.[1]