Sirodotia Kylin (1912) is a genus of freshwater red alga in the Batrachospermaceae family, found in temperate and tropical waters.

He was also a zoologist and archaeologist, who taught at schools in Toulouse, Strasbourg, Le Mans, Cahors and Limoges.

[3] Attached, gelatinous gametophytic filaments, up to 17 cm long, with a beaded appearance varying from blue-green to yellow-green.

Uniseriate central axis with large, cylindrical cells; 4–6 pericentral producing repeatedly branched fascicles of limited growth.

[4] The genus Sirodotia has been recognized by the two important reproductive characters such as asymmetrical carpogonium in the gametophyte and indeterminate/indistinct gonimoblast filament in the carposporophyte.