Chaetonemopsis

Chaetonemopsis is a genus of green algae in the family Chaetophoraceae.
Chaetonemopsis consists of uniseriate filaments which are laterally and alternately branched. Cells have long, basally swollen hairs; terminal cells often have two such hairs. Cells are uninucleate with a chloroplast. Sexual reproduction is oogamous, in which the egg is released from the oogonium but remaining attached via a thin, cytoplasmic thread.
The taxonomic status of this genus is unclear. Some taxonomists have suggested that the morphological features of Chaetonemopsis are actually produced by a different genus Bulbochaete parasitized by an amoeba.