(1)
Sterrenburg, F. A.; Tiffany, M. A.; Hinz, F.; Herwig, W. E.; Hargraves, P. E.

Seven New Species Expand the Morphological Spectrum of Haslea. A Comparison With Gyrosigma and Pleurosigma (Bacillariophyta)

. Phytotaxa 2015, 207, 143–162.