New insights into the morphology and phylogeny of Heterosigma akashiwo (Raphidophyceae), with the description of Heterosigma minor sp. nov.

1. Engesmo, A.
2. Eikrem, W.
3. Seoane, S.
4. Smith, K.
5. Edvardsen, B.
6. Hofgaard, A.
7. Tomas, C.R.