Reference

Ingrid E. Lock, Lubava D. Ashurkova, Oxana A. Belova, Ilya G. Kvasha, Natalia B. Chashkina, Margarita V. Remizowa, Dmitry D. Sokoloff (2009): A continuum between open and closed inflorescenses? Inflorescence tip variation in Potamogeton (Potamogetonaceae: Alismatales) – Wulfenia – 16: 33 - 50.