G Rodondi,
M Beretta, C Andreis - Review of Palaeobotany and …, 2010 - Elsevier
The pollen morphology of Pinguicula alpina, P. arvetii, P. grandiflora subsp. grandiflora, P.
grandiflora subsp. rosea, P. hirtiflora, P. leptoceras, P. poldinii, P. reichenbachiana, and P …