Grana

Editorial
pp. 219-219(1)

Pollen morphology and ultrastructure of Marathrum schiedeanum (Podostemaceae)
pp. 221-225(5)
Authors: Osborn J. M.; O'Neill S. P.; El-Ghazaly G.

Fossil floral structures of a basal angiosperm with monocolpate, reticulate-acolumellate pollen from the Early Cretaceous of Portugal
pp. 226-239(14)
Authors: Friis E.M.; Raunsgaard Pedersen K.; Crane P. R.

Temperature requirements of Alnus pollen in Spain and Italy (1994-1998)
pp. 240-245(6)
Authors: Jato M. V.; Frenguelli G.; Rodríguez F. J.; Aira M. J.

Phenological and aeropalynological survey in an olive orchard in Umbria (Central Italy)
pp. 246-251(6)
Authors: Fornaciari M.; Orlandi F.; Romano B.

A statistical approach to comparing the results from different aerobiological stations
pp. 252-258(7)
Authors: Del Mar Trigo M.; Toro F.J.; Recio M.; Cabezudo B.

An aerobiological study in the rural areas of Aragon (Spain) with a high population of pigs
pp. 259-265(7)
Authors: Amigot Lázaro J. A.; Díez-Ticio Ferrer T.; González Cabo J. F.; Lara Gargallo C.; Bárcena Asensio C.; Rodríguez Moure A. A.