| 1 | Tree pollen spectra in the stockholm region (sweden), 1973–1980 | Grana | 1981 | 270 |
| 2 | A model to predict the beginning of the pollen season | Grana | 1991 | 236 |
| 3 | Pollen Dispersal in a Mountain Area | Grana | 1980 | 173 |
| 4 | An evaluation of the microscopical counting methods of the tape in hirst-burkard pollen and spore trap | Grana | 1981 | 168 |
| 5 | Pollen production in anemophilous trees | Grana | 1996 | 158 |
| 6 | Atmospheric birch (Betula) pollen in Europe: Trends and fluctuations in annual quantities and the starting dates of the seasons | Grana | 1995 | 157 |
| 7 | Dinophyte chloroplasts and phylogeny - A review | Grana | 1999 | 154 |
| 8 | Sporopollenin: A review of its chemistry, palaeochemistry and geochemistry | Grana | 1978 | 138 |
| 9 | Relationship between airborne fungal spore presence and weather variables: Cladosporium and Alternaria | Grana | 1993 | 130 |
| 10 | Evidence of long-distance transport ofbetulapollen | Grana | 1991 | 124 |
| 11 | The trend to earlier birch pollen seasons in the U.K.: A biotic response to changes in weather conditions? | Grana | 1997 | 114 |
| 12 | Dinoflagellate phylogeny revisited: reconciling morphological and molecular based phylogenies | Grana | 1999 | 112 |
| 13 | Pollen Morphology in the Order Centrospermae | Grana | 1975 | 111 |
| 14 | A Comparative Analysis of Daily Variations in the Gramineae Pollen Counts at Córdoba, Spain and London, UK | Grana | 1995 | 106 |
| 15 | Theoretical daily variation patterns of airborne pollen in the southwest of spain | Grana | 1991 | 98 |
| 16 | Pollen Grains of Nigerian Plants | Grana | 1973 | 95 |
| 17 | Pollen influx values measured in different sedimentary environments and their palaeoecological implications | Grana | 1999 | 95 |
| 18 | The variability in settling velocities of some pollen and spores | Grana | 1995 | 94 |
| 19 | Nature of the sporoderm in monocotyledons, with special reference to the pollen grains ofcannaandheliconia | Grana | 1982 | 92 |
| 20 | An Elucidation of the Microreticulate Structure of the Exine | Grana | 1973 | 91 |
| 21 | On a Possible Function of the Callosic Special Wall inIpomoea Purpurea(L) Roth | Grana | 1970 | 90 |
| 22 | Annual variations in the concentrations ofBetulapollen in the London area, 1961–1990 | Grana | 1993 | 90 |
| 23 | Pollen production in the Poaceae family | Grana | 2003 | 90 |
| 24 | Aerodynamic versus physical size of spores: Measurement and implication for respiratory deposition | Grana | 2001 | 88 |
| 25 | The influence of air temperature on the starting dates of the pollen season ofalnusandpopulus | Grana | 1991 | 87 |
| 26 | Fruits from the mid-cretaceous of north america with pollen grains of theclavatipollenitestype | Grana | 1991 | 85 |
| 27 | Pollen morphology and its effect on pollenl collection by honey bees,Apis MelliferaL. (Hymenoptera: Apidae), with special Reference to Upland Cotton,Gossypium HirsutumL. (Malvaceae) | Grana | 1994 | 85 |
| 28 | A contribution to distinguishing cereal from wild grass pollen grains by LM and SEM | Grana | 1979 | 83 |
| 29 | Can viable pollen carry Scots pine genes over long distances? | Grana | 1995 | 83 |
| 30 | Pollen of Nigerian Plants | Grana | 1995 | 83 |
| 31 | Key for northwest european rosaceae pollen | Grana | 1981 | 82 |
| 32 | Notes on the Pollen Morphology and Phylogeny Restionales and Poales | Grana | 1985 | 80 |
| 33 | Studies of the Development of Wheat (Triticum Aestivum) Pollen | Grana | 1986 | 80 |
| 34 | Pollen Production in Some Anemophilous Angiosperms | Grana | 1986 | 79 |
| 35 | Size distinctions betweenBetulapollen types — A review | Grana | 1996 | 79 |
| 36 | Anacostia, a new basal angiosperm from the Early Cretaceous of North America and Portugal with trichotomocolpate/monocolpate pollen | Grana | 1997 | 79 |
| 37 | The effects of climate change in Switzerland 1969–1996 on airborne pollen quantities from hazel, birch and grass | Grana | 1998 | 79 |
| 38 | The Genus Spiniferites Mantell, 1850 (Dinophyceae) | Grana | 1970 | 78 |
| 39 | Allergenic pollen in europe | Grana | 1991 | 78 |
| 40 | Pollen aperture morphology in Arecaceae: Application within phylogenetic analyses, and a summary of record of palm-like pollen the fossil | Grana | 2001 | 78 |
| 41 | Airborne Pollen Records in Denmark, 1977–1986 | Grana | 1988 | 75 |
| 42 | Pollen Organs and Seeds withEucommiiditesPollen | Grana | 1989 | 75 |
| 43 | Fluctuations and trends in airborne concentrations of some abundant pollen types, monitored at Vienna, Leiden, and Brussels | Grana | 1991 | 75 |
| 44 | CARNOY: A new digital measurement tool for palynology | Grana | 2002 | 74 |
| 45 | Scanning Electron Microscope Studies of Pollen of Cereals and other Grasses | Grana | 1972 | 72 |
| 46 | Influence of Climatic Variation on Pollen Season Severity in Wind-Pollinated Trees and Herbs | Grana | 1980 | 72 |
| 47 | Fossil floral structures of a basal angiosperm with monocolpate, reticulate-acolumellate pollen from the Early Cretaceous of Portugal | Grana | 2000 | 69 |
| 48 | Annual variations in pollen deposition and meteorological conditions on the fell Aakenustunturi in northern Finland: Potential for using fossil pollen as a climate proxy | Grana | 2004 | 69 |
| 49 | Pollen morphology ofOryza(Poaceae) | Grana | 1998 | 65 |
| 50 | Pollen morphological studies in the Malvaceae | Grana | 1986 | 64 |
