INVESTIGATIONS OF NORTH AMERICAN CYCADEOIDS: POLLINATION MECHANISMS IN CYCADEOIDEA

THE USE OF RADIOACTIVE ISOTOPES IN DETERMINING SPORE DISTRIBUTION PATTERNS

1951 • 64 citations

NOTES ON THE POLLINATION OF SOME SOUTH AFRICAN CYCADS

1913 • 46 citations

American fossil cycads, by G.R. Wieland.

1906 • 26 citations

INVESTIGATIONS OF NORTH AMERICAN CYCADEOIDS: CONES OF CYCADEOIDEA

1963 • 25 citations

INVESTIGATIONS OF NORTH AMERICAN CYCADEOIDS: EARLY OVULE ONTOGENY

1972 • 25 citations

Self-fertility of a central Oregon source of Ponderosa pine /

1970 • 11 citations

Investigations of North American cycadeoids: Microsporangiate structures and phylogenetic implications

1965 • 9 citations