S. Bookman

发表

Effects of pollination timing on fruiting in Asclepias speciosa Torr. (Asclepiadaceae)

S. Bookman, 1983 .

COSTS AND BENEFITS OF FLOWER ABSCISSION AND FRUIT ABORTION IN ASCLEPIAS SPECIOSA

S. Bookman, 1983 .

EVIDENCE FOR SELECTIVE FRUIT PRODUCTION IN ASCLEPIAS

S. Bookman, 1984, Evolution; international journal of organic evolution.

THE FLORAL MORPHOLOGY OF ASCLEPIAS SPECIOSA (ASCLEPIADACEAE) IN RELATION TO POLLINATION AND A CLARIFICATION IN TERMINOLOGY FOR THE GENUS

S. Bookman, 1981 .