Sagittaria (" arrowhead", Alismataceae) is a cosmopolitan monocotyledonous genus of
aquatic herbs. Five species occur in California, where Sagittaria montevidensis ssp. calycina …

Sex expression in Sagittaria guyanensis HBK subsp. lappula (D. Don) Bojin is typically
andromonoecious while the other species in the same genus are basically monoecious. The …

Staminate flowers of andromonoecious species are thought to be produced to increase
reproductive success through enhancing male function or diverting resources from …

Sagittaria montevidensis is a common marsh species with showy flowers and of interest to
humans; however, its sexual reproduction is mostly unknown. The floral biology, pollination …

The pollination mechanism and mating system of Sagittaria pygmaea were studied
synthetically. In natural or experimental populations, interfloral pollination by insects was …

I investigated the population genetics of Sagittaria isoetiformis and S. teres, and the
pollination ecology of S. isoetiformis. In Chapter One, I explored the population genetic …

Osyris alba L. is a widespread dioecious hemiparasitic shrub of S Europe, N Africa, and SW
Asia. Male inflorescences are multiflowered whereas each female inflorescence is reduced …

Flowering pattern, flowering phenology, and mating system of the closely-related, interfertile
species Penstemon tenuiflorus and P. hirsutus are the same. Flowers are protandrous, but …

Floral development from initiation of primordia through anthesis was studied for three closely
related species of Agalinis. Objectives were to determine the developmental basis for the …

In protogynous plants, female flowers of early blooming plants are at a reproductive
disadvantage because they cannot set fruit due to the lack of available pollen. To study this …