Influence of Altitude on Reproductive Traits and Resource Allocation of Species of Ranunculaceae at East Qinghai Tibetan Plateu Individual Size and Resource Allocation in Perennial Gentiana Intra-inflorescence sex expression and allocation in Camptotheca acuminata Production of male flowers does not decrease with plant size in insect-pollinated Sagittaria trifolia, contrary to predictions of size-dependent sex allocation Pollen-Ovule Ratio and Gamete Investment in Pedicularis (Orobanchaceae) Increased Maleness at Flowering Stage and Femaleness at Fruiting Stage with Size in an Andromonoecious Perennial, Veratrum nigrum Variation in Floral Sex Allocation and Reproductive Success in Sequentially Flowering Inflorescence of Corydalis remota var. lineariloba (Fumariaceae) Floral sex allocation and gynomonoecy of Ligularia (Asteraceae) in the eastern Qinghai-Tibet Plateau Position-dependent sex allocation within inflorescence of Aconitum gymnandrum Maxim Sex allocation in hermaphroditic plants Pollination environment and sex allocation in Liriodendron chinense