Sex Expression and the Evolutionary Advantages of Male Flowers in an Andromonoecious Species, Sagittaria guyanensis subsp. lappula (Alismataceae) Increased Maleness at Flowering Stage and Femaleness at Fruiting Stage with Size in an Andromonoecious Perennial, Veratrum nigrum An Examination of the Function of Male Flowers in an Andromonoecious Shrub Capparis spinosa Reproductive traits associated with invasiveness in Conyza sumatrensis A Preliminary Study on the Reproductive Features of Veratrum Nigrum L. Along an Altitudinal Gradient Effects of seasonal changes on the growth and reproduction in Ficus racemosa and pollianting fig wasp mutualism system Pollen and Resource Limitation in Veratrum nigrum L. (Liliaceae), an Andromonoecious Herb Floral sex allocation and flowering pattern in the andromonocious Soranthus meyeri (Apiaceae) Gynomonoecy in angiosperms: phylogeny, sex expression and evolutionary significance Adaptive significances of sexual system in andromonoecious Capparis spinosa (Capparaceae) Adaptive advantages of gynomonoecious species Floral sex allocation and gynomonoecy of Ligularia (Asteraceae) in the eastern Qinghai-Tibet Plateau Study on the Breeding System of Aesculus chinensis