Cypripedium subtropicum, a New Species Related to Selenipedilum Cypripedium wumengense and Its Allies Genetic Structure and Clonal Diversity of Cypripedium flavum (Orchidaceae) Populations from South-West China Bulbils Exist in Root of Cypripedium flavum Differentiation of Flower Bud of Cypripedium flavum Seed Germination Requirements of Cypripedium flavum in Axenic Culture Vegetative Anatomy of the Rare Plant Cypripedium japonicum Thunb. Physiological and Biochemical Changes During the Seed Development of Cypripedium japonicum Ultrastructure of Pollen and Observation on Pollen Tube Growth in Cypripedium japonicum Floral Characteristics and Breeding Systems of an Endangered Species Cypripedium japonicum Embryo and Integument Development of the Endangered Species Cypripedium macranthos Sw. On Paphiopedilum malipoense sp. nov.—An Intermediate Form Between Paphiopedilum and Cypripedium, with a Discussion on the Origin of the genus Flowering and fruit set dynamics in Cypripedium Characteristics of Seeds and Hybrid Seeds in Three Sympatric Cypripedium Species Structure and annual changing pattern of mycorrhizae of four Cypripedium species New Status for a Chinese Taxon of Cypripedium (Orchidaceae) Correlation between numeric dynamics and reproductive behaviour in Cypripedium lentiginosum On Paphiopedilum malipoense sp. nov.—An Intermediate Form Between Paphiopedilum and Cypripedium, with a Discussion on the Origin of the genus Karyotype Analysis of Cypripedium japonicum Thunb. and Calanthe tsoongiana T. Tang et F. T. Wang A New Species of Cypripedium from Yunnan Studies on chemical constituents of Cypripedium smithii