Asymbiotic Seed Germination and in vitro Seedling Rapid Development of Paphiopedilum spicerianum Reproductive ecology of Bulbophyllum ambrosia (Orchidaceae) Asymbiotic Seed Germination and in vitro Seedling Rapid Development of Paphiopedilum spicerianum Ex situ symbiotic seed germination, isolation and identification of effective symbiotic fungus in Cymbidium mannii (Orchidaceae)