ECOLOGICAL AND BIOLOGICAL DIFFERENCES BETWEEN SPRING AND AUTUMN PLANTS OF TWO DESERT EPHEMERALS The ecological and biological characteristics of an endangered plant, Primulina tabacum Hance Ecological and Biological Characteristics of Bauhinia corymbosa Ecological and biological characteristics of Hibiscus tiliaceus, a mangrove associate in China Ecological and Biological Characteristics of Endangered Medicinal Plant Dysosma versipellis