凌霄是紫葳科凌霄属植物,别名紫葳、五爪龙、红花倒水莲、倒挂金钟等。落叶攀援藤本,茎木质,表皮脱落,枯褐色,以气生根攀附于它物之上。叶对生,为奇数羽状复叶顶生疏散的短圆锥花序。花萼钟状,花冠内面鲜红色,外面橙黄色。雄蕊着生于花冠筒近基部,花丝线形,细长。花药黄色,个字形着生。花柱线形,柱头扁平。花期5-8月。 Peak is the Asteraceae Campion genus, alias Aster, five claw dragon, red lotus water lotus, fuchsia and so on. Deciduous vine climbing stems, stems of wood, cuticle off, dry brown, cling to the aerial roots cling to it. Leaves opposite, for the odd number pinnate leaves evacuation of the short panicle. Calyx campanulate, corolla bright red inside, outside orange. Stamens inserted at base of corolla tube, filament linear, slender. Anthers yellow, a glyph with students. Style linear, stigma flat. Flowering from May to August.