通光散组 Sect. Tenacissimae Tsiang in Sunyatsenia 3: 214. 1936.花冠近钟状;副花冠裂片角状;花药比合蕊冠为长。 正文 组7. 通光散组 Sect. Tenacissimae Tsiang in Sunyatsenia 3: 214. 1936.花冠近钟状;副花冠裂片角状;花药比合蕊冠为长。下级分类百灵草Marsdenia longipes W. T. Wang ex Tsiang et P. T. Li通光散Marsdenia tenacissima (Roxb.) Wight et Arn.