1. 1) Huang, T. C. “Flora of Taiwan” Vol. 1, 2nd ed., Editorial Committee of the Flora of Taiwan, Taipei, p. 582 (1994).
2. 2) Chiu, N. Y., and Chang, K. H. “The Illustrated Medicinal Plants of Taiwan” Vol. 4, SMC Publishing Inc., Taipei, p. 28 (1995).