This is a bibliographic reference for content in the New York Metropolitan Flora Project.

• Hidayati, S. N.; Baskin, J. M.; Baskin, C. C. 2000 . Morphophysiological dormancy in seeds of two North American and one Eurasian species of Sambucus (Caprifoliaceae) with underdeveloped spatulate embryos. Amer. J. Bot. 87: 1669-1678.