Reference

Zabta Khan Shinwari, Hidetoshi Kato, Ryohei Terauchi, Shoichi Kawano (1994): Phylogenetic relationships among genera in the Liliaceae-Asparagoideae-Polygonatae s.l. inferred from rbcL gene sequence data – Österreichische Botanische Zeitschrift = Plant Systematics and Evolution – 192: 263 - 277.