Reference

K. Watanabe, Masato Ito, T. Yahara, V.I. Sullivan, T. Kawahara, D.J. Crawford (1990): Numerical analyses of karyotypic diversity in the genus Eupatorium (Compositae, Eupatorieae) – Österreichische Botanische Zeitschrift = Plant Systematics and Evolution170: 215 - 228.

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