Accepted By:
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Balick, M. J., M. H. Nee & D.E. Atha. 2000. Checklist of the vascular plants of Belize. Mem. New York Bot. Gard. 85: i–ix, 1–246.
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Nash, D. L. 1976. Tribe VII, Anthemideae. En: Nash, D.L. & Williams, L.O. (eds.), Flora of Guatemala - Part XII. Fieldiana, Bot. 24(12): 386–392, 581–584.
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