For Gaultheria
Lu, L., P.W. Fritsch, C.M. Bush, H. Wang, K.A. Kron, and D.-Z. Li. 2019. Allopolyploidy in the Wintergreen Group of tribe Gaultherieae (Ericaceae) inferred from low-copy nuclear genes. Nordic J. Bot. 2019: e02077 doi: 10.1111/njb.02077.
Stevens et al. 2004. In Kubitzki, K., ed. 2004. The families and genera of vascular plants. VI. Flowering plants – Dicotyledons – Celastrales, Oxalidales, Rosales, Cornales, Ericales. Springer, Berlin. 489 pp.
Trock, D.K. 2009. Gaultheria. In Flora of North America Editorial Committee. 2009. Flora of North America north of Mexico. Volume 8, Magnoliophyta: Paeoniaceae to Ericaceae. Oxford Univ. Press, New York, NY. 585 pp.
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