For Monotropa
Bidartondo, M.I., and T.D. Bruns. 2001. Extreme specificity in epiparasitic Monotropoideae (Ericaceae): widespread phylogenetic and geographical structure. Molecular Ecology 10: 2285-2295.
Judd, W.S., and K.A. Kron. 1993. Circumscription of Ericaceae (Ericales) as determined by preliminary cladistic analyses based on morphological, anatomical, and embryological features. Brittonia 45: 99-114.
Keesling, A. 2020. Reevaluating the species status of the Southern Ghost Pipe, Monotropa brittonii. M.S. thesis, Ohio State Univ.
Keesling, A.R., M.B. Broe, and J.V. Freudenstein. 2021. Reevaluating the species status of the Southern Ghost Pipe, Monotropa brittonii (Ericaceae). Syst. Bot. 46: 1067-1079.
Kron, K.A., and M.W. Chase. 1993. Systematics of the Ericaceae, Empetraceae, Epacridaceae and related taxa based upon rbcL sequence data. Ann. Mo. Bot. Gard. 80: 735-741.
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.
Wallace, G.D. 1975. Studies of the Monotropoideae (Ericaceae): taxonomy and distribution. Wasmann J. of Botany 33: 1-88.
Wallace, G.D. 2009a. Monotropa. 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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