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. Google Scholar
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. Google Scholar
Keesling, A. 2020. Reevaluating the species status of the Southern Ghost Pipe, Monotropa brittonii. M.S. thesis, Ohio State Univ. Google Scholar
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. Google Scholar
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. Google Scholar
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. Google Scholar
Wallace, G.D. 1975. Studies of the Monotropoideae (Ericaceae): taxonomy and distribution. Wasmann J. of Botany 33: 1-88. Google Scholar
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. Google Scholar