“Horticultural Protocols to Aid the Conservation of Melampyrum Sylvaticum, Orobanchaceae (Small Cow-Wheat), an Endangered Hemiparasitic Plant”. Sibbaldia: The International Journal of Botanic Garden Horticulture, no. 10, Oct. 2012, pp. 57-69, https://doi.org/10.24823/Sibbaldia.2012.67.