For Capsicum
Andrews, J. 1995. Peppers: the domesticated Capsicums. U. Tex. Press, Austin.
Barboza et al. In Kadereit, J.W., and V. Bittrich. 2016. The families and genera of flowering plants. XIV. Flowering plants – Eudicots – Aquifoliales, Boraginales, Bruniales, Dipsacales, Escalloniales, Garryales, Paracryphiales, Solanales (except Convolvulaceae), Icacinaceae, Metteniusaceae, Vahliaceae. Springer, Berlin. 412 pp.
Barchenger, D.W., and P.W. Bosland. 2019. Wild chile pepper (Capsicum L.) of North America. Pp. 225--242 in North American Crop Wild Relatives, Volume 2. Springer, Cham.
Bosland, P.W., and E.J. Votava. 2000. Peppers: vegetable and spice Capsicums. Crop Production Science in Horticulture vol. 12. CABI Publishing, Oxon, UK.
D'Arcy, W.G., and E.H. Eshbaugh. 1974. New World peppers [Capsicum - Solanaceae] north of Colombia: a résumé. Baileya 19: 93-105.
De, A.K. 2003. Capsicum: the genus Capsicum. Taylor & Francis, London.
Eshbaugh in FNA (in prep.)
Heiser, C.B., Jr., and B. Pickersgill. 1975. Names for the bird peppers [Capsicum - Solanaceae]. Baileya 19: 151-156.