For Lycium
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.
Hitchcock, C.L. 1932. A monographic study of the genus Lycium of the western hemisphere. Ann. Missouri Bot. Gard. 19: 179-374.
Levin & Miller in FNA (in prep.)