For Triosteum
Ferguson, I.K. 1966a. The genera of Caprifoliaceae in the southeastern United States. J. Arnold Arb. 47: 33-59.
Gould, K.R., and M.J. Donoghue. 2000. Phylogeny and biogeography of Triosteum (Caprifoliaceae). Harvard Papers in Botany 5: 157-166.
Hofmann, U., and V. Bittrich. 2016. Caprifoliaceae. 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.
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