For Linnaea
Christenhusz, M.J.M. 2013. Twins are not alone: a recircumscription of Linnaea (Caprifoliaceae). Phytotaxa 125: 25-32.
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.
Wang, H.-F., S. Landrein, D. Wen-Pan, N. Ze-Long, K. Kondo, T. Funamuto, J. Wen, and S.-L. Zhou. 2015. Molecular phylogeny and biogeographic diversification of Linnaeoideae (Caprifoliaceae s. l.) disjunctly distributed in Eurasia, North America and Mexico. PLoS One 10(3) (Mar 2015): e0116485. DOI:10.1371/journal.pone.0116485
Zika, P.F., and G.C. Tucker. 2017. Variation in Linnaea borealis (Linnaeaceae) across North America and Greenland. J. Bot. Res. Inst. Texas 11: 67-79.
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