J.A. Zettler, T.P. Spira og C.R. Allen (2001). «Yellow jackets (Vespula spp.) disperse Trillium (spp.) seeds in Eastern North America». The American Midland Naturalist. 146 (2): 444–446. ISSN0003-0031. doi:10.1674/0003-0031(2001)146[0444:YJVSDT]2.0.CO;2.
J.A. Lampley m.fl. (2022). «A revised subgeneric classification of Trillium (Parideae, Melanthiaceae)». Phytotaxa. 552 (5). ISSN1179-3163. doi:10.11646/phytotaxa.552.5.1.
efloras.org
«Trillium». Flora of North America. Besøkt 29. april 2024.
J.A. Zettler, T.P. Spira og C.R. Allen (2001). «Yellow jackets (Vespula spp.) disperse Trillium (spp.) seeds in Eastern North America». The American Midland Naturalist. 146 (2): 444–446. ISSN0003-0031. doi:10.1674/0003-0031(2001)146[0444:YJVSDT]2.0.CO;2.
J.A. Lampley m.fl. (2022). «A revised subgeneric classification of Trillium (Parideae, Melanthiaceae)». Phytotaxa. 552 (5). ISSN1179-3163. doi:10.11646/phytotaxa.552.5.1.