References

For Cynanchum

Endress, M.E., U. Meve, D.J. Middleton, and S. Liede-Schumann. 2018. Apocynaceae. In Kadereit, J., & V. Bittrich. 2018. The families and genera of flowering plants. XV. Flowering plants. Eudicots. Apiales, Gentianales (except Rubiaceae). Springer, Cham. Google Scholar

Fishbein, M. 2023b. Cynanchum. In Flora of North America Editorial Committee. 2023c. Flora of North America north of Mexico. Volume 14, Magnoliophyta: Gentianaceae to Hydroleaceae. Oxford Univ. Press, New York, NY. 505 pp. Google Scholar

Krings, A. 2001. Neotypification of Enslenia albida and a new combination in Ampelamus for Cynanchum laeve (Apocynaceae). Sida 19: 925-929. Google Scholar

Liede, S. 1997a. Subtribes and genera of the tribe Asclepiadaceae (Apocynaceae, Asclepiadoideae) – a synopsis. Taxon 46: 233-247. Google Scholar

Liede, S. 1997b. American Cynanchum (Asclepiadaceae) – a preliminary infrageneric classification. Novon 7: 172-181. Google Scholar

Liede, S., and A. Täuber. 2002. Circumscription of the genus Cynanchum (Apocynaceae – Asclepiadoideae). Systematic Botany 27: 789-800. Google Scholar

Liede, S., and U. Meve. 1997. Some clarifications, new species, and new combinations in American Cynanchinae (Asclepiadaceae). Novon 7: 38-45. Google Scholar