References

For Heteranthera

Cook, C.D.K. 1998c. Pontederiaceae. Pp. 395-403. In Kubitzki, K., ed. 1998b. The families and genera of vascular plants. IV. Flowering plants – Monocotyledons – Alismatanae and Commelinanae (except Gramineae). Springer, Berlin. 511 pp. Google Scholar

Horn, C.N. 1998. Noteworthy collections: North Carolina and Virginia. Castanea 63: 495. Google Scholar

Horn, C.N. 2002c. Heteranthera. In Flora of North America Editorial Committee. 2002a. Flora of North America north of Mexico. Volume 26, Magnoliophyta: Liliidae: Liliales and Orchidales. Oxford Univ. Press, New York, NY. 723 pp. Google Scholar

Horn, C.N. 2020. Two new species of Heteranthera (Pontederiaceae) in North America. J. Bot. Res. Inst. Texas 14: 1-8. Google Scholar

Pellegrini, M.O.O., C.N. Horn, and R.F. Almeida. 2018. Total evidence phylogeny of Pontederiaceae (Commelinales) sheds light on the necessity of its recircumscription and synopsis of Pontederia L. PhytoKeys 108: 25-83. Google Scholar