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2024 has been a banner year for making the best flora we can imagine. We've created:
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References

For Ceratophyllum

Les, D.H. 1985. The taxonomic significance of plumule morphology in Ceratophyllum (Ceratophyllaceae). Systematic Bot. 10: 338-346. Google Scholar

Les, D.H. 1986. The evolution of achene morphology in Ceratophyllum (Ceratophyllaceae), I. Fruit-spine variation and relationships of C. demersum, C. submersum, and C. apiculatum. Systematic Bot. 11: 549-558. Google Scholar

Les, D.H. 1988a. The evolution of achene morphology in Ceratophyllum (Ceratophyllaceae), II. Fruit variation and systematics of the "spiny-margined" group. Systematic Bot. 13: 73-86. Google Scholar

Les, D.H. 1988b. The evolution of achene morphology in Ceratophyllum (Ceratophyllaceae), III. Relationships of the "facially-spined" group. Systematic Bot. 13: 509-518. Google Scholar

Les, D.H. 1988c. The origin and affinities of the Ceratophyllaceae. Taxon 37: 326-345. Google Scholar

Les, D.H. 1989. The evolution of achene morphology in Ceratophyllum (Ceratophyllaceae), IV. Summary of proposed relationships and evolutionary trends. Systematic Bot. 14: 254-262. Google Scholar

Les, D.H. 1997. Ceratophyllaceae. In Flora of North America Editorial Committee. 1997. Flora of North America north of Mexico. Volume 3, Magnoliophyta: Magnoliidae and Hamamelidae. Oxford Univ. Press, New York, NY. 590 pp. Google Scholar

Les. 1993. In Kubitzki, K., J.G. Rohwer, and V. Bittrich, eds. 1993. The families and genera of vascular plants. II. Flowering plants – Dicotyledons – Magnoliid, Hamamelid and Caryophyllid families. Springer, Berlin. 653 pp. Google Scholar

Szalontai, B., others. 2018. Molecular phylogenetic analysis of Ceratophyllum L. taxa: a new perspective. J. Bot. Linn. Soc. Google Scholar

Wilmot-Dear M. 1985. Ceratophyllum revised – a study in fruit and leaf variation. Kew Bulletin 40: 243-271. Google Scholar