hornwort

Meanings

1. A bryophyte, of phylum Anthocerotophyta, with a leafless thallus characterized by a dominant gametophyte stage of the life cycle and a sporophyte stage shaped like a horn.
2. An aquatic flowering plant in the genus Ceratophyllum
3. Vernal grasses (Anthoxanthum spp.).

Etymology

From horn + wort (“plant”), from the fact that the spores are produced in slender horn-shaped structures.