hornwort

 

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hornwort

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

hornwort (plural hornworts)

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

   Synonym: coontail

3. Vernal grasses (Anthoxanthum spp.).

• prickly hornwort