hornwort

• Nom désignant soit une plante aquatique du genre Ceratophyllum, formant des masses sous-marines dans les étangs et les ruisseaux lents, soit une espèce de mousse hépatique à capsules fines en forme de corne.

A noun referring to either an aquatic plant of the genus Ceratophyllum that forms submerged masses in ponds and slow-flowing streams, or a type of liverwort with slender hornlike capsules.

1. C1formalscientific

   Any submerged aquatic plant of the genus Ceratophyllum, which forms dense masses in ponds and slow-moving streams.

   Cératophylle

   • Hornwort provides excellent cover for fish in garden ponds.
   • The lake was choked with hornwort near the shore.
   • Aquarists often use hornwort to oxygenate the water.

2. LiverwortC1formalscientific

   A type of bryophyte (non-vascular plant) with slender, horn-like capsules, belonging to the class Anthocerotopsida.

   Anthocérotes

   • Hornworts are often found growing on damp soil or rocks.
   • The hornwort's sporophyte has a distinctive elongated shape.
   • Botanists study hornworts to understand early plant evolution.