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Hornwort

From Academic Kids

This is an article about the non-vascular plants. The name Hornwort is also often applied to the aquatic plant Ceratophyllum demersum in the family Ceratophyllaceae
Hornwort

A hornwort thallus close up
Scientific classification
Kingdom:Plantae
Division:Anthocerotophyta
Class:Anthoceropsida
Orders

Anthocerotales
Nothothylales

Hornworts (or horned liverworts) are a group of non-vascular plants comprising the class Anthocerotae. In this classification scheme, there are two orders of hornworts. The common name refers to the elongated capsules (sporangia) that resemble horns.

Hornworts were traditionally considered a class within the Division Bryophyta (bryophytes). However, it now appears that this group is paraphyletic, so they tend to be given their own division, called Anthocerotophyta. There is a single class, called Anthocertopsida.

Hornworts possess a basal meristem and contain just one chloroplast per cell. Unlike other bryophytes, the hornworts have true stomata. The green plant body of a hornwort is the gametophyte plant. The horn-like capsule is the sporophyte, growing from an archegonium embedded deep in the gametophyte thallus.

Families within Class Anthoceratopsida

  • Anthocerotaceae
  • Dendrocerotaceae
  • Notothylaceae

External links

de:Hornmoose eo:Antocerotoj es:Anthocerotopsida fr:AnthocÚrote lt:Ylvaisainiai

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