Anthocerotophyta
An introduction.

Classification of hornworts
Four classification systems of the Anthocerotophyta.

Stoma
A microscopic image.

Anthocerotophyta
The classification of the hornworts based on Hyvonen & Piippo (1993), with references for taxonomic papers.

Sporophyte Foot
A microscopic image of a cross-section through the foot of a sporophyte.