Anthocerotophyta An introduction. http://www.ucmp.berkeley.edu/plants/anthocerotophyta.html

Hornworts A cladogram based on Hasegawa (1994). http://www.is.kochi-u.ac.jp/Bio/mosses/cladogram4.html

Anthocerotophyta The classification of the hornworts along with images of the characteristics of these plants http://www.science.siu.edu/landplants/Anthocerophyta/anthocerophyta.html

Hornworts. Proposed phylogenetic relationships. http://www.science.siu.edu/landplants/Anthocerophyta/hornwort.rels.html

Anthocerotophyta The classification of the hornworts based on Hyvonen & Piippo (1993), with references for taxonomic papers. http://ucjeps.berkeley.edu/bryolab/tree/anthocerotophyta.html

Hornwort A photograph of a hornwort with sporophytes. http://botit.botany.wisc.edu/images/130/Bryophytes/Anthocerophyta/Hornwort_w_sporophytes_DH.html

Sporophyte Foot A microscopic image of a cross-section through the foot of a sporophyte. http://botit.botany.wisc.edu/images/130/Bryophytes/Anthocerophyta/Sporophyte_foot_MC.html

Thallus cells A microscopic image. http://botit.botany.wisc.edu/images/130/Bryophytes/Anthocerophyta/Thallus_400x_MC.html

Stoma A microscopic image. http://botit.botany.wisc.edu/images/130/Bryophytes/Anthocerophyta/Stoma_MC.html

Thallus A photograph of hornwort thallus. http://botit.botany.wisc.edu/images/130/Bryophytes/Anthocerophyta/Thallus_MC.html

Classification of hornworts Four classification systems of the Anthocerotophyta. http://www.wzip.uakron.edu/biology/hornworts/classification.html

Anthocerophyta Gallery of images from the University of Wisconsin Botany Department. http://botit.botany.wisc.edu/images/130/Bryophytes/Anthocerophyta/

Taiwania cryptomerioides Description and images of the sole species of Taiwania, endemic to Taiwan. http://www.botanik.uni-bonn.de/conifers/cu/tai/index.htm