HornwortsBrian R. Speer
This tree diagram shows the relationships between several groups of organisms.
The root of the current tree connects the organisms featured in this tree to their containing group and the rest of the Tree of Life. The basal branching point in the tree represents the ancestor of the other groups in the tree. This ancestor diversified over time into several descendent subgroups, which are represented as internal nodes and terminal taxa to the right.
You can click on the root to travel down the Tree of Life all the way to the root of all Life, and you can click on the names of descendent subgroups to travel up the Tree of Life all the way to individual species.
For more information on ToL tree formatting, please see Interpreting the Tree or Classification. To learn more about phylogenetic trees, please visit our Phylogenetic Biology pages.close box
Grolle, R. 1983. Nomina generica Hepaticarum; references, types and synonymies. Acta Bot. Fennica 121:1-62.
Hasegawa, J. 1988. A proposal for a new system of the Anthocerotae, with a revision of the genera. J. Hattori Bot. Lab 64:87-95.
Hassel de Menendez, G. G. 1988. A proposal for a new classification of the genera within the Anthocerotophyta. J. Hattori Bot. Lab 64:71-86.
Hyvonen, J. & Piippo, S. 1993. Cladistic analysis of the hornworts (Anthocerotophyta). J. Hattori Bot. Lab 74:105-119.
Mishler, B. D. & Churchill, S. P. 1985. Transition to a land flora: phylogenetic relationships of the green algae and bryophytes. Cladistics 1:305-328.
Schuster, R. M. 1992. The hepaticae and anthocerotae of North America east of the hundredth meridian, Vol. VI. 937 pp., Field Museum, Chicago.
Information on the Internet
- American Bryological and Lichenological Society
- UCMP Anthocerotophyta exhibit
- Univeristy of Wisconsin hornwort image collection
- Phylum Anthocerophyta: The Hornworts. Land Plants Online, Southern Illinois University at Carbondale.
About This Page
Brian R. Speer
University of California, Berkeley, California, USA
Page copyright © 2000 Brian R. Speer
All Rights Reserved.
- First online 03 June 1996
- Content changed 12 February 1997
Citing this page:
Speer, Brian R. 1997. Anthocerotophyta. Hornworts. Version 12 February 1997 (under construction). http://tolweb.org/Anthocerotophyta/20597/1997.02.12 in The Tree of Life Web Project, http://tolweb.org/