Bryophytes

Mosses and Liverworts

 

 

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The Bryophytes consist of three groups of non-vascular plants; the mosses, the liverworts, and the hornworts. These three groups are terrestrial, but have more in common with the green algae than they do with the vascular plants. They lack vascular elements such as phloem and xylem, and in their alternation of generations the haploid stage (gametophyte) and the diploid stage (the sporophyte) are both large and conspicuous (although the gametophyte tends to be more visible). To find out more about bryophytes and their biology, we suggest you first look at the "Classification of Plants" by Frances Cardillo, the first link given below.

Classification of Plants. Frances Cardillo. This site has informatioon on the general characteristics of the mosses, liverworts, and hornworts and a generalized moss life cycle illustrating the alternation of gametophyte and sporophyte parts of the reproductive process. In addition it has figures and information about each of the orders of the Bryophyta (mosses), Hepaticophyta (liverworts), and Anthocerotophyta (hornworts).

Bryophyte Flora of North America. New York Botanical Garden. A marvelous site for the technically minded in mosses. The site includes a key to the moss genera of North America, a discussion of the classification used in the key, and treatments of some families and genera of both mosses and liverwort. Technical, but recommended.

Natural Perspective - Mosses and Allies. A very nice, non-technical introduction to the mosses, liverworts, and hornworts.

Bryophytes. Southern Illinois University. This site has a classification of the bryophytes with photographs of representative species of the major groups. An introduction to the bryophytes is promised, but not yet available at the time of this review.

Mosses and Liverworts in Wales. Alan Hale. Athough this site deals with the bryophytes of Wales, it offers an outstanding general introduction to the mosses and liverworts.

The Division Bryophyta. This page has a nice illustration of a typical bryophyte life cycle.

Bryophyte Names List. Missouri Botanical Garden. Downloadable zipped files containing the family, genus, and species group names of the bryophytes of the Western Hemisphere including North America. The files are large.

New York Botanial Garden Catalog of North American Bryophytes. A specimen level catalog of the bryophytes in the New York Botanical Garden collection. Technical.

Sphagnum: Peat Moss for Beginners and Experts. Eva Maria Temsch. Sphagnum is the group of mosses you usually associate with peat and bogs in the northern regions of the world. This wonderful site will tell you just about anything you want to know about Sphagnum including its morphology, life cycle, gneetics, classification. You'll also find information about peat bogs and links to other moss sites on the web.

A List of the Bryophytes of Kentucky with County Distributions. J. Snyder. A checklist of the bryophytes of Kentucky with distributional data by county.

Checklist of the Mosses of North Carolina. L. Anderson and J. Shaw. A checklist of the mosses of North Carolina.

Checklist of Wisconsin Bryophytes. Milwaukee Public Museum. A checklist of the mosses and liverworts of Wisconsin.

Centex Naturalist. Jerry Evans. Photographs of liverworts and mosses from Texas.

 

 

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