Home Central American Mosses
Name Search
Family List
Generic List
Species List
Trematodon Michx. Search in The Plant ListSearch in Index Nominum Genericorum (ING)Search in NYBG Virtual HerbariumSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical GardenSearch in Flora do Brasil 2020Search in Reflora - Virtual HerbariumSearch in Living Collections Decrease font Increase font Restore font

Published In: Flora Boreali-Americana (Michaux) 2: 289. 1803. (Fl. Bor.-Amer.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 3/24/2011)
Acceptance : Accepted
Project data     (Last Modified On 3/24/2011)

Trematodon is best recognized by its long-necked capsules. The genus has

undifferentiated alar cells, an autoicious condition (in Central American species), vertically striate outer peristome surface, and subreniform spores. Collections without sporophytes cannot be distinguished from Dicranella or Ditrichum. Trematodon longicollis capsules are twisted at the neck when dry and on hydration move in circles much like those in Campylopus, where the motion is caused by its cygneous setae.

The Bruchiaceae consists of four genera, Bruchia, Eobruchia, Pringleella, and Trematodon, all of which have capsules with long, well-developed, stomatose necks and large, highly ornamented spores (see Buck 1979a). Trematodon differs from the others in having cucullate rather than mitrate calyptrae. Bruchia is the only cleistocarpous genus in the family.

Bruchia queenslandica Stone and Pringleella pleuridioides Card. occur in Mexico and so may be encountered in Central America.  They differ from Trematodon in having mitrate calyptrae and immersed to emergent capsules.  In addition, B. queenslandica has apiculate capsules, while P. pleuridioides is eperistomate.


Export To PDF Export To Word

Trematodon Michx., Fl. Bor. Amer. 2: 289. 1803.

Plants small, gregarious or loosely tufted; stems erect, simple. Leaves ovate-lanceolate; costa single, strong; alar cells not differentiated. Setae long or short; capsules exserted, long rostrate, with a strongly differentiated, stomatose neck, operculate; peristome present or absent. Calyptrae cucullate. Spores large, highly ornamented.



© 2018 Missouri Botanical Garden - 4344 Shaw Boulevard - Saint Louis, Missouri 63110