Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,916,776,462 visitors served.
forum Join the Word of the Day Mailing List For webmasters
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

Stigmaria
(redirected from stigmarian)

    Also found in: Dictionary/thesaurus 0.01 sec.
stigmaria: see Lepidodendron and Sigillaria Lepidodendron and Sigillaria , two principal genera of an extinct group of primitive vascular trees. They dominated the forests of the early Carboniferous period until the ferns gained ascendancy.
..... Click the link for more information. .
Stigmaria 

the subterranean rootlike part of the trunk of arborescent Lycopodiophyta that existed in the end of the Paleozoic. Stigmariae consisted of thick, dichotomous axes (rhizo- phores) with spirally attached appendixes (roots), which left scars after falling off. Layers with large numbers of stigmariae often formed in the areas of maritime mangrovelike thickets. The presence of stigmariae in geological deposits is an indicator of a frost- less climate.
Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link 		Feedback
Mentioned in?  References in periodicals archive?   Encyclopedia browser?   Full browser?
No references found
 
Realizing that the stigmarian roots were part of the plants that made up the coal seams, Logan communicated his observations to the Geological Society of London in February 1840 and later published them as an abstract in the Proceedings (Logan 1840) and in full in the Transactions (Logan 1842a).
"Such a section as never was put together before": Logan, Dawson, ... by Rygel, Michael C.; Shipley, Brian C. / Atlantic Geology
A further comparison of Isoetes roots and stigmarian appendages.
CAM photosynthesis in submerged aquatic plants by Keeley, Jon E. / The Botanical Review
Forested horizons of calamitacean and lepidodendrid trees standing in their growth position are observed at many levels, with large stigmarian rooting systems.
Atlantic Geoscience Society by Atlantic Geology
 
 
 
Encyclopedia
?

Terms of Use | Privacy policy | Feedback | Advertise with Us | Copyright © 2012 Farlex, Inc.
Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.