Anatomy of the Late Devonian Sphenopsid Rotafolia songziensis , with a Discussion of Stelar Architecture of the Sphenophyllales Author(s): De‐Ming Wang, Shou‐Gang Hao, Qi Wang, and Jin‐Zhuang Xue Source: International Journal of Plant Sciences, Vol. 167, No. 2 (March 2006), pp. 373-383 Published by: The University of Chicago Press Stable URL: http://www.jstor.org/stable/10.1086/499115 . Accessed: 02/04/2015 03:18 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact
[email protected]. The University of Chicago Press is collaborating with JSTOR to digitize, preserve and extend access to International Journal of Plant Sciences. http://www.jstor.org This content downloaded from 159.226.100.224 on Thu, 2 Apr 2015 03:18:06 AM All use subject to JSTOR Terms and Conditions Int. J. Plant Sci. 167(2):373–383. 2006. Ó 2006 by The University of Chicago. All rights reserved. 1058-5893/2006/16702-0020$15.00 ANATOMY OF THE LATE DEVONIAN SPHENOPSID ROTAFOLIA SONGZIENSIS, WITH A DISCUSSION OF STELAR ARCHITECTURE OF THE SPHENOPHYLLALES De-Ming Wang,*,y Shou-Gang Hao,1,* Qi Wang,z and Jin-Zhuang Xue* *Key Laboratory of Orogenic Belts and Crustal Evolution, Department of Geology, Peking University, Beijing 100871, China; yInstitute for Earth Sciences, University of Graz, A-8010 Graz, Austria; and zKey Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China A previous study of the Late Devonian (Famennian) sphenopsid Rotafolia songziensis Wang, Hao, and Wang provided detailed descriptions of the morphology and a sketchy illustration of a three-ribbed primary xylem.