Abstract
A new species of male gymnosperm reproductive organs, Permotheca colovratica sp. nov. from the upper part of the Kungurian Stage (Lower Permian, Irenian Horizon, Koshelevskian Formation) of the Middle Cis-Urals and from the Kazanian Stage of the southern Cis-Urals and Volga River Basin, is described. These organs are rosette-like synangiate aggregations of microsporangia consisting of four sporangia fused at their bases. The adaxial surface of the synangia has a disc of attachment. The in situ pollen grains are of Falcisporites type. The morphologically similar genera Falcisporites Leshik emend. Klaus, Alisporites Daugherty emend. Nilsson, and Vesicaspora Shemel emend. Wilson et Venkatachala are analyzed. The morphogenetic trend in the evolution of the androphores Permotheca is discussed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
