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STOMATAL STRUCTURE OF ALETHOPTERIS SULLIVANTII AND NEUROPTERIS SCHEUCHZERI, PENNSYLVANIAN PTERIDOSPERM FOLIAGE
Author(s) -
Reihman M. A.,
Schabilion J. T.
Publication year - 1985
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1985.tb08396.x
Subject(s) - pennsylvanian , biology , guard cell , botany , cuticle (hair) , ciliata , paleontology , protozoa , structural basin
The stomatal apparati of the pteridosperm foliage taxa Alethopteris sullivantii (Lesquereux) Schimper and Neuropteris scheuchzeri (Hoffman) forma decipiens (Lesquereux) Gastaldo were examined from Middle Pennsylvanian coal balls collected from central Iowa. Standard light optics, Nomarski, and SEM were utilized to study cellulose acetate peels and macerated cuticle material. The stomatal apparati of both taxa are actinocytic‐haplocheilic and are similar to those found in various modern cycads and conifers. The previous report by Stidd and Stidd of paracytic‐syndetocheilic stomata in A. sullivantii resulted from misinterpretation of the guard cell's configuration and differentially thickened walls.