ENAlethopteris Marginata
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3 revisions | EricRoscoe at Aug 04, 2022 03:22 PM | |
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Alethopteris MarginataAlethopterus marginata Gopp [Fross] Syst. p 301-Lesq.'x Geol Penn 2 p 865 Pecopteris marginata Brongt. Frond bipinnatifid, pinnae sessile, open, deeply pinnatifid; pinnules contiguous, oblong, slightly obtuse, decurrent, and united together, undulate=sinnate and slightly emarginate; terminal leaflet oblong, lanceolate, obtuse; rachis & medial nerves rough; nervules very slender, perpendicular to the medial nerves, nearly simple. Coal measure | Alethopteris MarginataAlethopterus marginata Gopp [Fross] Syst. p 301-Lesq.'x Geol Penn 2 p 865 Pecopteris marginata Brongt. Frond bipinnatifid, pinnae sessile, open, deeply pinnatifid; pinnules contiguous, oblong, slightly obtuse, decurrent, and united together, undulate=sinnate and slightly emarginate; terminal leaflet oblong, lanceolate, obtuse; rachis & medial nerves rough; nervules very slender, perpendicular to the medial nerves, nearly simple. Coal measure |
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