New Species of Fossil Plants, from the Anthracite and Eituminous Coal-field of Pennsylvania

ALETHOPTERIS anthracite appendages arched articulations ASTEROPHYLLITES basin broadly oval Brongt carboniferous CARDIOCARPON CARPOLITHES CAULOPTERIS coal coal-beds coal-fields coal-measures coal-seams cordate crenulate CYCLOPTERIS decurrent deeply marked distinct diverging divisions enlarged entire flexuous fossil Frond bipin furrows GENUS Göpp half open HYMENOPHYLLITES inch broad inch distant inches long inflated LEPIDODENDRON LEPIDOPHYLLUM Lesquereux Lesqx linear linear-lanceolate lobate lower or white medial line deeply medial nerve middle narrowed narrowly striate nate natifid NEGGERATHIA nerve undulate nerves obsolete nerves pinnately nervules dichotomous nervules simple NEUROPTERIS nules oblique oblong obovate OBTUSUM spec PACHYPHYLLUM PECOPTERIS petiole pinnæ lanceolate pinnæ long pinnæ opposite pinnately divided pinnately forking pinnatifid PINNULARIA pinnules alternate pinnules oval rachis ribs scarcely Scars oval secondary nerves secondary pinnæ sessile short sides SIGILLARIA slender smooth margin SPHENOPHYLLUM SPHENOPTERIS Sporange Stem thick Sternb STIGMARIA straight strata striæ terminal leaflet thin transversely tripinnate tubercles undulately striate upper Vascular scars three whole base wrinkled