On the Megagametophytes of Two Lepidodendracean Cones
@article{BrackHanes1978OnTM, title={On the Megagametophytes of Two Lepidodendracean Cones}, author={Sheila D. Brack‐Hanes}, journal={Botanical Gazette}, year={1978}, volume={139}, pages={140 - 146} }
Lepidodendracean fructifications with well-preserved megagametophytes are described from Pennsylvanian petrifactions of eastern Kentucky. One cone is megasporangiate with one functional alate spore in each sporangium; the other cone is bisporangiate with spinose megaspores and papillate microspores. Both strobili have megaspores that contain prothallia with rhizoids and well-developed archegonia. Ontogenetic stages of megagametophytic development in these cones are comparable to stages that…
20 Citations
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