. Fossil plants : for students of botany and geology . Paleobotany. Fig. 326. A. Regnellidium diphyllum Lind. Single leaf and stalked sporo- carp. (I nat. size. After Lindman.) B. Cuticle of Sagenopteris rhoifolia. (After Schenk.) of Sagenopteris with members of this family. In Regnellidium the leaves differ from those of Marsilia in bearing two instead of four leaflets, and in the former the veins are repeatedly forked, and do not anastomose as in Marsilia. In the possession of only two leaflets Regnellidium agrees with some forms of Sagenopteris (fig. 328). 1 Solms-Laubaoh (91) A. p. 182. 2

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. Fossil plants : for students of botany and geology . Paleobotany. Fig. 326. A. Regnellidium diphyllum Lind. Single leaf and stalked sporo- carp. (I nat. size. After Lindman.) B. Cuticle of Sagenopteris rhoifolia. (After Schenk.) of Sagenopteris with members of this family. In Regnellidium the leaves differ from those of Marsilia in bearing two instead of four leaflets, and in the former the veins are repeatedly forked, and do not anastomose as in Marsilia. In the possession of only two leaflets Regnellidium agrees with some forms of Sagenopteris (fig. 328). 1 Solms-Laubaoh (91) A. p. 182. 2 I am indebted to my friend Dr Nathorst for calling my attention to Lindman's Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Seward, A. C. (Albert Charles), 1863-1941. Cambridge : University Press

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Keywords: ., bookcentury1800, bookdecade1890, bookpublishercambr, bookyear1898