. Morphology of angiosperms (Morphology of spermatophytes. Part II). Angiosperms; Plant morphology. 200 .MORPHOLOGY OP ANGIOSPERMS gest as wide a range of variation as among Monocotyledons, though not so clearly related to great groups. In Geranium, as has long been known, while the Capsella type is maintained in general, there is no hypophysis, the root- tip being covered by the tissue of a massive suspensor. In Pcperomia pellucida Campbell''" and Johnson1'- have both observed that the first segmentation of the fertilized egg is vertical, followed by a transverse division, and that there
. Morphology of angiosperms (Morphology of spermatophytes. Part II). Angiosperms; Plant morphology. 200 .MORPHOLOGY OP ANGIOSPERMS gest as wide a range of variation as among Monocotyledons, though not so clearly related to great groups. In Geranium, as has long been known, while the Capsella type is maintained in general, there is no hypophysis, the root- tip being covered by the tissue of a massive suspensor. In Pcperomia pellucida Campbell''" and Johnson1'- have both observed that the first segmentation of the fertilized egg is vertical, followed by a transverse division, and that there is no indication of a suspensor. In Loranthus sphaerocarpus Trenb 22 has described the first division of the fertilized egg as vertical, as in Peperomia, but followed by transverse divisions, so that the proembryo resem- bles two filaments lying side by side (Fig. 91). The two basal cells elongate enormously, forming a suspensor as in Gymno- sperms, whose length is increased by the moderate elongation of the second pair of cells, and which becomes more or less tor- tious, the cells twisting about one another. In L. pentandrus (Treub2l!) the elongating suspensor early forces the embryo against the resistant base of the sac, where it become- much flattened out, and for a time bears little resemblance to an em-. 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 Coulter, John Merle, 1851-1928; Chamberlain, Charles Joseph, b. 1863. New York, D. Appleton
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