. Morphology of angiosperms (Morphology of spermatophytes. Part II). Angiosperms; Plant morphology. Fig. 106.—Embryos in parthenogenetic species of Alchemilla. A< A. sericata, one par- thenogenetic embryo from egg and one from synergic!, the other synergid breaking down ; the two polar nuclei and antipodal cells also shown ; x 284 ; B, A. pastoralis, showing one synergid partly disorganized, one embryo of four cells from unfertilized egg, one embryo from nuceilus, two polar nuclei and one synergid nucleus forming group at middle of sac, also three disorganizing antipodal cells; x 100. After
. Morphology of angiosperms (Morphology of spermatophytes. Part II). Angiosperms; Plant morphology. Fig. 106.—Embryos in parthenogenetic species of Alchemilla. A< A. sericata, one par- thenogenetic embryo from egg and one from synergic!, the other synergid breaking down ; the two polar nuclei and antipodal cells also shown ; x 284 ; B, A. pastoralis, showing one synergid partly disorganized, one embryo of four cells from unfertilized egg, one embryo from nuceilus, two polar nuclei and one synergid nucleus forming group at middle of sac, also three disorganizing antipodal cells; x 100. After The scattered literature of the subject is admirably sum- marized by Ernst 09 in his presentation of polyembryony in Tulipa Gesneriana. The following synoptical statement is taken from Ernst, and supplemented by the more recent addi- tions. Tn case the same form is treated in several accounts, there is no attempt to cite all of them or even the first refer- ence, but a selection is made of those citations that direct to. 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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