. Cytological studies of five interspecific hybrids of Crepis leontodontoides. Karyokinesis; Crepis. 148 University of California Publications in Agricultural Sciences [Vol. 6 four of the chromosomes have already divided, and the other four are in the process of division, probably resulting in an interkinesis some- what like that in figure 9eZ. Here there was probably an 8-8 distri- bution of halves of univalent chromosomes, but in one nucleus three chromosomes are again dividing: and in the other nucleus one chro-. Please note that these images are extracted from scanned page images that may

. Cytological studies of five interspecific hybrids of Crepis leontodontoides. Karyokinesis; Crepis. 148 University of California Publications in Agricultural Sciences [Vol. 6 four of the chromosomes have already divided, and the other four are in the process of division, probably resulting in an interkinesis some- what like that in figure 9eZ. Here there was probably an 8-8 distri- bution of halves of univalent chromosomes, but in one nucleus three chromosomes are again dividing: and in the other nucleus one chro-. Please note that these images are extracted from scanned page images that may Stock Photo

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. Cytological studies of five interspecific hybrids of Crepis leontodontoides. Karyokinesis; Crepis. 148 University of California Publications in Agricultural Sciences [Vol. 6 four of the chromosomes have already divided, and the other four are in the process of division, probably resulting in an interkinesis some- what like that in figure 9eZ. Here there was probably an 8-8 distri- bution of halves of univalent chromosomes, but in one nucleus three chromosomes are again dividing: and in the other nucleus one chro-. 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 work.. Avery, Priscilla, 1899-1939. Berkeley, California, University of California press

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RMW22HGW–Archive image from page 18 of Cytological studies of five interspecific. Cytological studies of five interspecific hybrids of Crepis leontodontoides cytologicalstudi65aver Year: 1930

RMPFKAP4–. Cytological studies of five interspecific hybrids of Crepis leontodontoides. Karyokinesis; Crepis. . 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 work.. Avery, Priscilla, 1899-1939. Berkeley, California, University of California press

RMRD2BW7–. Cytological studies of five interspecific hybrids of Crepis leontodontoides. Karyokinesis; Crepis. . 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 work.. Avery, Priscilla, 1899-1939. Berkeley, California, University of California press

RMW22HFM–Archive image from page 18 of Cytological studies of five interspecific. Cytological studies of five interspecific hybrids of Crepis leontodontoides cytologicalstudi65aver Year: 1930 1930] Avery: Hybrids of Crepis leontodontoides 151 again disappears in this hybrid. In figure 11 a somatic plate from a rather old root is shown. Here all the chromosomes are contracted so that the individuality of the leontodontoides chromosomes is not evi- dent, but the distinction between the parental sets is obvious.

RMPFKAMD–. Cytological studies of five interspecific hybrids of Crepis leontodontoides. Karyokinesis; Crepis. . 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 work.. Avery, Priscilla, 1899-1939. Berkeley, California, University of California press

RMRD2C5G–. Cytological studies of five interspecific hybrids of Crepis leontodontoides. Karyokinesis; Crepis. . 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 work.. Avery, Priscilla, 1899-1939. Berkeley, California, University of California press

RMW22E00–Archive image from page 12 of Cytological studies of five interspecific. Cytological studies of five interspecific hybrids of Crepis leontodontoides cytologicalstudi65aver Year: 1930 1930] Avery: Hybrids of Crepis leontodontoides 145 lite on a long thread, and is thus easily identified. The D-chroinosome of leontodontoides loses its satellite, as in the hybrid with tectorum. The c-chromosonie of parviflora is so similar to the B-chromosome of leontodontoides in morphology that distinction between the two is not usually possible (fig. 6).

RMPFKAR4–. Cytological studies of five interspecific hybrids of Crepis leontodontoides. Karyokinesis; Crepis. . 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 work.. Avery, Priscilla, 1899-1939. Berkeley, California, University of California press

RMRD2BX7–. Cytological studies of five interspecific hybrids of Crepis leontodontoides. Karyokinesis; Crepis. . 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 work.. Avery, Priscilla, 1899-1939. Berkeley, California, University of California press

RMW2709H–Archive image from page 29 of Cytological studies of five interspecific. Cytological studies of five interspecific hybrids of Crepis leontodontoides cytologicalstudi65aver Year: 1930 162 University of California Publications in Agricultural Sciences [Vol. 6 location, deletion, duplication, union, and fragmentation, which have been observed to occur both under natural conditions and after sub- jection to high frequency radiations in Drosophila and Datura. An illustration of the extent of the change in a chromosome com- plement which these processes might produce if operating over long periods

RMPFKANC–. Cytological studies of five interspecific hybrids of Crepis leontodontoides. Karyokinesis; Crepis. . 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 work.. Avery, Priscilla, 1899-1939. Berkeley, California, University of California press

RMRD2C7C–. Cytological studies of five interspecific hybrids of Crepis leontodontoides. Karyokinesis; Crepis. Tig. 1. Bosette leaves of Crepis leontodontoides, C. capillaris and between them their P, hybrid. Thus the hybrids between leontodontoides and aurea and between leontodontoides and marschaUi were closer to leontodontoides than to the other parent; while the Fx leontodontoides x parviflora resembled parviflora more closely. In the other two cases, Fx leontodontoides x capillaris and Fx leontodontoides x tectorum, the hybrid was inter- mediate in habit and in all character expressions. This is we

RMW26XB1–Archive image from page 4 of Cytological studies of five interspecific. Cytological studies of five interspecific hybrids of Crepis leontodontoides cytologicalstudi65aver Year: 1930 1930] Avery: Hybrids of Crepis leontodontoides 137 with C. leontodontoides were obtained. C. aurea is the only species of the subgenus Catonia with which hybrids were secured, although extensive crosses were made with C. tingitana. ¥1 hybrids were also secured with the Barkliausia species C. marschaUi. In every case the F1 hybrids possessed features characteristic of each of the two parental species. In three cas