. Chromosomes and phylogeny in Crepis. II. The relationships of one hundred eight species. Crepis; Plants; Karyokinesis. 294 University of California Publications in Agricultural Sciences [Vol. 6 general, however, the degree of morphological resemblance is roughly indicated by this diagram. The 5-paired species, especially sibirica and pontana, are in several respects among the most primitive morphological types in the entire genus, while aurea, particularly subsp. lucida, exhibits the greatest re- CATONIA PHYLOGENY AND CHROMOSOME NUMBER AUREA IOv HOOKERIANA 8 PONTANA 10 SIBIRICA 10 VISCIDULA
. Chromosomes and phylogeny in Crepis. II. The relationships of one hundred eight species. Crepis; Plants; Karyokinesis. 294 University of California Publications in Agricultural Sciences [Vol. 6 general, however, the degree of morphological resemblance is roughly indicated by this diagram. The 5-paired species, especially sibirica and pontana, are in several respects among the most primitive morphological types in the entire genus, while aurea, particularly subsp. lucida, exhibits the greatest re- CATONIA PHYLOGENY AND CHROMOSOME NUMBER AUREA IOv HOOKERIANA 8 PONTANA 10 SIBIRICA 10 VISCIDULA 12 PALUDOSA 12. C0NY2AEF0LIA 8 BHOTANICA 16 KASHMIRICA 12 Tig. 3. Phylogenetic relations and chromosome numbers of seventeen species in subgenus Catonia. duction in size of the whole plant and all its parts to be found in the Catonia species thus far studied cytologically. The 4-paired Catonia species fall into two main groups and they may represent two or three different progenial stocks. On the left are shown the three species already mentioned and C. hookeriana, which is suffi- ciently like hypochaeridea to suggest that it diverged from the same stock. On the right are six species, conyzaefolia-crocea, which are evi- dently related and which may have sprung from the same stock as the 4-paired species on the left. The evidence for derivation of crocea from. 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 Babcock, E. B. (Ernest Brown), 1877-1954; Cameron, Donald Ross, 1907-1984. Berkeley, Calif. , University of California Press
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