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CHROMOSOME NUMBERS IN UMBELLIFERAE. IV.
Authors:Lincoln Constance  Tsan-Iang Chuang  C Ritchie Bell
Institution:Department of Botany, University of California, Berkeley

Department of Biological Sciences, Illinois State University, Norman

Department of Botany, University of North Carolina, Chapel Hill

Abstract:Chromosome numbers are reported for 167 collections representing 100 taxa of Umbelliferae. More than four-fifths of the counts apply to members of subfamilies Hydrocotyloideae (29) and. Saniculoideae (50); the remaining 21 belong to Apioideae. Chromosome numbers of plants belonging to 68 taxa are published here for the first time; chromosome numbers are verified for 23 taxa; and chromosome numbers differing from those published previously are reported in nine instances. No chromosome counts have previously been reported for 19 of the genera included. Polyploidy has been established for Azorella, Mulinum, Coaxana, Enantiophylla, and Tiozimia.
Keywords:
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