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Prof. Itay Mayrose Lab – Plant Evolution, Bioinformatics, & Comparative Genomics







CCDB is a community resource. If you are aware of any missing data or if any of the counts are erroneous, please submit new counts, or report erroneous counts.


CCDB → Angiosperms → Cactaceae → Cylindropuntia → Opuntia spinosior (Engelm.) Toumey

6 chromosome counts in Opuntia spinosior (Engelm.) Toumey:


Name Accepted Name Gametophytic(n) Sporophytic(2n) Data Source reference
  Opuntia spinosior (Engelm.) Toumey Cylindropuntia spinosior (Engelm.) F. M. Knuth 11   IPCN online Pinkava, D. J. & B. D. Parfitt. 1982. Chromosome numbers in some cacti of western North America IV. Bull Torrey Bot. Club. 109: 121–128.
  Opuntia spinosior (Engelm.) Toumey Cylindropuntia spinosior (Engelm.) F. M. Knuth 11   IPCN online Pinkava, D. J., M. A. Baker, B. D. Parfitt, M. W. Mohlenbrock & R. D. Worthington. 1985. Chromosome numbers in some cacti of western North America-V. Syst. Bot. 10: 471–483.
  Opuntia spinosior (Engelm.) Toumey Cylindropuntia spinosior (Engelm.) F. M. Knuth   22, 33 IPCN online Baker, M. A. & D. J. Pinkava. 1987. A cytological and morphometric analysis of a triploid apomict, Opuntia x kelvinensis (subgenus Cylindropuntia, Cactaceae). Brittonia 39(3): 387–401.
  Opuntia spinosior (Engelm.) Toumey Cylindropuntia spinosior (Engelm.) F. M. Knuth 11   IPCN online Pinkava, D. J., B. D. Parfitt, M. A. Baker & R. D. Worthington. 1992. Chromosome numbers in some cacti of western North America---VI, with nomenclatural changes. Madroño 39(2): 98–113.
  Opuntia spinosior (Engelm.) Toumey Cylindropuntia spinosior (Engelm.) F. M. Knuth 11   IPCN online Pinkava, D. J., J. P. Rebman & M. A. Baker. 1998. Chromosome numbers in some cacti of western North America---VII. Haseltonia 6: 32–41.
!   Opuntia spinosior (Engelm.) Toumey Cylindropuntia spinosior (Engelm.) F. M. Knuth 11   IPCN73-74 PINKAVA, D.J., M.G. MCLEOD, L.A. MCGILL, & R.C. BROWN. 1973. Chromosome numbers in some cacti of western North America-II. Brittonia 25: 2-9.