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CCDB → Angiosperms → Cactaceae → Cylindropuntia → Opuntia acanthocarpa var. major (Engelm. & J. M. Bigelow) L. D. Benson

9 chromosome counts in Opuntia acanthocarpa var. major (Engelm. & J. M. Bigelow) L. D. Benson:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
!		Opuntia acanthocarpa var. major (Engelm. & J. M. Bigelow) L. D. Benson	Cylindropuntia acanthocarpa subsp. major (Engelm. & J. M. Bigelow) U. Guzmán	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 acanthocarpa var. major (Engelm. & J. M. Bigelow) L. D. Benson	Cylindropuntia acanthocarpa subsp. major (Engelm. & J. M. Bigelow) U. Guzmán	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 acanthocarpa var. major (Engelm. & J. M. Bigelow) L. D. Benson	Cylindropuntia acanthocarpa subsp. major (Engelm. & J. M. Bigelow) U. Guzmán	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 acanthocarpa var. major (Engelm. & J. M. Bigelow) L. D. Benson	Cylindropuntia acanthocarpa subsp. major (Engelm. & J. M. Bigelow) U. Guzmán	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 acanthocarpa var. major (Engelm. & J. M. Bigelow) L. D. Benson	Cylindropuntia acanthocarpa subsp. major (Engelm. & J. M. Bigelow) U. Guzmán	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 acanthocarpa var. major (Engelm. & J. M. Bigelow) L. D. Benson	Cylindropuntia acanthocarpa subsp. major (Engelm. & J. M. Bigelow) U. Guzmán	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 acanthocarpa var. major (Engelm. & J. M. Bigelow) L. D. Benson	Cylindropuntia acanthocarpa subsp. major (Engelm. & J. M. Bigelow) U. Guzmán	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 acanthocarpa var. major (Engelm. & J. M. Bigelow) L. D. Benson	Cylindropuntia acanthocarpa subsp. major (Engelm. & J. M. Bigelow) U. Guzmán	11		IPCN67-71	PINKAVA, D.J., & M.G. MCLEOD. 1971. Chromosome numbers in some cacti of western North America. Brittonia 23: 171-176.
!		Opuntia acanthocarpa var. major (Engelm. & J. M. Bigelow) L. D. Benson	Cylindropuntia acanthocarpa subsp. major (Engelm. & J. M. Bigelow) U. Guzmán	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.