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CCDB → Angiosperms → Cactaceae → Cylindropuntia → Cylindropuntia acanthocarpa (Engelm. & J. M. Bigelow) F. M. Knuth

7 chromosome counts in Cylindropuntia acanthocarpa (Engelm. & J. M. Bigelow) F. M. Knuth:

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		Name	Accepted Name	Gametophytic(n)	Sporophytic(2n)	Data Source	reference
!		Cylindropuntia acanthocarpa var. acanthocarpa	Cylindropuntia acanthocarpa (Engelm. & J. M. Bigelow) F. M. Knuth	11		Baker, 2009
!		Cylindropuntia acanthocarpa var. thornberi (Thornber & Bonker) Backeb.	Cylindropuntia acanthocarpa (Engelm. & J. M. Bigelow) F. M. Knuth	11		Baker, 2009
!		Opuntia acanthocarpa var. thornberi (Thornber & Bonker) L. D. Benson	Cylindropuntia acanthocarpa (Engelm. & J. M. Bigelow) 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 acanthocarpa var. thornberi (Thornber & Bonker) L. D. Benson	Cylindropuntia acanthocarpa (Engelm. & J. M. Bigelow) 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 acanthocarpa var. thornberi (Thornber & Bonker) L. D. Benson	Cylindropuntia acanthocarpa (Engelm. & J. M. Bigelow) 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 acanthocarpa Engelm. & J. M. Bigelow	Cylindropuntia acanthocarpa (Engelm. & J. M. Bigelow) 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.
!		Opuntia acanthocarpa Engelm. & J. M. Bigelow	Cylindropuntia acanthocarpa (Engelm. & J. M. Bigelow) F. M. Knuth		22	IPCN73-74	YUASA, H., H. SHIMIZU, S. KASHIWAI, & N. KONDO. 1974. Chromosome numbers and their bearing on the geographic distribution in the subfamily Opuntioideae (Cactaceae). Rep. Inst. Breed. Research, Tokyo Univ. Agri. No. 4: 1-10.