CCDB is a community resource. If you are aware of any missing data or if any of the counts are erroneous please submit it to the forms submit new counts, or report erroneous counts.
CCDB → Gymnosperms → Zamiaceae → Dioon → Dioon spinulosum Dyer ex Eichl.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Dioon spinulosum Dyer ex Eichl. | Dioon spinulosum Dyer ex Eichl. | 18 | IPCN67-71 | STOREY, W.B. 1968. Somatic reduction in cycads. Science 159: 648-650. | ||
| ! | Dioon spinulosum Dyer ex Eichl. | Dioon spinulosum Dyer ex Eichl. | 18 | Darlington, 1955 | Sax & B. 1934 | ||
| ! | Dioon spinulosum Dyer ex Eichl. | Dioon spinulosum Dyer ex Eichl. | 18 | Rastogi2019 | Moretti A. Karyotype data on North and Central American Zamiaceae (Cycadales) and their phylogenetic implications. Am J Bot. 1990;77:1016–29. |