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 → Angiosperms → Compositae → Silphium → Silphium radula var. gracile (A. Gray) J. A. Clevinger
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Silphium radula var. gracile (A. Gray) J. A. Clevinger | Silphium radula var. gracile (A. Gray) J. A. Clevinger | 14(1) | Asteracea | Zhao 1996 Sida (= J. Bot. Res. Inst. Texas) | |||
| Silphium gracile A. Gray | Silphium radula var. gracile (A. Gray) J. A. Clevinger | 14 | IPCN online | Xu, H. y., M. y. Chang & L. c. Tian. 1992. Studies on the karyotypes of 8 species in Silphium. Chin. Bull. Bot. 9(3): 47–49. | |||
| Silphium gracile A. Gray | Silphium radula var. gracile (A. Gray) J. A. Clevinger | 14 | IPCN online | Zhao, Z. 1996. Documented chromosome numbers 1996:2. Miscellaneous U. S. A. and Mexican species, mostly Asteraceae. Sida 17(1): 259–263. | |||
| ! | Silphium gracile A. Gray | Silphium radula var. gracile (A. Gray) J. A. Clevinger | 14 | IPCN67-71 | SETTLE, w. J. 1967. The chromosome morphology in the genus Silphium (Compositae). Ohio Jour. Sci. 67: 10-19. | ||
| ! | Silphium radula var. gracile (A. Gray) J. A. Clevinger | Silphium radula var. gracile (A. Gray) J. A. Clevinger | 14 | eFlora |