{# load django_bootstrap5#%}
   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 → Helenium → Helenium quadridentatum Labill.
Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
Helenium quadridentatum Labill. | Helenium quadridentatum Labill. | 13(1) | Asteracea | Watson 1973 Southw. Naturalist | |||
Helenium quadridentatum Labill. | Helenium quadridentatum Labill. | 13 | IPCN online | Keil, D. J. & T. F. Stuessy. 1977. Chromosome counts of Compositae from Mexico and the United States. Amer. J. Bot. 64: 791–798. | |||
Helenium quadridentatum Labill. | Helenium quadridentatum Labill. | 26 | IPCN72 | GRASHOFF, J.L., M.W. BIERNER, & D.K. NORTHINGTON. 1972. Chromosome numbers in North and Central American Compositae. Brittonia 24: 379-394. | |||
Helenium quadridentatum Labill. | Helenium quadridentatum Labill. | 13 | IPCN73-74 | WATSON, T.J., Jr. 1973. Chromosome numbers in Compositae from the southwestern United states. Southw. Naturalist 18: 117-124. |