CCDBAngiospermsCompositaeHeterothecaHeterotheca horrida (Rydb.) V. L. Harms

4 chromosome counts in Heterotheca horrida (Rydb.) V. L. Harms:


Name Accepted Name Gametophytic(n) Sporophytic(2n) Data Source reference
!   Heterotheca horrida (Rydb.) V. L. Harms Heterotheca villosa var. nana (A. Gray) Semple 18   IPCN online Ward, D. E. 1984. Chromosome counts from New Mexico and Mexico. Phytologia 56(1): 55–60.
!   Heterotheca horrida (Rydb.) V. L. Harms Heterotheca villosa var. nana (A. Gray) Semple 9II   IPCN online Semple, J. C. 1985. Chromosome number determinations in fam. Compositae tribe Astereae. Rhodora 87: 517–527.
!   Heterotheca horrida (Rydb.) V. L. Harms Heterotheca villosa var. nana (A. Gray) Semple 9,18 triploid   IPCN online Semple, J. C. 1977. Cytotaxonomy of Chrysopsis and Heterotheca (Compositae Astereae): A new interpretation of phylogeny. Canad. J. Bot. 55: 2503–2513.
!   Heterotheca horrida (Rydb.) V. L. Harms Heterotheca villosa var. nana (A. Gray) Semple 9   IPCN73-74 HARMS, V.L. 1974. Chromosome numbers in Heterotheca, including Chrysopsis (Compositae: Asterae), with phylogenetic interpretations. Brittonia 26: 61-69.