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CCDB → Angiosperms → Compositae → Pentachaeta → Pentachaeta fragilis Brandegee
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Pentachaeta fragilis Brandegee | Pentachaeta fragilis Brandegee | 9(1) | Asteracea | Solbrig et al. 1964 Amer. J. Bot. | |||
| ! | Pentachaeta fragilis Brandegee | Pentachaeta fragilis Brandegee | 18 | eFlora | |||
| ! | Chaetopappa fragilis (Brandegee) D. D. Keck | Pentachaeta fragilis Brandegee | 18 | Fedorov, 1974 | Solbrig et al. 1964 |