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CCDB → Pteridophytes → Salviniaceae → Azolla → Azolla rubra R. Br.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Azolla rubra R. Br. | Azolla filiculoides var. rubra (R. Br.) Strasb. | 44 | IPCN online | Stergianou, K. K. & K. Fowler. 1989. Preliminary report of chromosome counts in the genus Azolla (Pteridophyta). Fern Gaz. 13: 317–319. | |||
| Azolla rubra R. Br. | Azolla filiculoides var. rubra (R. Br.) Strasb. | 44 | IPCN online | Stergianou, K. K. & K. Fowler. 1990. Chromosome numbers and taxonomic implications in the fern genus Azolla (Azollaceae). Pl. Syst. Evol. 173: 223–239. |