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CCDB → Angiosperms → Orobanchaceae → Castilleja → Orthocarpus attenuatus A. Gray
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Orthocarpus attenuatus A. Gray | Castilleja attenuata (A. Gray) T. I. Chuang & Heckard | 12 | IPCN online | Pinkava, D. J., T. REEVES, E. Lehto & L. A. McGILL. 1979. Plants new to Arizona Flora -- VII. Chromosome counts and new distribution records of noteworthy species. J. Arizona-Nevada Acad. Sci. 14: 37. | |||
| Orthocarpus attenuatus A. Gray | Castilleja attenuata (A. Gray) T. I. Chuang & Heckard | 12 | IPCN online | Chuang, T. I. & L. R. Heckard. 1982. Chromosome numbers of Orthocarpus and related monotypic genera (Scrophulariaceae: subtribe Castillejinae). Brittonia 34: 89–101. | |||
| Orthocarpus attenuatus A. Gray | Castilleja attenuata (A. Gray) T. I. Chuang & Heckard | 12 | Fedorov, 1974 | Lewis H. (D. n. 1959) | |||
| Orthocarpus attenuatus A. Gray | Castilleja attenuata (A. Gray) T. I. Chuang & Heckard | 12 | Cave1959 | H. Lewis 1959 |