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CCDB → Angiosperms → Plantaginaceae → Pennellianthus → Pennellianthus frutescens Crosswhite
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Pennellianthus frutescens Crosswhite | Pennellianthus frutescens Crosswhite | 40 | IAPT/IOPB | IAPT/IOPB Chromosome Data 5 | ||
| ! | Pennellianthus frutescens Crosswhite | Pennellianthus frutescens Crosswhite | 40 | IPCN online | Probatova, N. S. & A. P. Sokolovskaya. 1986. Chromosome numbers of the vascular plants from the far east of the USSR. Bot. Zhurn. SSSR 71: 1572–1575. | ||
| Penstemon frutescens Lamb. | Pennellianthus frutescens Crosswhite | 40 | Fedorov, 1974 | Sakai K. 1934 | |||
| Penstemon frutescens Lamb. | Pennellianthus frutescens Crosswhite | 40 | Fedorov, 1974 | Matsuura. SutO 1935 ( |