| Name | Orobanche valida subsp. howellii Heckard & L. T. Collins |
| Authorship | Heckard & L. T. Collins |
| Rank | Subspecies |
| Placed in | Orobanche valida Jepson |
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| Name | Orobanche valida subsp. howellii Heckard & L. T. Collins |
| Authorship | Heckard & L. T. Collins |
| Rank | Subspecies |
| Placed in | Orobanche valida Jepson |