Penstemon richardsonii(PEERI)
Pests
| Organism | Type | |
|---|---|---|
| Potato spindle tuber viroid (PSTVD0) | Experimental | |
* Singh RP (1973) Experimental host range of the potato spindle tuber 'virus'. American Potato Journal 50, 111-123. | ||
| Spiroplasma citri (as Plantaginaceae) (SPIRCI) | Wild/Weed | |