| Answer | Crossword Clue |
|---|---|
| RHUS | Poison oak or ivy. |
| urushiol | a mixture of catechol derivatives with saturated or unsaturated side chains of 15 or 17 carbon atoms that is an oily toxic irritant principle present in poison ivy and some related plants (genus Rhus) and in lacquers derived from such plants |
| YEARA | Poison oak. |
| SUMAC | Poison oak |
| SUMAC | Poison oak cousin |
| RASH | Reaction to poison oak |
| SHRUB | Poison oak, e.g. |
| SUMAC | Poison oak, e.g. |
| YEARA | Poison oak of Pacific coast. |
| YEARA | Poison oak of the Pacific Coast. |
