The Collaborative International Dictionary
                    Three-leafed
                    
                        
                
                                                                    Three-leafed \Three"-leafed`\, Three-leaved \Three"-leaved`\, a. (Bot.)
- Producing three leaves; as, three-leaved nightshade. 
- 
Consisting of three distinct leaflets; having the leaflets arranged in threes. Three-leaved nightshade. See Trillium. 
Usage examples of "three-leafed".
Before I pedaled off to find a path around the ditch, I thought of how Gordo would be feeling in a few days, his face and arms swollen with bites, when he’d realized all those green three-leafed vines down in Lucifer’s domain were poison ivy pregnant with silent evil.