1) Dangerous vegetation 2) Dangerous greenery 3) Dangerous plant 4) Dicey vegetation 5) Dicey plant 6) Dicey greenery 7) Dicey flora to eat 8) Dicey plant to eat 9) Dodgy flora to eat 10) Dodgy plant to eat 11) Flora with toxic properties 12) Hazardous plant 13) Hazardous greenery 14) Hazardous vegetation 
calla (def. 1).