thorney locust (gteditschia triacanthos) prickly

gleditsia black locust gleditschia triacanthos honey gteditschia sweet superprickly tree north america weapons spread american rule force nitrogen fixation nodules prickly barb prickle sticker pricker spicule nick thorn burr bur pike spike needle quill dwarf shoot spicula spiculum barbed wire stinger spiniferous gooseberry prick painful inflammation decorative park plant hardwood reduces blood pressure stimulates breathing medicinal poisonous beans cattle pig food protected unapproachable