American bittersweet

Celastrus scandens, commonly called American bittersweet or bittersweet, is a species of Celastrus that blooms mostly in June and is commonly found on rich, well-drained soils of woodlands. It is a sturdy perennial vine that may have twining, woody stems that are 30 feet (9.1 m) or longer and an inch or more thick at the base. The stems are yellowish-green to brown and wind around other vegetation, sometimes killing saplings by restricting further growth. It has...