1 Oriental Bittersweet (Celastrus orbiculatus) The flowers, fruits, and seeds are poisonous to humans, cats, and dogs if ingested. Solanum dulcamara is a species of vine in the potato genus Solanum, family Solanaceae.Common names include bittersweet, bittersweet nightshade, bitter nightshade, blue bindweed, Amara Dulcis, climbing nightshade, fellenwort, felonwood, poisonberry, poisonflower, scarlet berry, snakeberry, trailing bittersweet, trailing nightshade, violet bloom, and woody nightshade. Ingestion of the berries can lead to cardiac arrest (heart attack) and death. These vines all have very recognizable leaves, but importantly for winter identification, they also all have tendrils on their vines. Melanie Shaw / Flickr / CC BY-ND 2.0. The scientific name for this plant is Celastrus scandens. Similarly, is Bittersweet poisonous to humans? According to the US Department of Agriculture the American Bittersweet (Celastrus scandens) plant has a toxicity level of “None”. The fruit and seeds have a somewhat confirmed history of being mildly toxic for humans, while rabbits, squirrels and birds can eat them with impunity. Bittersweet nightshade belongs to the nightshade family, which is known for being poisonous. It has colorful, orange fruits that are the size of a pea. The berries contain cardiogenic toxins—the most poisonous part of the plant—which can have an immediate sedative effect on cardiac muscle tissue. It is commonly called Oriental bittersweet, as well as Chinese bittersweet, Asian bittersweet, round-leaved bittersweet, and Asiatic bittersweet.It is native to China, where it is the most widely distributed Celastrus species, and to Japan and Korea. Common Honeysuckle [image credit: iStock] 3. Many berries are commonly available in grocery stores, but other, equally delicious ones are abundant in the wild. This vine is invasive in parts of North America. These fruits are poisonous to humans when ingested, but are favorites of birds. The flowers, fruits, and seeds are poisonous to humans, cats, and dogs if ingested. Oriental Bittersweet [image credit: iStock] 2. All parts of the plant can be toxic to humans … Celastrus orbiculatus is a woody vine of the family Celastraceae. The name says it all — both the foliage and the berries of this plant are extremely toxic. Here’s some common plants with poisonous berries. Rabbits and deer browse the leaves and stems. American bittersweet is the only species of Celastrus native to North America. Older bittersweet vine bark is sometimes confused with ash tree bark. Additional names for this plant include Bittersweet, Climbing Bittersweet, False Bittersweet, Oriental Bittersweet, Shrubby Bittersweet, and Waxwork. Bittersweet fruits are eaten by eastern cottontails and fox squirrels, and by at least 15 species of birds, including wild turkey, ruffed grouse, and northern bobwhite. The wild birds eat the berries and distribute the seeds around in their poop. While not as toxic as its cousin belladonna, bittersweet nightshade is poisonous to pets and can be deadly to children who eat its brilliant red berries.   Many yards across North America have some bittersweet nightshade weeds growing in them, typically along a fence. Common Honeysuckle (Lonicera poericlymenum) Berries are poisonous if ingested. Pokeweed (Phytolacca Americana) Berries, seeds, and root are poisonous if ingested raw. There are three other common vines in our forests: Virginia creeper, woodbine (often confused with Virginia creeper) and poison ivy. Here are 10 tasty wild berries to try — and 8 poisonous ones to avoid. 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