According to the US Department of Agriculture the American Bittersweet (Celastrus scandens) plant has a toxicity level of “None”. Common Honeysuckle (Lonicera poericlymenum) Berries are poisonous if ingested. Additional names for this plant include Bittersweet, Climbing Bittersweet, False Bittersweet, Oriental Bittersweet, Shrubby Bittersweet, and Waxwork.   Many yards across North America have some bittersweet nightshade weeds growing in them, typically along a fence. All parts of the plant can be toxic to humans … Bittersweet nightshade belongs to the nightshade family, which is known for being poisonous. Pokeweed (Phytolacca Americana) Berries, seeds, and root are poisonous if ingested raw. Celastrus orbiculatus is a woody vine of the family Celastraceae. Rabbits and deer browse the leaves and stems. Ingestion of the berries can lead to cardiac arrest (heart attack) and death. Many berries are commonly available in grocery stores, but other, equally delicious ones are abundant in the wild. Oriental Bittersweet [image credit: iStock] 2. This vine is invasive in parts of North America. American bittersweet is the only species of Celastrus native to North America. 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. There are three other common vines in our forests: Virginia creeper, woodbine (often confused with Virginia creeper) and poison ivy. The name says it all — both the foliage and the berries of this plant are extremely toxic. 1 Oriental Bittersweet (Celastrus orbiculatus) The flowers, fruits, and seeds are poisonous to humans, cats, and dogs if ingested. It has colorful, orange fruits that are the size of a pea. Melanie Shaw / Flickr / CC BY-ND 2.0. The berries contain cardiogenic toxins—the most poisonous part of the plant—which can have an immediate sedative effect on cardiac muscle tissue. Older bittersweet vine bark is sometimes confused with ash tree bark. The wild birds eat the berries and distribute the seeds around in their poop. Here’s some common plants with poisonous berries. The flowers, fruits, and seeds are poisonous to humans, cats, and dogs if ingested. Poisonous to Humans Problem for Cats Problem for Dogs Problem for Horses; Poisonous to Humans: Poison Severity: Low Poison Symptoms: vomiting, diarrhea, loss of consciousness, seizures Poison Toxic Principle: Cardenolides, alkaloids Causes Contact Dermatitis: No Poison Part: Bark Flowers Fruits Leaves Roots Sap/Juice Seeds Stems 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. 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 fruit and seeds have a somewhat confirmed history of being mildly toxic for humans, while rabbits, squirrels and birds can eat them with impunity. These fruits are poisonous to humans when ingested, but are favorites of birds. Similarly, is Bittersweet poisonous to humans? 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. Here are 10 tasty wild berries to try — and 8 poisonous ones to avoid. Common Honeysuckle [image credit: iStock] 3. The scientific name for this plant is Celastrus scandens. These vines all have very recognizable leaves, but importantly for winter identification, they also all have tendrils on their vines. And 8 poisonous ones to avoid poisonous to humans, cats, and seeds are to... Vines in our forests: Virginia creeper, woodbine ( often confused with Virginia creeper and. In our forests: Virginia creeper ) and death fruits, and dogs ingested... 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