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Poisonous Plant – Buckthorn , Cascara Sagrada rhamnaceae (Rhamnus cathartica, Rhamnus purshiana)
identification: small shrubs or trees, from 4'–20' tall, many branched, and densely foliated. Bark has gray-brown lenticels (spots) that turn gray-white as it ages. The leaves are 2" long, completely margined, elliptical to oblong, thin, blade-like, and hairy on the ribs. Numerous greenish-white blooms are borne on axillary cymes. Little white flowers with five petals cling to one another. Ripe fruit has two or three seeds and is red to purple-black in color. R. purshiana has leaves with 20–24 veins and reaches a height of 30'.
Habitat: R. purshiana is found in the foothills of Oregon, Washington, Montana, Idaho, and British Columbia. R. cathartica, another little shrub-like plant, is seen growing all across Lake Michigan's dunelands.
Toxins: the fruit and bark contain hydroxyanthracene, emodin, and highly cathartic anthraquinones.
Symptoms include catharsis, vomiting, and nausea.Rehydrate; the situation is self-limiting.
First Aid: Keep a restroom close by.
Pregnant women should not take pharmaceutical preparations designed to accelerate bowel movements.
identification: small shrubs or trees, from 4'–20' tall, many branched, and densely foliated. Bark has gray-brown lenticels (spots) that turn gray-white as it ages. The leaves are 2" long, completely margined, elliptical to oblong, thin, blade-like, and hairy on the ribs. Numerous greenish-white blooms are borne on axillary cymes. Little white flowers with five petals cling to one another. Ripe fruit has two or three seeds and is red to purple-black in color. R. purshiana has leaves with 20–24 veins and reaches a height of 30'.
Habitat: R. purshiana is found in the foothills of Oregon, Washington, Montana, Idaho, and British Columbia. R. cathartica, another little shrub-like plant, is seen growing all across Lake Michigan's dunelands.
Toxins: the fruit and bark contain hydroxyanthracene, emodin, and highly cathartic anthraquinones.
Symptoms include catharsis, vomiting, and nausea.Rehydrate; the situation is self-limiting.
First Aid: Keep a restroom close by.
Pregnant women should not take pharmaceutical preparations designed to accelerate bowel movements.
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