Toxicology - Toxic Plant ID Flashcards
(138 cards)
Identify this toxic plant:

Wood Sorrel
- (Oxalis* spp.)
- MOA: Hypocalcemia and precipitation of insoluble calcium oxalates in soft tissues and kidney damage.*
Identify this toxic plant:

Bracken Fern
(Pteridum aquilinum)
Main toxic Principle: Ptaquiloside glycoside, thiaminase
Clinical Signs: Ptaquiloside causes aplastic anemia in cattle and sheep, enzootic bovine hematuria due to neoplasm in urinary tract; tumors of the upper digestive tract and retinal damage in sheep; thimainase causes vitamin B1 deficiency resulting in neurotoxicity in monogastric animals

Identify this toxic plant:

Horsetail
(Equisetum spp.)
Main toxic Principle: Thiaminase
Clinical Signs: Thiamine deficiency in horses resulting in neuronal damage and signs of wasting, incoordination, posterior paralysis, inability to rise, muscle rigidity and convulsive seizures

Identify this toxic plant:

Pigweed
(Amaranthus retroflexus)
Main toxic Principle: Soluble oxalate, nitrate
Clinical Signs: Hypocalcemia, methemoglobinemia and respiratory signs, abortion, renal failure

Identify this toxic plant:

Sago Palm
(Cycas circinalis)
Mechanism of action - 3 toxins:
- Cycasin is a glycoside that causes GI irritation and liver damage. Also is teratogenic, mutagenic and carcinogenic
- B-Methylamino-L-alanine (BMAA) → neurotoxic amino acid
- Unknown toxin → may cause axonal degeneration in the CNS
Identify this toxic plant:

Chinese evergreen
- (Aglaonema spp)*
- MOA: needle shaped calcium oxalate crystals that penetrate the oral mucosa, tongue and throat causing irritation*
Identify this toxic plant:

Common milkweed
- (Asclepias spp)*
- MOA: cardiotoxic by inhibiting Na/K ATPase*
Identify this toxic plant:

Pencil Tree
(Euphorbia tirucalli)
Identify this toxic plant:
Dumbcane
- (Dieffenbachia* spp)
- **All parts of plants are toxic***
Main toxic Principle: Insoluble calcium oxalates
Clinical Signs: Irritation of lips, mouth, throat, vomiting

Identify this toxic plant:

Jimson Weed
(Datura stramonium)
Main toxic Principle: Atropine, hyoscine, hyoscyamine
Clinical Signs: Mydriasis, dry mouth, tachycardia, hypertension, urine retention, hallucinaion, seizures
Identify this toxic plant:

Rattlebox
- (Crotalaria* spp)
- MOA: Hepatotoxic; Severe liver damage and necrosis*
Main toxic Principle: Pyrrolizidine alkaloids
Identify this toxic plant:

Coontie
(**Zamia pumila)
Mechanism of action - 3 toxins:
- Cycasin is a glycoside that causes GI irritation and liver damage. Also is teratogenic, mutagenic and carcinogenic
- B-Methylamino-L-alanine (BMAA) → neurotoxic amino acid
- Unknown toxin → may cause axonal degeneration in the CNS
Identify this toxic plant:

Fringed bleeding-heart
Dicentra spp.
Identify this toxic plant:

Dumbcane
(Dieffenbachia spp.)

Identify this toxic plant:

Caladium
(Caladium spp.)

Identify this toxic plant:

Arrowhead vine, nephthytis
(Syngonium podophyllum)
Identify this toxic plant:

Chinese evergreen
(Aglaonema spp.)
Identify this toxic plant:

Flamingo plant
(Anthurium spp.)
Identify this toxic plant:

Peace Lilly
(Spathiphyllum spp.)
Identify this toxic plant:

Calla lily
(Zantedeschia aethiopica)

Identify this toxic plant:

Pothos, Devil’s ivy
(Epipremnum spp.)
Identify this toxic plant:

Saddle leaf philodendron
(Philodendron selloum)

Identify this toxic plant:

Philodendron
(Philodendron spp.)
Identify this toxic plant:

Monstera, Swiss cheese plant
(Monstera deliciosa)



























































































































































