Poisonous Plants of Colorado Signs of Plant Poisoning
- Slides: 71
Poisonous Plants of Colorado
Signs of Plant Poisoning l l l l Sudden death Transitory illness = lasts only a short time General body weakness Disturbance of the central nervous, vascular and endocrine systems (any gland of the body that secretes a substance or hormone, thereby controlling certain bodily processes (thyroid, adrenal)) Photosensitization = external parts of body (usually skin), become sensitive to light Frequent urination Diarrhea Bloating
Signs of Plant Poisoning l l l l l Chronic debilitation (loss of strength or a weakened condition) and death Embryonic death Fetal death Abortion Extensive liver necrosis (death of animals cells of tissues) and/or cirrhosis (a diffuse fibrosis (hardening) of the liver, and some other organs Edema (accumulation of fluid in the subcutaneous tissue) and/or abdominal dropsy Tumor growth in tissues Congenital deformities = acquired during prenatal life; birth defects Metabolic deficiencies Physical injury
Arrowgrass
Arrowgrass © Br. Alfred Brousseau, Saint Mary's College.
Arrowgrass Perennial which resembles grass except the leaves are thicker and circular. l 6 -12 inches tall l Stems – half round l
Broom snakeweed
Broom snakeweed ©W. L. Wagner. Courtesy of Smithsonian Institution, Dept. of Systematic Biology, Botany.
Broom snakeweed l Low, perennial half-shrub l 1 to 2 feet tall l Many branched l Leaves are linear, entire, and alternately arranged l Yellow flowers in small composite heads
Chokecherry
Chokecherry l l l Shrub or small tree Smooth dark bark Green oval leaves with small-toothed edges White flowers in umbrella clusters Red fruit
Death camas
Death camas
Death camas Perennial – rises from bulb resembling an onion except the bulb is odorless l Leaves are flat, long & narrow w/ parallel veins l White flowers in early spring l 4 to 18 inches tall l
Gambel oak
Gambel oak l Shrubs & trees are best recognized by: ¡ ¡ their fruit – the acorn Their leathery leaves with wavy margins
Greasewood
Greasewood
Greasewood l l l l Native shrub Erect, but much branched plant Thorny 2 to 5 feet tall High in water content Fleshy, bright green leaves Gray bark on older stems
Halogeton
Halogeton l l l Bushy, succulent annual Little hooked spine on tip of leaf High water content in spring Seed covered with white scalelike wings Resembles Russian thistle
Horsebrush
Horsebrush Shrub l 2 to 4 feet high l Yellow flowers in spring l Spiny, silvery-white leaves l Courtesy of Smithsonian Institution, Dept. of Systematic Biology, Botany.
Low larkspur
Low larkspur l Perennial l Erect, seldom branched l Shallow cluster of tuberous roots l Deeply indented leaves l Blue flowers are clustered around tops of stems
Tall larkspur
Tall larkspur l Perennial l Much like low larkspur l Note the long “spur” on the flower from which the name larkspur is derived l Flowers are spread out more at top of plant
Locoweed
Locoweed Perennial l Erect or spreading stems l Flowers and stems resemble garden pea (but much smaller) l
Lupine ©W. L. Wagner. Courtesy of Smithsonian Institution, Dept. of Systematic Biology, Botany.
Lupine l Not all lupines are poisonous l Annual or perennial l Some shrubs l Leaves are divided into 2 to 9 parts l Attached to a single point like spokes on a wheel l Spikes of pea-shaped flowers in early summer
Milkvetch
Milkvetch
Milkvetch l l l Perennial Flowers in June or July Found on dry sites Flower resembles sweet peas Vary in color from creamy white to shades of violet
Pine Needles ©J. S. Peterson. USDA NRCS NPDC. Evergreen, Jefferson Co. , CO. July 15, 2001. Herman, D. E. et al. 1996. North Dakota tree handbook. USDA NRCS ND State Soil Conservation Committee; NDSU Extension and Western Area Power Admin. , Bismarck, ND. Courtesy of ND State Soil Conservation Committee. Provided by USDA NRCS ND State Office. ND
Pine Needles A 50 -150 foot tall tree l Needles are usually in groups of 3 l Seeds are in pine cones l ©J. S. Peterson. USDA NRCS NPDC. Evergreen, Jefferson Co. , CO. July 15, 2001
Sneezeweed
Sneezeweed
Sneezeweed Perennial l Large yellow to orange heads that resemble the sunflower (except they have yellow centers) l
Tansy ragwort
Tansy ragwort
Tansy ragwort Biennial or perennial l Strongly scented herb with simple stems l 8 inches to 3 feet high l Whole plant has strong, unpleasant odor when crushed l
Prevention of plant poisoning l l l l l Follow good pasture or range management practices – plant poisoning is usually a sign of a sick range Know the poisonous plants common to your area Know the symptoms that generally indicate plant poisoning Avoid turning to pasture in early spring Provide supplemental feed during droughts, after plants become mature and after early frost Avoid turning very hungry animals where there are poisonous plants Avoid driving animals too fast when trailing Remove promptly all animals from infested areas when plant poisoning strikes Treat promptly, preferable by a veterinarian
Eyewitness Account l l l What kind of livestock (specie) How the animal acted (signs) What time of year this occurred What the plant looked like What you are going to do to prevent this from occurring again “We are live at the Tox Plant Ranch where animals have been found dead – we are talking with the owner – Mr. Doe – what have you had happening here? ”
Arrowgrass
Arrowgrass © Br. Alfred Brousseau, Saint Mary's College.
Broom snakeweed
Broom snakeweed ©W. L. Wagner. Courtesy of Smithsonian Institution, Dept. of Systematic Biology, Botany.
Chokecherry
Death camas
Death camas
Gambel oak
Gambel oak
Greasewood
Greasewood
Halogeton
Halogeton
Horsebrush
Horsebrush Courtesy of Smithsonian Institution, Dept. of Systematic Biology, Botany.
Low larkspur
Tall larkspur
Locoweed
Locoweed
Lupine ©W. L. Wagner. Courtesy of Smithsonian Institution, Dept. of Systematic Biology, Botany.
Milkvetch
Milkvetch
Pine Needles ©J. S. Peterson. USDA NRCS NPDC. Evergreen, Jefferson Co. , CO. July 15, 2001. Herman, D. E. et al. 1996. North Dakota tree handbook. USDA NRCS ND State Soil Conservation Committee; NDSU Extension and Western Area Power Admin. , Bismarck, ND. Courtesy of ND State Soil Conservation Committee. Provided by USDA NRCS ND State Office. ND
Sneezeweed
Sneezeweed
Tansy ragwort
Tansy ragwort
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