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+_1/1of :399 .0:32 719615D5?5 <br />'• ~ . • <br />'~.r , <br />t <br />Common <br />Nzme <br />desert piincesplume <br />Effect and symptoms <br />L6D.~ TJ."+D <br />-7- <br />xientific Name <br />$tanlaya plnnata <br />P.:.3E '_ 1 <br />• <br />Sha1y Plains 446 <br />Se aeon Animals <br />Dangero+is Affected <br />early spring horse- <br />when feed is eattle- <br />scarce. sheep <br />Selenium ig the toxic principle. Not a common problem since plant is highly <br />unpalatable. Good indicator of eeleniferous soils. Plants that grow on <br />Cretaceous or Eocene shale soils bearing selenium may affect animals. When <br />plants ate crushed in the hand, a sulfurous odor is given off. Poisoning is <br />c~rmulative. Poisoning can cause alkali disease (the chronic disease) which <br />dcvelopa from eacin~ sma'I1 amounts of saleni.m-hearing vegetation over an <br />extensive period of time or poisoning can cause blind staggers (the acute <br />disease) which casults from fending on relatively large amounts of selenium <br />in a short time. In acute cases of selenium poisoning, enis+ale walk <br />aimlessly into ob;ccts. "Blind staggers" or alkali d:.sease are names given <br />for the disease. ?loofs grow abnormally with the '_ormation of deep rings. <br />The hair falls out--especially the mane and tell of horses. Recovery of <br />animals affected may take several months ox years, eves after being placed <br />on good forage. <br />Seeeon Animals <br />Common 8cie^tific Name Dangerous Affected <br />Name <br />twgrooved milkvetch Astragalus bisulcatus A11, but All <br />especially <br />in spring. <br />Effect and aymptame <br />Poisoning ie caused by selenium. .Signs of chronic poisocing are cough coat, <br />dullness, emaciation, lameness, hoof deformities may occur and the mane and <br />tail may fall out. Acute poisoning symtome are loss of appetite, depression, <br />polyuria, dyspnea, coma and 3eath. This plant is a good indicator of <br />selenium bearing sc`_ls. <br />8. Location of Typical Examples of the Site <br />a. Groat Ranch east on Aanover P.oad. <br />b. it Paso County, Antelope Springs. <br />c. North of Ordway, Crowley Councy. <br />~~ <br />