Poisonous plants
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Poisonous Plants. Irritants - Poisonous Plants. Urushiol Oil. Urushiol (you-ROO-shee-ol) Main constituent of the irritant oil in plants of the Genus Toxicodendron. A mixture of several compounds which are derivatives of hydrocarbons in the C 15 to C 17 range. Rash.

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Poisonous Plants

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Poisonous plants

Poisonous Plants


Irritants poisonous plants

Irritants - Poisonous Plants


Urushiol oil

Urushiol Oil

  • Urushiol (you-ROO-shee-ol) Main constituent of the irritant oil in plants of the Genus Toxicodendron. A mixture of several compounds which are derivatives of hydrocarbons in the C15 to C17 range.


Poisonous plants

Rash

  • Caused by Urushiol oil

    • Found in the sap

    • Colorless or pale yellow

    • Turns brownish-black after exposure to air.

    • Oozes from any cut or crushed part of the plant, including the roots, stems and leaves

  • Oil penetrates within minutes and binds with skin proteins

  • Rash appears within 12-48 hours

  • 2-3 weeks to heal


Poison ivy genus toxicodendron

Poison IvyGenus Toxicodendron

3 Leaflets

  • Types:

    • Woody, ropelike vine

    • Trailing shrub on the ground

    • Free-standing shrub

  • Normally Three Leaflets

    • Can vary from groups of three to nine.

  • White Berries.

Waxy Cuticle

White Berries

Ropelike

Vine

Berries


Poison ivy

Poison Ivy

  • Range (climbing vine):

    • East

    • Midwest

    • South

  • Range (shrub):

    • Northern States

    • Western States

    • Canada


Identifying poison ivy

Identifying Poison Ivy

  • Leaflets:

    • Usually three

    • Red early spring

    • Shiny green later in spring

    • Red or Orange in Autumn

    • Center leaf stem is longer

    • Bottom leaflets opposite each other

    • Usually has notched edges

    • White berries close to stem, base of leaflets


Identifying poison ivy1

Identifying Poison Ivy


Poison oak

Poison Oak

  • Changes appearance every season

  • Oak like leaves

  • Three Leaflets

  • Opposite lower leaflets

  • Longer stem central leaflet

  • Leaflets with smooth hair underneath

  • White flowers

  • White berries


Poison oak1

Poison Oak

  • Eastern variety

    • Southeast

    • Low shrub

  • Western variety

    • Pacific Coast

    • 6-foot-tall clumps

    • Vines up to 30 feet long


Poison oak2

Poison Oak

  • Leaves of three, leave them be…..


Poison oak seasons

Poison Oak - Seasons

Early Spring

Spring

Summer

Fall

Winter

Anytime


Poison oak shrubs and vines

Poison Oak Shrubs and Vines


Poison sumac

Poison Sumac

  • Most common in:

    • Peat bogs of Northern US

    • Swampy Southern Regions

  • Rangy shrub up to 15 feet tall.

  • 7 to 13 smooth-edged leaflets.

  • Glossy pale yellow or cream-colored berries.


Identifying poison sumac

Identifying Poison Sumac


Prevention

Prevention

  • Prevention is the best treatment!!!

  • Long pants, long sleeves

  • Boots and Gloves

  • Barrier Creams may offer some protection (e.g., Ivy Block) before exposure

  • Wash immediately (within 5 minutes) with cold running water (stream, lake, hose)


Prevention1

Prevention

  • Within the first 30 minutes, soap and water helpful, after that….

  • Clean clothes, shoes, tools, etc. Oil can last on surfaces for 1-5 years!

  • If working at a specific location where poison ivy/oak/sumac is present

    • Wear Modified Level D (gloves, tyveks, boot covers, etc.)

    • Treat plant as if it is a chemical contamination (decon)


Treatment

Treatment

  • Over the counter

  • Prescription

  • Home Remedies


Nettles stingers genus urtica

Nettles - StingersGenus Urtica

  • Found in waste places and moist thickets, North America.

  • Stems and leaves armed with hollow hairs

    • Brittle

    • Gland-tipped

    • Easily broken

  • If injected, liquid produces burning sensation

  • Inject chemical mixture containing:

    • Histamine

    • Acetocholine

    • 5-hydrotryptamine

    • Formic Acid


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