scientific name : Heracleum sphondylium L. france : berce.branc-fausse a canthe english : cow parsnip germany :braenklau italy:spondilio arab:ghaytal this plant I did not find be allergen but in race such as these plants 1- heracleum ruta graveolens , this tree is a kind of heracleum such as sap from fig tree have furocoumarine so is allergen ( p. Delaveau,G.faugeras,concours medical.04-06-1983,10523 ) 2- heracleum mantegazzianum a plant is permanent strong in growth ,original source in coming in to existence (genesis) is caucasia ( westren shore of the caspian sea also called to mountains and lands in the azerbijan,armenstan,georgia and abkhazia and an other)from these places have spreads to all over the world ,such as in 1910 in the royal garden (kew-london)mongrel (half breed )from this plant an other race have hollow (leaf) stem to height (altitued) three meter and big leaf lobe with lotus toothed (serrate) and lenght 50 c/m up the stem in the spring appears white color compelex flowers in umberlliferous big as 20-50 c/m stem of this plant is thick and hollow so children often using for praparation play things such as pieces doing to cut to pieces as empty pipline puting front of eyes then objects can see from to it or play thing hand or face or every where contacts in touch with this plant there become dermatite reasons in appearance the dermatite is related to chemical composition in the plant that in long time had studied about it and all over the plant in root ,stem and leaf have various kinds of furocoumarine when this furocoumarine under the sun light and ultra-violet ray instigate the skin dermatite appears for this reason some hygienic expert had request to eradicate and cuting this plant for protact general health .     thanks