heracleum mantegazzianum

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Related to heracleum mantegazzianum: Giant Hogweed, Heracleum maximum
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giant hogweed

giant hogweed

Grows up to 17 feet high. Do not touch! Blisters skin, long-lasting scars, and—if it comes in contact with eyes—blindness. Numerous white flowers clustered in an umbrella-shaped head that is up to 80 centimetres (31 in) in diameter across its flat top. Dark reddish-purple stem and spotted leaf stalks that are hollow and produce sturdy bristles. Giant Hogweed is a photo-toxic plant. Its sap can cause phytophotodermatitis (severe skin inflammations) when the skin is exposed to sunlight or to UV-rays. Initially the skin turns red and starts itching. Then blisters form as it burns within 48 hours. They form black or purplish scars that can last several years. Protective clothing, including eye protection, should be worn when handling or digging it. If skin is exposed, the affected area should be washed thoroughly with soap and water and the exposed skin protected from the sun for several days. Also called Giant Cow Parsley, but not the same as common, much smaller cow parsley, which is edible.
Edible Plant Guide © 2012 Markus Rothkranz
References in periodicals archive ?
The isolation and identification of flavonoid aglycones from Heracleum mantegazzianum Somm.
Giant hogweed (Heracleum mantegazzianum) - The hairs on the stems and the undersides of the leaves of this invasive wetland plant carry poisonous sap.
Invasion by Heracleum mantegazzianum in different habitats in the Czech Republic.
(136.) The species appearing on both lists are Cogongrass (Imperata cylindrica), Giant Hogweed (Heracleum mantegazzianum), Old World Climbing Fern (Lygodium microphyllum), Tropical Soda Apple (Solanum viarum), and Witchweed (Striga asiatica).
* GIANT HOGWEED (Heracleum mantegazzianum) This ornamental plant escaped from gardens and colonises wasteland and riverbanks.
As the family cleared the land to begin construction of a summer cabin, a chance encounter between her son and some giant hogweed (Heracleum mantegazzianum) resulted in angry, blistered skin.
Giant hogweed - botanical name Heracleum mantegazzianum - is a member of the parsley or carrot family.
Similarly, habitats invaded by Heracleum mantegazzianum in eastern Europe, and Lonicera tatarica in eastern North America, had fewer species than uninvaded habitats (Woods 1993, Pysek and Pysek 1995).
Ym mon y clawdd hefyd roedd yr efwr (Heracleum sphondylium; hogweed) yn tyfu'n dal, ond yr efwr cyffredin oedd hwn nid yr efwr enfawr (Heracleum mantegazzianum; giant hogweed) sydd wedi bod yn creu trafferthion yr haf yma.
Comparing the rate of invasion by Heracleum mantegazzianum at continental, regional, and local scales.