This section is from the book "Wild Flowers Of The North American Mountains", by Julia W. Henshaw. Also available from Amazon: Wild Flowers of the North American Mountains.
Stems: very stout, tomentose-pubescent, rigid. Leaves: petioled, ter-nately divided, the segments broadly ovate, cordate, stalked, lobed and sharply serrate; petioles much inflated. Flowers: umbels many-rayed.
Plate XXXVI

Cow Parsnip (Heracleum lanatum)
Heraclcum, from the Greek name of Hercules, is an excellent designation for this huge Cow Parsnip, which among plants is certainly a veritable hero for strength and size, frequently growing to a height of eight feet. Its huge leaves and great clusters of white flowers, often measuring a foot across, are very showy, and once seen will always be remembered. The plant has an extremely nasty smell.
 
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