green-stemmed Joe-Pye-weed, purple Joe-Pye-weed
[Eupatoriadelphus purpureus (L.) R.M.King & H.Rob., more...]
Etymology: Eupatorium: from Greek name Mithridates Eupator, King of Pontus about 115BC who is said to have discovered an antidote to a commonly used poison in one of the species
Plants: erect, perennial, 4'-6' tall, hairless forb; stems greenish except with purple usually only at the nodes, not spotted, usually solid inside
Leaves: sharply toothed, mostly in whorls of 3-4, veins pinnately-arranged
Flowers: head with 4 -7 pale pink to purplish flowers; inflorescence usually a domed, branched cluster; blooms Aug.-Sept.
Habitat: full sun to partial shade; dry to moderate moisture; meadows, prairies, woods; in sandy, loamy soil
Conservation Status: Native
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 6, Wetland Indicator = FAC Atlas of the Wisconsin Prairie and Savanna Flora: by T.S. Cochrane & H.H. Iltis: habitat, distribution infomation / flowering and fruiting times USDA Plants Database: Federal Distribution and detailed information including photos Dan Tenaglia's The Missouri Flora: Fabulous photographs; detailed descriptions; color and leave arrangement key. David G. Smith's "Delaware Wilflowers": Beautiful photographs; descriptions Purple Sage - Ethnobotanical Information: Detailed usage, preparation, and other helpful information Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"