early meadow-rue, quicksilver-weed
Etymology: Thalictrum: from thaliktron, a name used to describe a plant with divided leaves, and a name given to the genus by Dioscorides, the Greek physician and pharmacologist who wrote the Materia Medica, which remained the leading pharmacological text for 16 centuries
Plants: erect, perennial, 12"-28" tall forb
Leaves: thin, hairless, all long-stalked, 1-4 times 3-parted, leaflets 1/3"-1 3/4" wide with 3-12 often round-toothed lobes
Flowers: greenish to yellowish, 4-5-parted, petal-like sepals falling early, fringe-like filaments remain; inflorescence a 6" small, branched cluster; blooms April-May
Fruits: dry seed
Habitat: partial sun to shade; dry to moderate moisture; woods, forests; in sandy, loamy soil
Hazardous: Careful, this plant is hazardous!
Conservation Status: Native
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 7, Wetland Indicator = FACU+ 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. Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"