About Thalictrum dasycarpum Fisch., C.A.Mey. & Avé-Lall.
Scientific Name and Common Name
Thalictrum dasycarpum Fisch., C.A.Mey. & Avé-Lall., commonly called tall meadow rue, is an herbaceous flowering plant with an erect growth habit, reaching 40 to 200 centimeters (16 to 79 inches) tall.
Leaf Arrangement
Its leaves are compound, typically bearing 3 leaflets, though they occasionally have 5.
Leaflet Morphology
Each leaflet is shallowly lobed, with 2 to 5 lobes, and has otherwise smooth leaf margins.
Leaf Texture and Veins
The leaves are somewhat leathery with prominent veins.
Leaf Underside Pubescence
The underside of the leaf is usually covered in fine hairs, but is occasionally hairless.
Flowerhead Structure
Flowerheads are made up of many small flowers arranged in panicles, and have a roughly pyramid-shaped overall outline.
Sexual System
This species is usually dioecious, meaning it produces male and female flowers on separate individual plants.
Flower Size
The small flowers measure 7 millimeters (0.28 inches) across.
Flower Perianth Parts
They do not have petals, but do have 4 to 6 deciduous greenish-white sepals.
Flowering Period
Tall meadow rue flowers between late April and late July.
Geographic Distribution
This species has a broad distribution across central North America, ranging north to Yukon, west to Idaho, south to Texas, and east to New York state.
Habitat Types
It grows in a wide variety of wetland habitats, including swamps, wet meadows, prairies, and riparian woodlands.
