Ranunculus uncinatus
| Ranunculus uncinatus | ||||||||||||
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Ranunculus uncinatus |
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| Scientific name | ||||||||||||
| Ranunculus uncinatus | ||||||||||||
| D. Don |
Ranunculus uncinatus is a plant species in the genus buttercup fromthe buttercup family (Ranunculaceae).
description
The stems are erect and glabrous or bristly. They never take root at the knot . The stem base is not onion-like. The roots are never bulbous. The leaf blades of the basal leaves are 1.8 to 5.6 × 2.8 to 8.3 centimeters in size, heart-shaped to kidney-shaped in outline, three-part, occasionally also three-pied. The leaflets can in turn be lobed. The last sections, ie the leaves or leaflets, are elliptical to lanceolate. The leaf margin is serrated or serrated. The end of the leaf is pointed to rounded blunt.
The prescription is hairless. The sepals are 2 to 3.5 × 1 to 2 millimeters in size, bent back or sometimes spread out and hairy. The 5 petals are 2 to 4 (rarely up to 6) × 1 to 2 (rarely up to 3) millimeters in size and yellow. The head of the achenes is 4 to 7 × 4 to 7 millimeters in size and spherical or hemispherical. The achenes are 2 to 2.8 × 1.6 to 2 millimeters in size, hairless or scattered bristly. The edge of the achenes forms a narrow, 0.1 to 0.2 millimeter wide rib. The beak is 1.2 to 2.5 millimeters long, lanceolate, curved, hook-like and persistent.
The number of chromosomes is 2n = 28.
The flowering period extends from spring (April) to summer (August).
Occurrence
Ranunculus uncinatus occurs in western North America. The area extends from the Aleutian Islands along the coast of Alaska to California in the south. From about the middle of British Columbia, the area extends further inland to the east. The species is found here in Alberta, Washington, Oregon, Idaho, Montana, Wyoming, Colorado and New Mexico. A disjoint occurrence exists in northwest Arizona.
The species grows in damp forests and grassland at altitudes from 0 to 3400 meters. It is often found along rivers.
Systematics
Ranunculus uncinatus was first described by David Don in 1831 .
use
Indian tribes used Ranunculus uncinatus for various medicinal purposes, for example as a remedy for rheumatism.
supporting documents
- Alan T. Whittemore: Ranunculus uncinatus . In: Flora of North America. Vol. 3 . on-line
Web links
- Distribution map of Ranunculus uncinatus in the Flora of North America