Ranunculus allegheniensis
| Ranunculus allegheniensis | ||||||||||||
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Drawing of Ranunculus allegheniensis from Britton & Brown (1913), Illustrated flora of the northern states and Canada |
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| Scientific name | ||||||||||||
| Ranunculus allegheniensis | ||||||||||||
| Britton |
Ranunculus allegheniensis is a species of the buttercup family.
description
The stems are 10 to 50 centimeters high, erect or almost erect and hairless. Each stem bears 9 to 40 flowers. The roots are slender and 0.2 to 0.8 millimeters thick. The basal leaves are permanent. Their leaf blades are 1 to 3.5 × 1.5 to 4.5 centimeters in size and kidney-shaped. The inner ones are undivided, the outer three-lobed to three-ply. The leaf base is truncated or heart-shaped, the edge is notched, and the end of the leaf is rounded or blunt. The flower stalk is hairless or hairy downy. The prescription is finely hairy. The sepals are 2 to 3 × 1 to 2 millimeters in size and scattered stiff-haired on the underside. The hair is colorless. The 5 petals are 1 to 2 × 0.5 to 1 millimeter in size. The nectar scales are hairless. The head of the achenes is 3 to 7 × 3 to 5 millimeters in size and spherical to ovoid. The achenes are 1.5 to 2 × 1.4 to 1.8 millimeters in size and hairless. The beak is 0.6 to 1 millimeter in size, slender and strongly curved.
The number of chromosomes is 2n = 16.
The species blooms from April to July.
Occurrence
Ranunculus allegheniensis is found in Connecticut, Kentucky, Maryland, Massachusetts, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, Tennessee, Vermont, Virginia, and West Virginia. The species grows in forests and pastures at altitudes from 0 to 1100 meters.
Systematics
Ranunculus allegheniensis was first described by Nathaniel Lord Britton in 1895 .
supporting documents
- Alan T. Whittemore: Ranunculus allegheniensis . In: Flora of North America . Volume 3 ( online ).
Web links
- Distribution map of Ranunculus allegheniensis in the Flora of North America