Rock buttercup
Ranunculus micranthus Nutt.
Images
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Morphology
- Stem
- Erect, lower portion soft-hairy.
- Leaves
- Basal leaves persistent, circular or mostly egg-shaped in outline, .4 to 1.2 inch long and wide, sparsely soft-hairy; some blades deeply 3-5-lobed; margins scalloped; bases cut straight across to broadly rounded; tips rounded-blunt; stem leaves deeply divided, sessile to nearly sessile, often 3-5-cleft; segments varying; upper stem leaves reduced to bracts above.
- Inflorescence
- Flowers borne singly on terminal and axillary stalks; 8-35-flowered.
- Flower
- Stalks glabrous or soft-hairy; sepals 5, 1/12 to 1/6 inch long, greenish-yellow, back side glabrous or pubescent; petals 5, inconspicuous, shorter than sepals, yellow, fading white.
- Fruit
- Achenes, 10-40, tiny, glabrous, dull, in spherical to cylindrical heads.
Ecology
- Habitat
- Open or rocky woods, shaded bluff ledges, meadows, clearings; moist or dry rocky or alluvial soils.
- Distribution
- Easternmost tier of counties in Kansas
Additional Notes
Comments
Similar to early wood buttercup, Ranunculus abortivus, but leaves, sepals, and fruiting heads smaller.
Quick Facts
- Plant Type
- Wildflower
- Family
- Ranunculaceae - Buttercup Family
- Life Span
- Perennial
- Height
- 4.4 to 16 inches tall
- Last Updated
- 2010-03-17
Color Groups
Yellow Wildflowers
Flowering Period
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Blooms: April, May