Common Name: buttercup, bulbous
Species: Ranunculus bulbosus L.
Bayer Code: RANBU

Two of the common buttercups found in North Carolina are hairy buttercup and bulbous buttercup. Hairy buttercup appears to be predominant in the Piedmont and mountain regions, while bulbous buttercup is readily found in the Piedmont and Coastal Plain regions. Vegetative characteristics of bulbous buttercup are similar to those of hairy buttercup except for the bulb-like swelling at the base of the stem. This swelling is roundish and white, slightly flattened at the top and bottom. Smallflower buttercup is also found in North Carolina. Whereas bulbous and hairy buttercup have lobed leaves, most of the lower leaves of smallflower buttercup are unlobed.
bulbous buttercup
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bulbous buttercup seedling
bulbous buttercup
bulbous buttercup
bulbous buttercup, leaf venation
Growth Season winter annual weed OR perennial weed 
Growth Habit upright OR rosettemore prostrate in mowed turf situations
Leaflet Number one 
Leaf Margin lobeddivided into three lobes
Leaf Hairs upper/lower surfacedense hairs on upper surface
Leaf/Leaflet Shape oval/egg-shaped/elliptical 
Leaf Width 1/2 - 1 inch OR 1 - 2 inches 
Leaf Venation palmate 
Leaf Arrangement alternate 
Root Type bulbous 
Flower Color yellow