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UMass Extension Weed Herbarium
 

Common Name: smallflower buttercup, crowfoot, smooth-leaved crowfoot, kidney-leaved buttercup
Scientific Name: Ranunculus abortivus L.
Family Name: Ranunculaceae - Buttercup Family

Identification Notes:

life cycle – native winter annual, biennial or short-lived perennial, reproducing by seed

stems – upright, simple or sometimes multiple from base, branch above, smooth and hairless, sometimes pubescent, hollow growth habit 1, growth habit 2, growth habit 3

leaves – alternate, basal leaves round to heart or kidney-shaped with scalloped margins on long petioles, stem leaves deeply divided into 3 - 5 lobes and sessile, lobes narrowly oblong and toothed, all leaves bright green leaves 1, leaves 2, leaves 3, leaves 4

flowers – 5-petaled, pale yellow, somewhat inconspicuous, petal shorter than sepals, sepals down-turned; terminal, solitary on long stalks flowers 1, flowers 2, flowers 3, flowers 4

fruit –  achenes in oval clusters, short

Images:

Ranunculus abortivus thumbnail 1 Ranunculus abortivus thumbnail 2 Ranunculus abortivus thumbnail 3
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Ranunculus abortivus thumbnail 4 Ranunculus abortivus thumbnail 5 Ranunculus abortivus thumbnail 6 Ranunculus abortivus thumbnail 7
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Ranunculus abortivus thumbnail 8 Ranunculus abortivus thumbnail 1 Ranunculus abortivus thumbnail 10 Ranunculus abortivus thumbnail 11
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