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Hairy Buttercup

Ranunculus sardous

A field-guide profile of Hairy Buttercup, covering recognition, range context, soil ecology, community discovery, and source-backed cautions.

  • annual or biennial buttercup
  • native from the Canary Islands, North Africa, and Europe to the western Caucasus, introduced in many temperate regions
  • Hairy Buttercup flashes polished yellow petals while the green sepals tuck down behind the bloom.
Hairy Buttercup showing shiny yellow petals.
Image: sonnia hill · CC BY 2.0

At a glance

  • Typeannual or biennial buttercup
  • Rangenative from the Canary Islands, North Africa, and Europe to the western Caucasus, introduced in many temperate regions
  • Field markshiny yellow petals
  • SafetyObserve without treating this page as use advice
Range & community finds

Where it grows in the wild

Hairy Buttercup is treated here with conservative range language: native from the Canary Islands, North Africa, and Europe to the western Caucasus, introduced in many temperate regions. The public map shows reported observations and does not claim to be a complete habitat map.14

Field marks

How to recognize it

Use several traits together before trusting a quick name match.

Shiny Yellow Petals

Shiny Yellow Petals helps separate Hairy Buttercup from similar plants when it is checked with the whole plant and setting.

Sepals Bent Sharply Downward

Sepals Bent Sharply Downward helps separate Hairy Buttercup from similar plants when it is checked with the whole plant and setting.

Hairy Stems And Leaves

Hairy Stems And Leaves helps separate Hairy Buttercup from similar plants when it is checked with the whole plant and setting.

Don't mix it up

Lookalikes & how to tell them apart

Look-alikes are common enough that one trait is rarely enough.

Creeping buttercup

Compare leaves, flowers, fruits, and habitat together.. This similar plant can share part of the same visual vocabulary, so check multiple field marks before treating the identification as settled.

Bulbous buttercup

Compare leaves, flowers, fruits, and habitat together.. This similar plant can share part of the same visual vocabulary, so check multiple field marks before treating the identification as settled.

The story

Folded sepals flashing a pasture warning

Hairy Buttercup shines from thin turf with polished yellow petals, while the green sepals bend down behind the flower like a collar folded away. Hairy Buttercup flashes polished yellow petals while the green sepals tuck down behind the bloom.

The first community record in this profile began in AR, United States, on 2026-06-21. That record gives the page a human starting point without turning the plant into a private location. From there, the eye can move back to the plant itself: shiny yellow petals, sepals bent sharply downward, hairy stems and leaves. Those details matter because quick green shapes can mislead, especially around Creeping buttercup and Bulbous buttercup.

Range adds another layer to the story. Hairy Buttercup is described here as native from the Canary Islands, North Africa, and Europe to the western Caucasus, introduced in many temperate regions. The map on this page is an observation map, so it shows reported records rather than a promise that the plant is absent anywhere else. For a field reader, that is useful humility. It says, in effect, that a plant has both a history and a pattern of being noticed.

A second look often changes the scale of the plant. What first appears as one weed, one flower, or one clump becomes a set of choices made by the site: where water lingers, where bare soil opened, where insects can land, and where seeds can leave. That is why the profile keeps returning to leaves, flowers, fruits, and soil together. The name is useful, but the setting explains why the plant is there at all.

The soil gives the plant its working stage. Sparse wet pasture, lawns, meadows, and disturbed soil can give this cool-season annual room to establish. The plant often appears where ground cover has opened, turning thin turf into a yellow warning signal for grazers. In that sense, Hairy Buttercup is a glossy pasture warning with folded sepals: visible aboveground, but shaped by moisture, disturbance, light, roots, and the small animals or people that move seeds through a place.

There is also a caution built into the profile. Buttercups contain irritant compounds and livestock cautions are real; this page gives cautionary context, not handling or pasture advice. That keeps the page useful for families and students without turning recognition into permission. Notice the plant, photograph it, and compare several features before naming it.

In the field, pause at the edge rather than grabbing the first close-up. Look for shiny yellow petals, then check sepals bent sharply downward and hairy stems and leaves. Step back and ask what the ground is doing: wet or dry, shaded or open, compacted or loose, crowded or newly disturbed. A small plant often tells the larger story of the path, pasture, woodland edge, or ditch around it.

Ecology

Its place in the ecological web

The strongest profile of Hairy Buttercup includes the organisms and ground conditions around it.

Ecological web

Seasonal visitors and seed movement

The plant often appears where ground cover has opened, turning thin turf into a yellow warning signal for grazers.12

Soil

Soil & ground connection

Sparse wet pasture, lawns, meadows, and disturbed soil can give this cool-season annual room to establish.2

Timing

When to look

Hairy Buttercup is most visible across March, April, May, June in much of its range, with local timing shifting by climate and site.2

Leaves
Flowers
  • Peak bloom
  • Fading & dried heads
  • Leaves out
In Leafari

Found one? Keep a field journal

Save this species to your journal, earn its badge, and see community discoveries on an approximate, privacy-safe map.

  1. 1First community record is shown at state or province scale.
  2. 2Exact discovery coordinates and private photos stay out of public content.
Hairy Buttercup community badge art.

Hairy Buttercup

Earned when you identify this species in Leafari.

In the Leafari community

1Total finds logged
1Explorers journaled it

First found in AR, United States, by Clever-Collector-2

References

Sources

Key facts and claims trace back to a named reference. Superscript numbers in the text link here.

  1. Plants of the World Online: Ranunculus sardous
  2. NC State Extension: Ranunculus sardous
  3. University of Illinois Extension: Buttercup Management
  4. GBIF species match: Ranunculus sardous
  5. Leafari app records product-snapshot