Ranunculus abortivus (Smooth-Leaved Buttercup) - photos and description


Two plants side by side in above photo.


Sepals reflexed, often purple-tinged.


Stem leaf in above photo.


Basal leaf in above photo

General: Erect plants branching towards the top, having small yellow flowers. Stems pubescent.

Flowers: Flowers solitary, on peduncles from upper leaf axils, small, we measured a flower at 8 mm diameter, and petals to 3 mm long. Sepals are reflexed, often purple-tinged, we measured a sepal to 3 mm long.

Leaves: Basal leaves have long petioles, are orbicular to reniform, with a cordate base, crenate. Basal leaf highlighted in photo above was 26 mm long by 30 mm wide. Stem leaves are 3-5 parted into linear-lanceolate lobes. We measured the lobe from a large stem leaf at 37 mm long by 8 mm wide

Height: Height is listed in Budd's Flora to 50 cm, we measured plants to 28 cm.

Habitat: Open woods and wet meadows.

Abundance: Common, ranked as an S5 by the Saskatchewan Conservation Data Centre.

Origin: Native.

How to identify this species of Ranunculus: Basal leaves reniform in outline, more or less cordate at their base (Budd's Flora), petals about 2 mm (Taxonomic Reminder for Recognizing Saskatchewan Plants).

When and where photographed: Took the above photos May 30th, edge of a forest trail, Cypress Hills, about 400 km southwest of our home in Regina, SK.