Viola sororia (Woolly Blue Violet) - photos and description

Viola sororia

Viola sororia
Leaves cordate to orbicular

Viola sororia
15 cm ruler for scale

Viola sororia
Leaf margins are hairy

Viola sororia
Young leaves with hairy petioles

Viola sororia
Petioles on older leaves are glabrous; above is from same plant as the hairy petiole shown on this page

Viola sororia

Viola sororia
Lateral petals only with hairs

Viola sororia

General: Stemless violet with light purple-blue flowers. Flower scapes at or below the level of the leaves.

Taxonomic key to Saskatchewan's Violets.

Flowers: Flowers solitary on scapes. We measured a flower at 18 mm in diameter. Spur was measured at 4 mm long and 3 mm wide, spur petal measured to 18 mm long.

Leaves: Leaves cordate to orbicular, leaf auricles broad. Leaves crenate (round-toothed) to dentate (saw-toothed). We measured a leaf at 5 cm in length and 4 cm wide. Leaf margins, undersides, and petioles slightly hairy. We observed that young leaves appeared quite hairy, while older leaves had lost their pubescence pretty much entirely.

Height: Leaves measured to 13 cm tall.

Habitat: Moist woodlands along the eastern fringe of the province.

Abundance: Extremely rare in Saskatchewan, listed as an S1 (as of 2019) by the Saskatchewan Conservation Data Centre.

Origin: Native.

Similar species: Some authorities list a similar species Viola septentrionalis. I spent an afternoon at the Fraser Herbarium at the University of Saskatchewan before our trip to Hudson Bay looking to photograph Saskatchewan's rare Violet species. I could not distinguish V. sororia specimens from V. septentrionalis in leaf shape, size, pubescence, nothing. ITIS (Integrated Taxonomic Information System) lists these 2 species together as V. sororia.

When and where photographed: Above photos taken June 3rd, Porcupine Hills Provincial Forest, about 400 km north east of our home in Regina, SK.