Heracleum sphondylium ssp. montanum (Cow Parsnip) - photos and description

Heracleum sphondylium ssp. montanum

Heracleum sphondylium ssp. montanum

Heracleum sphondylium ssp. montanum

Heracleum sphondylium ssp. montanum

Heracleum sphondylium ssp. montanum

Heracleum sphondylium ssp. montanum

Heracleum sphondylium ssp. montanum

General: Coarse plant with huge leaves. Stems are pubescent at top and glabrous at bottom.

Flowers: Flowers are white in compound umbels; we measured a compound umbel at 22 cm wide, an umbel at 5 cm wide, and 1 flower at 14 mm wide. The entire compound umbel usually subtended by linear bracts, each umbel subtended by linear bracts. A bract was measured at 15 mm long by 1 mm wide. Flowers have an unpleasant aroma.

Leaves: Leaves trifoliate, leaflets are huge, deeply cleft and serrate. We measured a leaflet at 32 cm wide and 27 cm long. Leaves tomentose below are sparsely hairy above.

Height: Height listed in Budd's Flora to 250 cm, we measured plants to 163 cm tall.

Habitat: Shady, moist woodlands.

Abundance: Common.

Origin: Native.

Synonym: Listed in some of the field guides we use as Heracleum lanatum.

When and where photographed: These photos were taken August 2nd, swampy woods, boreal forest, about 300 km northeast of our home in Regina, SK.