Hieracium umbellatum (Canada Hawkweed) - photos and description

Hieracium umbellatum

Hieracium umbellatum

Hieracium umbellatum

Hieracium umbellatum

Hieracium umbellatum
Black hairs on bracts

Hieracium umbellatum

Hieracium umbellatum

Hieracium umbellatum

General: Upright perennials with leafy stems, the lower stem with long hairs,  and short hairs on upper stem. Foliage exudes a milky sap when broken.

Flowers: In a loose corymbose cluster. Flowers ligulate, flower heads measured to 28 mm diameter. There are two rows of bracts of differing lengths. Bracts blackish green in colour, and have black hairs.

Leaves: Leaves all cauline, lower leaves with a few sharp teeth. Leaves reduced upwards. Leaves alternate, lanceolate, leaf highlighted in photo above was measured at 10.5 cm long and 1.5 cm wide. Lower stem with long hairs, short hairs on upper stem. Top of leaves with short hairs, leaf bottoms with longer hairs.

Height: Height listed in Budd's Flora to 100 cm, we measured plants to 78 cm tall.

Habitat: Dry woods.

Abundance: Common.

Origin: Native.

When and where photographed: The above photos were taken August 1st, forest roadside, Cypress Hills, 450 km south west of our home in Regina, SK.