Turritis glabra (Tower Mustard) - photos and description




Pods slightly elevated to perpendicular to the stem

Pods more or less circular in cross section

Basal leaf in above photo

Stem leaves with a diamond shaped base

General: Biennial plants with stout stems. The stems are glabrous towards the top, hirsute below.

Flowers: Flowers small, racemose, have four petals, are white with purple colouring at the tips. We measured flowers at 12 mm long and 6 mm wide.

Fruit: Narrow, usually straight, we measured a fruit at 31 mm long by 1 mm wide.

Leaves: Basal leaves with petioles, oblanceolate, 2 cm long including petiole and 6 mm wide. Basal leaves are grey with appressed hairs. Stem leaves clasping, elliptical to ovate, have a diamond-shaped base, measured at 15 mm long and 5 mm wide.

Height: Height listed in Budd's Flora to 60 cm, we measured plants to 20 cm tall.

Habitat: Cliffs, thickets, woods, and fields.

Abundance: Listed as fairly common in Checklist of the Vascular Plants of Saskatchewan.

Origin: Native.

Synonym: Listed in many of the field guides we use as Arabis glabra.

When and where photographed: Photos were taken May 7th and May 17th on a rocky slope in the Cypress Hills 400 km southwest of our home in Regina, SK.