Cypripedium acaule (Stemless / Pink Lady's Slipper) - photos and description

Cypripedium acaule

Cypripedium acaule

Cypripedium acaule
15 cm ruler for scale

Cypripedium acaule

Cypripedium acaule

Cypripedium acaule

Cypripedium acaule

General: Small orchid with stout stems and two opposite, basal leaves. Stems pubescent.

Had to travel 650 km north of our home in Regina, SK, to photograph this plant - that's its southern most range in our province. I've seen them grwoing near La Ronge, Beauval, and points north.

Flowers: Flowers are showy, solitary, and nodding. The pouch-like lower lip is pinkish-red in colour, with a cleft running vertically in the middle. Flower to 4 cm long. The lateral petals and are reddish-brown and slightly twisted. The sepals are also reddish-brown, the lateral sepals are fused together under the lower lip.

Leaves: Leaves oval to elliptical, we measured a leaf at 12 cm long and 5 cm wide (pressed flat). Leaves pubescent.

Height: Height listed in Budd's Flora to 40 cm tall, I've measured them to 30 cm in height, more typically 15 to 25 cm tall.

Habitat: Rocky outcrops in jack pine woods.

Abundance: Common. However this is a species only of the northern boreal forest.

Origin: Native.

When and where photographed: Above photos taken June 26th, jack pine woods, growing on rocky outcrops, La Ronge, 650 km north of our home in Regina, SK.