Lysimachia thyrsiflora (Tufted Loosestrife) - photos and description

Lysimachia thyrsiflora
15 cm ruler for scale

Lysimachia thyrsiflora

Lysimachia thyrsiflora

Lysimachia thyrsiflora

Lysimachia thyrsiflora

General: Stout-stemmed perennials native to wetlands. Stems leafy, usually simple, and puberulent.

Flowers: Its flowers are small and yellow, and grow in spikes in leaf axils mid-stem, The spikes often in opposite pairs along the stem. We measured spikes to 2 cm long, and flowers to 5 mm in diameter. Pedicels puberulent.

Leaves: Leaves are linear-lanceolate, opposite, stalkless. Leaf featured in above photo was 9.5 cm long and 2 cm wide. We observed small hairs on the central nerve on leaf bottoms, while leaf tops are glabrous.

Height: Budd's Flora lists height to 100 cm, we measured plants to 52 cm tall.

Habitat: Marshes and other wet places in the parklands and boreal forest.

Abundance: Common.

Origin: Native.

When and where photographed: The above photos were taken July 8th, edge of wet black spruce woods, Boreal Forest, about 350 km north east of our home in Regina, SK.