Wood-sorrel, yellow, Oxalis stricta

Life Cycle

Perennial

Propagation

Reproducing mainly by seed.

Stems

The stems sparse to abundant short hairs.

Leaves

Bright green in colour. Each leaf compound and consisting of 3 heart -shaped leaflets attached by their pointed ends to the tip of the usually erect petiole and either hanging down or standing out horizontally in 3 directions.

Flowers and Fruit

Flowers are bright yellow 4-10 mm across with 5 uniformly shaped petals and 10-15 stamens. The seedpods are 1-2.5 cm long, slender containing several seeds.

Habitat

Occasional weeds in lawns, gardens and waste areas throughout Ontario.

Distinguishing Features

Leaves that contain three heart-shaped leaflets, bright yellow flowers and a characteristic sour taste when the leaves, which contain oxalic acid, are consumed.


Figure #1.

General depiction of an Oxalis plant species


Figure #2.

Seedling plant


Figure #3.

Hairy and red stem of European wood-sorrel


Figure #4.

Bright green leaves


Figure #5.

Yellow flower


Figure #6.

Seedpod


Figure #7.

Mature plant