Flower:

1 to a few flowers are at the end of branching stems at the top of the plant. Individual flowers are about ½ inch across with 5 yellow round to oval petals that may have a dull point or a small notch at the tip. There are numerous yellow-tipped stamens, that turn reddish brown with age, covering the greenish center. The 5 sharply pointed green sepals under the flower bend back away from the flower.

Leaves and stem:

There are a few to several long stemmed compound basal leaves with a large kidney-shaped leaflet, sometimes round or lobed, at the end and several small leaflets along the stem. Basal leaves can be 18 inches long, with the end leaflet to 7 inches long and wide.

The compound stem leaves are alternately attached, with the end leaflet divided into 3 pointed lobes. The end leaflet is to 4½ inches long and 3½ inches wide. There are 2 leaf-like appendages (stipules) attached to the main stem at the leaf joint. Stem leaves near the base of the plant have 1 or more additional pairs of smaller leaflets. All leaves are coarsely toothed and very hairy, and become progressively smaller as they ascend the stem. The main stem is covered in stiff hairs.

Fruit:

Fruit is a dry oval seed; the seed head is covered in hooks

Notes:

When I first came upon Large-leaf Avens, I thought it was a buttercup, but it does not have shiny petals as buttercups do. The compound leaves and stipules are also not traits of the buttercup family. The flowers, stem leaves and stipules are very much like Yellow Avens (G. aleppicum), but its basal leaves do not have the big round end leaflet.