''Geum canadense'', the white avens, is a

plant Plants are the eukaryotes that form the Kingdom (biology), kingdom Plantae; they are predominantly Photosynthesis, photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with c ...

in the rose family,

Rosaceae Rosaceae (), the rose family, is a family of flowering plants that includes 4,828 known species in 91 genera. The name is derived from the type genus '' Rosa''. The family includes herbs, shrubs, and trees. Most species are deciduous, but som ...

. It is widespread across much of Canada, the United States, and Mexico. It readily hybridizes with the introduced ''

Geum urbanum ''Geum urbanum'', also known as wood avens, herb Bennet, colewort, clove root and St. Benedict's herb (Latin: ''herba benedicta''), is a perennial plant in the rose family (Rosaceae), which grows in shady places (such as woodland edges and near ...

''. The hybrid is named ''Geum'' × ''catlingii'' J.-P. Bernard & R. Gauthier.Bernard, J.-P. & R. Gauthier. 1986. Observations sur le ''Geum urbanum'' L. dans la région de Québec et description de deux hybrides. Le naturaliste canadien 113: 317-324

Description

''Geum canadense'' is a

herbaceous plant Herbaceous plants are vascular plants that have no persistent woody stems above ground. This broad category of plants includes many perennials, and nearly all annuals and biennials. Definitions of "herb" and "herbaceous" The fourth edition o ...

with basal leaves that have more than three leaflets and are arranged in a low rosette. Leaves above the basal rosette are alternate, with those placed just above the basal leaves typically trifoliate, and upper leaves usually

simple Simple or SIMPLE may refer to: *Simplicity, the state or quality of being simple Arts and entertainment * ''Simple'' (album), by Andy Yorke, 2008, and its title track * "Simple" (Florida Georgia Line song), 2018 * "Simple", a song by John ...

. These

cauline A leaf (: leaves) is a principal appendage of the stem of a vascular plant, usually borne laterally above ground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, fl ...

leaves are serrate. Basal leaves are a darker green and are often coarsely hairy compared to the lighter green and fine hairs found on upper leaves and stems. In milder climates the foliage is evergreen. Blooming occurs for one to two months in the summer; each flower has five white petals and five green sepals. Flowers are replaced by clusters of long, thin seeds each with a hook on one end that may catch on clothing or animal fur. The flowers resemble those of other members of the rose family such as blackberries and strawberries. The root system consists of a taproot and rhizomes. The plants prefer light shade or partial sun and moist to dry conditions. Somewhat unusually, they are resistant to the phytotoxins released by

black walnut ''Juglans nigra'', the eastern American black walnut, is a species of deciduous tree in the walnut family, Juglandaceae, native to central and eastern North America, growing mostly in riparian zones. Black walnut is susceptible to thousand can ...

trees and so can grow near such trees.

External links

References

{{taxonbar , from=Q5554832 canadense Flora of Northern America Plants described in 1773 Taxa named by Nikolaus Joseph von Jacquin