white avens

(Geum canadense)

Conservation Status
white avens
Photo by Luciearl
  IUCN Red List

not listed


N5 - Secure

SNR - Unranked


not listed

Wetland Indicator Status
  Great Plains

FAC - Facultative


FAC - Facultative

  Northcentral & Northeast

FAC - Facultative


White avens is a 16 to 40 tall, erect, perennial forb that rises on one or more stems from a small caudex and rhizomes. It sometimes forms colonies.

The stems are erect, slender, round, and green. They are hairless or sparsely hairy near the base, and densely covered with short, velvety hairs and scattered long hairs toward the top.

In the spring it appears as a rosette of basal leaves. The basal leaves are long-stalked and compound. They are usually palmately divided into 3 leaflets (ternate), sometimes pinnately divided into 5 leaflets. The terminal leaflet is broadly egg-shaped, up to 4 long and 3 wide, and may have one or two shallow lobes on each side. It is tapered at the base and tapers to a point at the tip. The upper surface is sparsely covered with appressed hairs. The lower surface is hairy. The margins are coarsely toothed with sharp, forward pointing teeth. The lateral leaflets are similar but narrower and slightly smaller.

The stem leaves are alternate. Lower stem leaves are short-stalked, are divided into 3 leaflets, and are otherwise similar to basal leaves. The leaflets are lance-shaped or diamond-shaped (rhombic). At base of the compound leaf there is a pair of leaf-like appendages (stipules). The stipules are egg-shaped, to ¾ long, usually toothed, and sometimes shallowly lobed. Stem leaves become shorter stalked, smaller, and less divided as they ascend the stem. Upper stem leaves are undivided and almost stalkless.

The inflorescence is a single flower or a loose cluster of a few flowers at the end of the stem and rising from upper leaf axils. It is on a stalk that is up to 2 long; is densely covered with short, velvety hairs; and sometimes has a few long, silky hairs.

The flowers are about ½ wide. There are 5 sepals, 5 petals, numerous stamens, and 50 to 80 styles. The sepals are green, lance-shaped, pointed, about 3 16 long, and about 116 wide at the base. They spread outwards or bend backwards. The petals are white, about ¼ long, and about wide. They are distinctly narrowed at the base (clawed), well separated, and widely spreading or somewhat bent backward. They are as long or longer than the sepals. There is a raised structure (hypanthium) in the center of the flower. The stamens are arranged in a ring at the base of the hypanthium. They have white stalks (filaments) and white anthers that soon turn brown.

The fruit is a bristly, spherical cluster of 30 to 60 seedcases (achenes). It is green at first, eventually turning brown, and is ½ to ¾ in diameter when measured to the tips of the bristles. The sepals persist in fruit and are bent backwards. The bristles are the styles that have persisted in fruit, are about ¼ long, and are hooked at the tip. The hooked tip is a 116 long terminal segment that eventually falls off. The fruit disperses by clinging to fur of passing animals or legs of passing hikers.




16 to 40


Flower Color




Similar Species


Large-leaved avens (Geum macrophyllum var. perincisum) lower stem is densely hairy. The terminal segment of basal leaves is round to kidney-shaped and larger, 2 to 4¾ wide. The lateral leaflets are much smaller. The petals are yellow.

Yellow avens (Geum aleppicum) stems are stout. The lower stem is densely hairy. Lower stem leaves are pinnately divided into 5 or more leaflets. There are often minute, minor leaflets between the principal leaflets. The petals are yellow. It is found in wet areas.


Dry to moist. Woods, disturbed areas. Light shade or partial sun.




May to June


Pests and Diseases






Distribution Map



2, 3, 4, 5, 7, 24, 28, 29, 30.









  Kingdom Plantae (green algae and land plants)  
  Subkingdom Viridiplantae (green plants)  
  Infrakingdom Streptophyta (land plants and green algae)  
  Superdivision Embryophyta (land plants)  
  Division Tracheophyta (vascular plants)  
  Subdivision Spermatophytina (seed plants)  
  Class Magnoliopsida (flowering plants)  
  Superorder Rosanae  


Rosales (roses, elms, figs, and allies)  


Rosaceae (rose)  
  Subfamily Rosoideae (brambles, roses, strawberries, and allies)  
  Tribe Colurieae (avens)  


Geum (avens)  

Subordinate Taxa






Geum album

Geum camporum

Geum canadense

Geum canadense var. brevipes

Geum canadense var. camporum

Geum canadense var. canadense

Geum canadense var. grimesii

Geum canadense var. texanum


Common Names

  white avens  











A dry, one-chambered, single-seeded fruit, formed from a single carpel, with the seed attached to the membranous outer layer (wall) only by the seed stalk; the wall, formed entirely from the wall of the superior ovary, does not split open at maturity, but relies on decay or predation to release the contents.



The upper angle where a branch, stem, leaf stalk, or vein diverges.



A short, thickened, woody, persistent enlargement of the stem, at or below ground level, used for water storage.



A stalk-like narrowed base of some petals and sepals.


Compound leaf

A leaf that is divided into leaflets, each leaflet having the general appearance of a leaf, with all leaflets attached to a single leaf stem.



On plants: The thread-like stalk of a stamen which supports the anther. On Lepidoptera: One of a pair of long, thin, fleshy extensions extending from the thorax, and sometimes also from the abdomen, of a caterpillar.



A cup-like tubular structure of a flower formed from the fused bases of sepals, petals, and stamens, that surrounds the pistil. Its presence is diagnostic of many families, including Rosaceae, Ribes, and Fabaceae.



Similar to a hand. Having more than three lobes or leaflets that radiate from a single point at the base of the leaf.



On a compound leaf, having the leaflets arranged on opposite sides of a common stalk. On a bryophyte, having branches evenly arranged on opposite sides of a stem.



A horizontal, usually underground stem. It serves as a reproductive structure, producing roots below and shoots above at the nodes.



An outer floral leaf, usually green but sometimes colored, at the base of a flower.



A small, leaf-like, scale-like, glandular, or rarely spiny appendage found at the base of a leaf stalk, usually occurring in pairs and usually dropping soon.



Refers to leaves that are divided into three leaflets or sections.

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Fruiting Head

    white avens      



  White Avens (Geum canadense)
Andree Reno Sanborn
  White Avens (Geum canadense)  
  Geum canadense WOOD AVENS
Frank Mayfield
  Geum canadense WOOD AVENS  



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Location: Fairview Twp, Cass County

white avens  
MinnesotaSeasons.com Sightings

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