bearberry

(Arctostaphylos uva-ursi)

               
Conservation Status

IUCN Red List

not listed

Xxxxxxxxxxx

 

NatureServe

N5 - Secure

SNR - Unranked

Minnesota

not listed

Wetland
Indicator
Status

Great Plains

UPL - Obligate upland

Midwest

UPL - Obligate upland

Northcentral & Northeast

UPL - Obligate upland

Nativity

Native

Photo by Luciearl
Occurrence

Common

Habitat

Dry. Open areas of forests, sand dunes, old fields, and urban areas. Full or partial sun. Acidic rocky soil or sand.

Flowering

Early May to early June

 
Flower Color

White

 
Height

2 to 8

 
 
Identification

Bearberry is a low growing, woody, evergreen shrub. It is native to Europe, Asia, and North America. In Minnesota it is fairly common in the north, uncommon in the central, metro, and southeast regions, and absent from the southwest region. It is found in open areas of forests, sand dunes, old fields, and urban areas. It grows in dry sites under full sun on acidic rocky soil and on sand.

Bearberry is a perennial shrub that rises from woody roots. The stem is branched, is up to 40 (1 m) long, and lies flat on the ground with only the tip ascending (decumbent). The branches are erect or curve up from the base (ascending). Where the stem and branches touch the ground it forms roots and often creates a new plant (layering). This is the plant’s primary means of reproduction. It often forms mats up to 40 (1 m) wide that are clones of a single plant.

Young stems and branches are erect and 2 to 8 (5 to 20 cm) tall. They are whitish-green to red or brown, round in cross section, and hairy. The hairs may be long, short, glandular, non-glandular, or a combination of these. Older stems are woody and covered with brown bark that eventually peels or flakes. After two or three years the branches become decumbent and may root and produce a new plant where they touch the ground.

The leaves are alternate and evergreen, lasting up to two years. They are on 116 to (2 to 4 mm) long leaf stalks. The leaf blades are thick, leathery, inversely lance-shaped or inversely egg-shaped (widest toward the tip), to 1 (10 to 25 mm) long, and 316 to (5 to1 5 mm) wide. They are wedge shaped at the base and rounded at the tip. They do not partly surround (clasp) the stem at the base. The upper surface is dark green, shiny, and hairless. The lower surface is medium green, dull, and usually hairless, sometimes sparsely hairy. The margins are untoothed. The leaves turn bright red in the fall.

The inflorescence is a short, congested, usually unbranched cluster (raceme) of 2 to 15 flowers at the end of the previous year’s twigs. Sometimes the cluster has one branch. Each flower droops downward on a hairless, 116 to (2 to 4 mm) long stalk (pedicel).

The flowers are urn shaped and about ¼ long. There are 5 outer floral leaves (sepals), 5 petals, 10 stamens, and 1 style. The sepals are light green to red, egg-shaped, and 132 to 116 (1 to 1.5 mm) long. The petals are mostly white, pinkish toward the tip. They are fused into an to ¼ (4.5 to 6.5 mm) long, urn-shaped tube, then separated at the tip into 5 rounded, less than 132 (1.0 mm) long lobes. The stamens and the style do not project beyond the tube.

The fruit is a red, hairless, globe-shaped, ¼ to ½ (6 to 12 mm) in diameter drupe with 5 nutlets. It is edible but dry, mealy, and tasteless.

 
Similar
Species

 

 
Distribution Distribution Map  

Sources: 2, 3, 4, 5, 7, 8, 24, 28, 29, 30.

 
Comments

 

 
Taxonomy

Family:

Ericaceae (heath)

 

Subfamily:

Arbutoideae (madrones, bearberries, and allies)

 

Genus:

Arctostaphylos (bearberries and manzanitas)

 
Subordinate Taxa

Many subspecies and varieties have been described based on the on the length of hairs and the presence or absence of glandular hairs on young twigs. None of the subspecies or varieties are currently recognized.

 
Synonyms

Arctostaphylos adenotricha

Arctostaphylos uva-ursi ssp. adenotricha

Arctostaphylos uva-ursi ssp. coactilis

Arctostaphylos uva-ursi ssp. longipilosa

Arctostaphylos uva-ursi ssp. monoensis

Arctostaphylos uva-ursi ssp. stipitata

Arctostaphylos uva-ursi var. adenotricha

Arctostaphylos uva-ursi var. coactilis

 

Arctostaphylos uva-ursi var. leobreweri

Arctostaphylos uva-ursi var. marinensis

Arctostaphylos uva-ursi var. monoensis

Arctostaphylos uva-ursi var. pacifica

Arctostaphylos uva-ursi var. stipitata

Arctostaphylos uva-ursi var. suborbiculata

Uva-Ursi uva-ursi

 
Common
Names

bear-grape

bearberry

bearberry manzanita

hog-cranberry

kinnikinnick

 

mealberry

mountain-box

sandberry

upland-cranberry

uva-ursi

 

 

 

 

 

 

 

 

 

Glossary

Ascending

Curving upward from the base.

 

Decumbent

Reclining on the ground but with the tip ascending.

 

Drupe

A fleshy fruit with usually a single hard, stone-like core, like a cherry or peach; a stone fruit.

 

Layering

A method of propagation where a stem or branch comes into permanent contact with the soil, sprouts roots, and then detaches from the main plant.

 

Pedicel

In plants: the stalk of a single flower in a cluster of flowers. In Hymenoptera and Araneae: the narrow stalk connecting the thorax to the abdomen.

 

Raceme

An unbranched, elongated inflorescence with stalked flowers. The flowers mature from the bottom up.

       
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  bearberry    
       
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Other Videos
 
  kinnikinnick - Arctostaphylos uva-ursi. Identification and characteristics.
Coastal Plants of BC - UBC Forestry
 
   
 
About

May 29, 2018

Coastal Indicator Plants of British Columbia.

kinnikinnick - Arctostaphylos uva-ursi.

University of British Columbia - Faculty of Forestry.

Illustration Credit: Hitchcock, C. Leo, and Arthur Cronquist. Flora of the Pacific Northwest: An Illustrated Manual © 1973. Reprinted with permission of the University of Washington Press.

   
       
  Arctostaphylos uva-ursi, Ericaceae (kinnikinnick, bearberry)
MHCC Dendrology
 
   
 
About

Sep 24, 2020

Welcome to Into the Forest: Tree and Shrub Identification with Pualani Derman, Instructor of Natural Resources Technology at Mt. Hood Community College. This video introduces you to Arctostaphylos uva-ursi (kinnikinnick, bearberry).

This video is provided as part of a series for F141 Tree and Shrub Identification. This field-based course focuses on the identification, classification and distribution of key trees and shrubs of the Pacific Northwest as well as major tree species and forest types of North America. The course emphasizes botanical nomenclature and field identification using plant keys. This class introduces ranges, habitats, uses and silvical characteristics of key plant species.

Find out more about the MHCC Natural Resources Technology program at https://www.mhcc.edu/NRT

   
       

 

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Luciearl
9/19/2020

Location: Cass County

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Created: 10/20/2020

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