Difference between revisions of "Arctostaphylos uva-ursi"

From Puget Prairie Plants
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| name = Arctostaphylos uva-ursi| image = ARUV1.png
| image =  
| image_alt = Arctostaphylos uva-ursi
| image_caption =  
| image_caption = Arctostaphylos uva-ursi
| name = '''''Arctostaphylos uva-ursi'''''
| regnum = [[Plant]]ae
| regnum = [[Plant]]ae
| subregnum = Tracheobionta
| subregnum = Tracheobionta
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| subphylum= Magnoliophyta
| subphylum= Magnoliophyta
| classis = Magnoliopsida
| classis = Magnoliopsida
| subclassis = Asteridae
| subclassis = Asteranae
| ordo = Ericales
| ordo = Ericales
| familia = ericaceae   
| familia = Ericaceae
| genus = '' Arctostaphylos''
| genus = '''''Arctostaphylos''''' Adans.
| species = '''''uva-ursi''''
| species = '''''Arctostaphylos uva-ursi''''' (L.) Spreng
| synonyms = '' uva-ursi''
| subspecies =

Revision as of 20:24, 29 June 2020

  • Latin Name: Arctostaphylos uva-ursi
  • Family: Ericaceae
  • Common Names: red bearberry, kinnikinnik
  • Synonyms/Misapplications: Arbutus uva-ursi
  • Codon: ARCUVA
Arctostaphylos uva-ursi
Scientific classification
Kingdom: Plantae
Subkingdom: Tracheobionta
Phylum: Spermatophyta
Subphylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Asteranae
Order: Ericales
Family: Ericaceae
Genus: Arctostaphylos Adans.
Species: Arctostaphylos uva-ursi (L.) Spreng


General: Shrub; stems trailing across ground, less than 2 dm tall. Leaves: Alternate, 1-3 cm long, dark green, leathery, rounded at tip. Flowers: Light pink urn-shaped flowers in small clusters near tips of stems. Fruit: Bright red round berries 7-10 mm in diameter.

Prostrate shrub with somewhat stoloniferous rooting stems sometimes forming mats several meters wide; bark reddish to brownish, peeling off; stems ascending at the tip, 5-15 cm tall, minutely hairy, sometimes glandular. Leaves: Alternate, evergreen, leathery, egg- to spoon-shaped, 1-3 cm long, 0.3-1.2 cm wide, rounded at tip, rarely pointed, narrowed basally; entire, glabrous to minutely hairy especially on the margins and midrib, dark green above, paler below; stalks 2-5 mm long. Flowers: several in few-flowered terminal clusters; flower stalks 2-5 mm long, straight or curved, borne in the axils of hairy bracts; corollas pinkish-white, urn-shaped, 4-6 mm long, five lobed; clayces 1-1.5 mm long. Berries, bright red, 5-10 mm wide ([1]).

Bloom Period

April - June


Alaska south to California and New Mexico, east to the Atlantic Coast; also in Eurasia.


Ecological Setting-Coastal bluffs and prairies, rocky balds, dry subalpine meadows, and dry coniferous forest. Soil Texture-Medium and coarse textured soils Nutrients-Nitrogen poor soils ([2]). Soil Reaction / Salinity-5.5-8.0 pH – medium salinity Moisture Regime Low moisture use – high drought tolerance Shade Tolerance Intermediate shade tolerance Successional Status-Common in open canopy in young seral lodgepole pine forests ([3]).




Arctostaphylos uva-ursi

Seed sample from: 2009

Average Measurement: 3.9 x 2.3 x 1.8

Measurement Range: L: 3.75 - 4, W: 2.1 - 2.5, D: 1.5 - 2.25


Shape: Fruits segmented with seeds like an orange. Individual seeds are orange segment shaped.

Color: Seeds brown. Hilum is a small brown dot on the ridge where the two flat planes of the segment come together.

Surface: Seed mostly smooth. Rounded surface of seed is ridged. It has a slight sheen on the flat planes.

Latitudinal Cross Section: triangular ARUV lat.png

Longitudinal Cross Section: elliptical ARUV long.png

Basic Explanations and Assumptions:

The dimensions for the seeds are length x width x depth. The location of the hilum is used as the base of the seed, and the length is measured from hilum to the opposite apex. Where a style is present, the length is measured from the hilum to the bottom of the style. Width is measured at a right angle to the length at the widest part. Depth is measured at a right angle to the intersection of height and width lines.

Measurements included are the mean average for each measurement of ten separate seeds.

All measurements in millimeters unless otherwise noted.

Photo Gallery


  1. Douglas et al., 1999
  2. Klinka et al., 1989
  3. Klinka et al., 1989