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Its specific name uva-ursi means "grape of the bear" in Latin (ūva ursī), just like what the generic epithet Arctostaphylos means in Greek ("bear-grape").
Arctostaphylos uva-ursi is a plant species of the genus Arctostaphylos (manzanita). Its common names include kinnikinnick and pinemat manzanita, and it is one of several related species referred to as bearberry.
Arctostaphylos uva-ursi is a small procumbent woody groundcover shrub 5–30 cm high. The leaves are evergreen, remaining green for 1–3 years before falling. The fruit is a red berry.
The leaves are shiny, small, and feel thick and stiff. They are alternately arranged on the stems. Undersides of leaves are lighter green than on the tops. New stems can be red if the plant is in full sun, but are green in shadier areas. Older stems are brown. In spring, they have white or pink flowers.
Pure stands of Arctostaphylos uva-ursi can be extremely dense, with heights rarely taller than 6 inches. Erect branching twigs emerge from long flexible prostrate stems, which are produced by single roots. The trailing stems will layer, sending out small roots periodically. The finely textured velvety branches are initially white to pale green, becoming smooth and red-brown with maturity. The small solitary three-scaled buds are dark brown.
The simple leaves of this broadleaf evergreen are alternately arranged on branches. Each leaf is held by a twisted leaf stalk, vertically. The leathery dark green leaves are an inch long and have rounded tips tapering back to the base. In fall, the leaves begin changing from a dark green to a reddish-green to purple.
Terminal clusters of small urn-shaped flowers bloom from May to June. The perfect flowers are white to pink, and bear round, fleshy or mealy, bright red to pink fruits called drupes. This smooth, glossy skinned fruit will range from 1⁄4 to 1⁄2 inch in diameter. The fruit will persist on the plant into early winter. Each drupe contains 1 to 5 hard seeds, which need to be scarified and stratified prior to germination to reduce the seed coat and break embryo dormancy.
There is an average of 40,900 cleaned seeds per pound.
The distribution of Arctostaphylos uva-ursi is circumpolar, and it is widespread in northern latitudes, but confined to high altitudes further south:
in Europe, from Iceland and North Cape, Norway south to southern Spain (Sierra Nevada); central Italy (Apennines) and northern Greece (Pindus mountains);
in Asia from arctic Siberia south to Turkey, the Caucasus and the Himalaya;
in North America from arctic Alaska, Canada and Greenland, south to California, north coast, central High Sierra Nevada (above Convict Lake, Mono County, California), Central Coast, California, San Francisco Bay Area, to New Mexico in the Rocky Mountains; and the Appalachian Mountains in the northeast United States.
In some areas, the plant is endangered or has been extirpated from its native range. In other areas, such as the Cascade Range, it is abundant.
Arctostaphylos uva-ursi contains the glycoside arbutin.
Some constituents such as the hydroquinones are hepatotoxic and in cases of urinary tract infections, other treatment options are recommended.
Historically it was used by the Blackfoot as food, some say the fruit tastes bland and is mealy.
Bearberry is the main component in many traditional North American Native smoking mixes, known collectively as "kinnikinnick" (Algonquin for a mixture). Bearberry is used especially amongst western First Nations, often including other herbs and sometimes tobacco. Some historical reports indicate a "narcotic" or stimulant effect, but since it is almost always smoked with other herbs, including tobacco, it is not clear what psychotropic effects may be due to it alone. For a full discussion of Amerindian smoking mixtures see kinnikinnick.
There are several cultivars that are propagated for use as ornamental plants. It is an attractive evergreen plant in gardens, and it is also useful for controlling erosion. It is tolerant of sun and dry soils and is thus common groundcover in urban areas.
Fruit / Seed Dormancy and Treatment:
Seeds require an acid scarification treatment immerse in sulfuric acid for three to six hours. After scarification, warm stratification for 60 days followed by cold stratification for 60 days. Sow early in summer and mulch over winter (Berg, 1974).
|Organic Seeds :||Yes|
|Handpicked seeds||Handpicked seeds|
|Resistant to cold and frost :||Resistant to cold and frost : - 40° C|
|Manufacturer:||Manufacturer: Seeds Gallery|
|Fruit Weight :||0 - 5 g|