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Ione Manzanita
Arctostaphylos myrtifolia
  
About Ione Manzanita (Arctostaphylos myrtifolia) 1 Nurseries Carry This Plant Arctostaphylos myrtifolia is a species in the Ericaceae (Heath) family known by the common name Ione Manzanita. It is a rare species, endemic to the Sierra Nevada foothills of California where it grows in the chaparral and woodland on a distinctive acidic soil series in western Amador and Calaveras Counties. For this reason it is included on CNPS list 1B.2 and is listed by the federal government as Threatened. This is a red-barked, bristly shrub reaching just over a meter in maximum height. The small bright green leaves are coated in tiny hairy hairs and are shiny but rough in texture. They are less than 2 centimeters long. The flower cluster is a raceme of urn-shaped manzanita flowers on bright red branches. The fruit is a cylindrical drupe only a few millimeters long. A major threat to this rare endemic plant is a pair of fungal diseases. A branch canker caused by species of Fusicoccum, including F. aesculi, causes some mortality, and root and crown rot caused by Phytophthora cinnamomi has destroyed entire stands of the manzanita and prevented its regrowth in patches of infested soil.
Plant Description
Plant Type
Plant Type
Shrub

Size
Size
2 - 4 ft tall

Dormancy
Dormancy
Evergreen

Flower Color
Flower Color
Pink, White, Red

Flowering Season
Flowering Season
Winter, Spring

Wildlife Supported
 


 

Landscaping Information
Sun
Sun
Full Sun, Part Shade

Moisture
Moisture
Low

Nurseries
Nurseries

Ease of Care
Ease of Care
Moderately Easy

Soil Drainage
Soil Drainage
Fast, Medium, Slow

Soil Description
Soil Description
This plant requires sandy-clay soil. often underlain by hardpan

Common uses
Common uses
Hummingbird Gardens, Bee Gardens

Natural Setting
Site Type
Site Type
Acid sand, clay soils

Climate
Climate
Annual Precipitation: 16.9" - 53.7", Summer Precipitation: 0.26" - 2.21", Coldest Month: 32.4" - 49.4", Hottest Month: 57.5" - 75.0", Humidity: 0.70" - 22.85", Elevation: 76" - 6884"


Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora


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