Arctostaphylos myrtifolia

Taxobox
name = "Arctostaphylos myrtifolia"


regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Ericales
familia = Ericaceae
genus = "Arctostaphylos"
species = "A. myrtifolia"
binomial = "Arctostaphylos myrtifolia"
binomial_authority = Parry

"Arctostaphylos myrtifolia" is a species of manzanita known by the common name Ione manzanita. It is endemic to the Sierra Nevada foothills of California. It grows in the chaparral and woodland on a distinctive acidic soil series in western Amador and Calaveras Counties. This is a red-barked, bristly shrub reaching just over a meter in maximum height. The small bright green leaves are coated in tiny glandular hairs and are shiny but rough in texture. They are less than 2 centimeters long. The inflorescence 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. [Swiecki, T. J. and E. A. Bernhardt. [http://phytosphere.com/publications/ionemanzdis.htm Diseases threaten the survival of Ione manzanita ("Arctostaphylos myrtifolia").] "Phytosphere Research" March 10, 2003.]

References

External links

* [http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?3449,3454,3506 Jepson Manual Treatment]
* [http://plants.usda.gov/java/profile?symbol=ARMY USDA Plants Profile]
* [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Arctostaphylos+myrtifolia Photo gallery]