Arctostaphylos myrtifolia
Common Name: Ione manzanita
Family: Ericaceae
Element Code: PDERI04240
Full Name: Arctostaphylos myrtifolia Parry

2006 Steve Matson
Biology Glossary
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 15
  • Element Occurrence Ranks:
    A B C D X U
    2 6 0 0 0 7
  • Population Status:
    >20 yrs
    <=20 yrs
    8 7
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    15 0 0
Notes Glossary
  • Threatened by erosion, mining, development and fungal infection. Protected in part at Ione Manzanita ACEC (BLM) and Apricum Hill ER (DFG), both in AMA Co. See Pittonia 1:34 (1887) for original description, Ecology 45(4):792-808 (1964) for ecological discussion, and Changing Seasons 1(4):4-19 (1982) for species account.
  • To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
  • Date Added: 1974-01-01
  • Last Update: 2010-03-15
Location Glossary
  • Elevation: 60 - 580 meters
  • California Endemic: yes
  • States: California
  • California Counties and Islands:   name (code)
    Amador (AMA),  Calaveras (CAL)
  • Quads:   name (DWR code) USGS code
    Calaveritas (476A) 38120B5,  San Andreas (476B) 38120B6,  Valley Springs (477A) 38120B7,  Wallace (477B) 38120B8,  Mokelumne Hill (493C) 38120C6,  Irish Hill (494B) 38120D8,  Ione (494C) 38120C8,  Jackson (494D) 38120C7,  Carbondale (495A) 38121D1
  • Notes:
      Definitions of codes preceding a county and/or quad:
      * Presumed extirpated
      ? Uncertain about distribution or identity
      ?* Uncertain about distribution, but presumed extirpated if once present
      (?) Occurrence confirmed, but possibly extirpated
      Species may be present in other areas where conditions are favorable.
Presumed Extant Presumed Extirpated or Unknown 28
Links to Leading Resources of Taxon Information
Suggested Citation
CNPS, Rare Plant Program. . Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society, Sacramento, CA. Website [accessed ].

38120B5=Calaveritas (476A) 38120B5;38120B6=San Andreas (476B) 38120B6;38120B7=Valley Springs (477A) 38120B7;38120B8=Wallace (477B) 38120B8;38120C6=Mokelumne Hill (493C) 38120C6;38120D8=Irish Hill (494B) 38120D8;38120C8=Ione (494C) 38120C8;38120C7=Jackson (494D) 38120C7;38121D1=Carbondale (495A) 38121D1