Malacothamnus davidsonii
Common Name: Davidson's bush-mallow
Family: Malvaceae
Synonyms:
Element Code: PDMAL0Q040
Full Name: Malacothamnus davidsonii (Rob.) Greene
USDA PLANTS Symbol: MADA

2006 Gabi McLean
Biology Glossary
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 67
  • Element Occurrence Ranks:
    A B C D X U
    3 10 12 1 2 39
    • Population Status:
    Historic
    >20 yrs    		 Recent
    <=20 yrs
    27 40
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    65 1 1
Notes Glossary
  • Threatened by urbanization in LAX Co. Potentially threatened by maintenance activities and erosion. Intergrades with M. fasciculatus; see Madroño 46(3):142-152 (1999) for information.
  • 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: 2010-11-17
Location Glossary
  • Elevation: 185 - 855 meters
  • California Endemic: yes
  • States: California
  • California Counties and Islands:   name (code)
    Kern (KRN),  Los Angeles (LAX),  Monterey (MNT),  Santa Barbara (SBA),  Santa Clara (SCL),  San Luis Obispo (SLO),  San Mateo (SMT),  Ventura (VEN)
  • Quads:   name (DWR code) USGS code
    Burbank (111A) 34118B3,  Van Nuys (111B) 34118B4,  Condor Peak (136C) 34118C2,  San Fernando (137C) 34118C4,  Sunland (137D) 34118C3,  Lockwood Valley (165A) 34119F1,  Wheeler Springs (166D) 34119E3,  Cuyama Peak (191C) 34119G4,  Apache Canyon (191D) 34119G3,  Tierra Redonda Mountain (294C) 35120G8,  Bradley (294D) 35120G7,  Williams Hill (295A) 35121H1,  Jolon (295B) 35121H2,  Burnett Peak (295C) 35121G2,  Bryson (295D) 35121G1,  Thompson Canyon (318B) 36121B2,  Cosio Knob (318C) 36121A2,  Bear Canyon (319D) 36121A3,  Sycamore Flat (342C) 36121C4,  Palo Alto (428B) 37122D2,  Mindego Hill (428C) 37122C2,  Woodside (429A) 37122D3,  Montara Mountain (448C) 37122E4,  San Mateo (448D) 37122E3
  • 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 1062
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 http://www.rareplants.cnps.org [accessed ].
-118.125,34.25

CA
34118B3=Burbank (111A) 34118B3;34118B4=Van Nuys (111B) 34118B4;34118C2=Condor Peak (136C) 34118C2;34118C4=San Fernando (137C) 34118C4;34118C3=Sunland (137D) 34118C3;34119F1=Lockwood Valley (165A) 34119F1;34119E3=Wheeler Springs (166D) 34119E3;34119G4=Cuyama Peak (191C) 34119G4;34119G3=Apache Canyon (191D) 34119G3;35120G8=Tierra Redonda Mountain (294C) 35120G8;35120G7=Bradley (294D) 35120G7;35121H1=Williams Hill (295A) 35121H1;35121H2=Jolon (295B) 35121H2;35121G2=Burnett Peak (295C) 35121G2;35121G1=Bryson (295D) 35121G1;36121B2=Thompson Canyon (318B) 36121B2;36121A2=Cosio Knob (318C) 36121A2;36121A3=Bear Canyon (319D) 36121A3;36121C4=Sycamore Flat (342C) 36121C4;37122D2=Palo Alto (428B) 37122D2;37122C2=Mindego Hill (428C) 37122C2;37122D3=Woodside (429A) 37122D3;37122E4=Montara Mountain (448C) 37122E4;37122E3=San Mateo (448D) 37122E3