Adiantum shastense
Common Name: Shasta maidenhair fern
Family: Pteridaceae
Element Code:
Full Name: Adiantum shastense Huiet & A.R. Sm.

Biology Glossary
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences:
  • Element Occurrence Ranks:
    A B C D X U
  • Population Status:
    >20 yrs
    <=20 yrs
  • Presence:
    Present Extant Possibly Extirpated Extirpated
Notes Glossary
  • Originally identified as A. jordanii and also similar to A. capillus-veneris; distinguished from these species in having diamond shaped pinnules and by its perennial habit, with the presence of old fronds underlying its fresh fronds. See PhytoKeys 53:73-81 (2015) for original description.
  • To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
  • Date Added: 2016-11-18
  • Last Update: 2016-11-21
Location Glossary
  • Elevation: 330 - 1535 meters
  • California Endemic: yes
  • States: California
  • California Counties and Islands:   name (code)
    Shasta (SHA)
  • Quads:   name (DWR code) USGS code
    Oak Run (646A) 40122F1,  Bella Vista (646B) 40122F2,  Project City (647A) 40122F3,  Shasta Dam (647B) 40122F4,  Chalk Mtn. (663A) 40121H7,  Goose Gap (664A) 40122H1,  Bollibokka Mtn. (664B) 40122H2,  Minnesota Mtn. (664C) 40122G2,  Devils Rock (664D) 40122G1,  Lamoine (665B) 40122H4,  Bohemotash Mtn. (665C) 40122G4,  O'Brien (665D) 40122G3,  Lake McCloud (681A) 41122B1,  Girard Ridge (681B) 41122B2,  Yellowjacket Mtn. (681C) 41122A2,  Shoeinhorse Mtn. (681D) 41122A1,  Chicken Hawk Hill (682C) 41122A4
  • 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.
Quad data is not available for all List 3 and 4 plants. For those that do contain this data, it has not been quality controlled and is potentially incomplete, inaccurate, and/or out of date. Please use caution when referencing this information. We are currently working hard to maintain this data and hope to provide accurate and up to date information in the near future.
Presumed Extant Presumed Extirpated or Unknown 3932
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 ].

40122F1=Oak Run (646A) 40122F1;40122F2=Bella Vista (646B) 40122F2;40122F3=Project City (647A) 40122F3;40122F4=Shasta Dam (647B) 40122F4;40121H7=Chalk Mtn. (663A) 40121H7;40122H1=Goose Gap (664A) 40122H1;40122H2=Bollibokka Mtn. (664B) 40122H2;40122G2=Minnesota Mtn. (664C) 40122G2;40122G1=Devils Rock (664D) 40122G1;40122H4=Lamoine (665B) 40122H4;40122G4=Bohemotash Mtn. (665C) 40122G4;40122G3=O'Brien (665D) 40122G3;41122B1=Lake McCloud (681A) 41122B1;41122B2=Girard Ridge (681B) 41122B2;41122A2=Yellowjacket Mtn. (681C) 41122A2;41122A1=Shoeinhorse Mtn. (681D) 41122A1;41122A4=Chicken Hawk Hill (682C) 41122A4