Species Details

Botrychium paradoxum

paradox moonwort

  Download Report   Calflora     eFlora     CCH     CalPhotos
Photo of Botrychium paradoxum
©2011 Ryan Batten
Photo of Botrychium paradoxum
© 2011 Ryan Batten
Photo of Botrychium paradoxum
©2011 Ryan Batten
Scientific Name:
Botrychium paradoxum W.H. Wagner
Common Name:
paradox moonwort
Family: Ophioglossaceae
Element Code: PPOPH010J0
USDA Plants Symbol: BOPA9
Synonyms/Other Names:
CA Rare Plant Rank: 2B.1
Fed List: None
State List: None
Global Rank: G3G4
State Rank:
Other Status: USFS_S
CRPR Changes:
changed from 2.1 to 2B.1 on 2013-06-12
added to 2.1 on 2012-03-05
Add Date: 2012-03-05
Date Edited: 2021-06-03
Lifeform: perennial rhizomatous herb
Blooming Period: Aug
1740 - 4200 meters
5710 - 13780 feet
General Habitat:
  • Alpine boulder and rock field (limestone, marble)
  • Upper montane coniferous forest (moist)
General Micro Habitat:
Micro Habitat:
Discovered in CA by Alison Colwell in the vicinity of Yosemite NP. Potentially threatened by hydrological alterations caused by logging activities. Easy to identify due to two nearly identical sporophores and no trophophore; other Botrychium spp. will occasionally produce a spore-bearing trophophore, but the two leaf segments are generally not identical. Not in The Jepson Manual (1993). See American Fern Journal 71(1):20-30 (1981) for original description, and 85(4):375-394 (1995) for taxonomic treatment.
Total Occurrences: 2
Element Occurrence Ranks:
0 0 0 0 0 2
Occurrence Status:
Historical >20 Years 0
Recent <=20 Years 2
Presumed Extant 2
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA), Colorado (CO), Idaho (ID), Montana (MT), Oregon (OR), Utah (UT), Washington (WA), Wyoming (WY)
California Counties and Islands: Name (Code)
Madera (MAD), Mariposa (MPA), Tuolumne (TUO)
Quads: Name (Quad Code)
Dunderberg Peak (3811913), Vogelsang Peak (3711973)
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.


Presumed Extant
Counties   Quads