Taxon Report
Botrychium yaaxudakeit Stensvold & Farrargiant moonwort |
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Taxon Summary
Botrychium yaaxudakeit, commonly known as giant moonwort, is a perennial rhizomatous herb in the Ophioglossaceae that is found in California and elsewhere. It occurs within Alpine boulder and rock field, growing at elevations from 3200 to 3200 meters. Botrychium yaaxudakeit is ranked 2B.1, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Seriously threatened in California.Classification
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Scientific Name: |
Botrychium yaaxudakeit Stensvold & Farrar |
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Common Name: |
giant moonwort |
| Family: | Ophioglossaceae |
| Element Code: | PPOPH01180 |
| USDA Plants Symbol: | BOYA |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial rhizomatous herb |
| Blooming Period: Aug | Aug |
| Elevation: | 3200-3200 (10500-10500) |
| General Habitats: | Alpine boulder and rock field |
| Microhabitat: | |
| Microhabitat Details: | Limestone and marble |
Conservation Status
| CA Rare Plant Rank: | 2B.1 |
| Global Rank: | G3G4 |
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State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 1 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 1 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Tuolumne (TUO) | |
| Quads: Name (Quad Code) | |
| Dunderberg Peak (3811913) | |
Threat List Data from the CNDDB
| Threat List Total: | 0 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 0 | % | |
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Selected References
| Proposed Addition to CRPR 2.1, G3G4 / S1 (2012) |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 October 2025].