Taxon Details

Botrychium yaaxudakeit

giant 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

Scientific Name: Botrychium yaaxudakeit Stensvold & Farrar
Common Name: giant moonwort
Family:	Ophioglossaceae
Element Code:	PPOPH01180
USDA Plants Symbol:	BOYA
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.1
Fed List:	None
State List:	None
Global Rank:	G3G4
State Rank:	S1
Other Status:	USFS_S
CRPR Changes: added to 2.1 on 2012-03-05
Add Date:	2012-03-05
Date Edited:	2023-06-06

Ecology and Life History

Lifeform: perennial rhizomatous herb

Blooming Period: Aug

Elevation:
3200 - 3200 meters
10500 - 10500 feet

General Habitats:

Alpine boulder and rock field (meadows)

Microhabitat Details: Limestone and marble

Microhabitat:

Notes

Notes: Discovered in CA in 2007 by Alison Colwell; known only from Virginia Canyon in Yosemite NP. Similar to B. lunaria. Not in The Jepson Manual (1993). See American Fern Journal 92(2):150-160 (2002) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	0
	Total EOs	% of EOs
EOs with Threat Listed:	0	%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					1
A	B	C	D	X	U
0	0	0	0	0	1

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	1

Presence:
Presumed Extant	1
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Alaska (AK), California (CA), Montana (MT), Oregon (OR)

California Counties and Islands: Name (Code)
Tuolumne (TUO)

Quads: Name (Quad Code)
Dunderberg Peak (3811913)

Notes:

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.

Regional Map

Map

Presumed Extant

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CNPS Rare Plant Inventory