Taxon Details

Platanthera yosemitensis

Yosemite bog orchid

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Taxon Summary:

Platanthera yosemitensis, commonly known as Yosemite bog orchid, is a perennial herb in the Orchidaceae that is found only in California. It occurs within Meadows and seeps, growing at elevations from 2100 to 2285 meters. Platanthera yosemitensis is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Platanthera yosemitensis A. Colwell, C. Sheviak, and P. Moore
Common Name: Yosemite bog orchid
Family:	Orchidaceae
Element Code:	PMORC1Y1B0
USDA Plants Symbol:	PLYO2
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:	IUCN_EN; SB_CalBG/RSABG; USFS_S
CRPR Changes: added to 1B.2 on 2007-09-10
Add Date:	2007-09-10
Date Edited:	2022-12-06

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jul-Aug

Elevation:
2100 - 2285 meters
6890 - 7495 feet

General Habitats:

Meadows and seeps

Microhabitat Details: montane

Microhabitat:

Granitic
Mesic

Notes

Notes: Threatened by foot traffic and vehicles. Possibly threatened by meadow succession, recreational activities, and horticultural collecting. Not in TJM (1993). See Madroño 54(1): 86 (2007) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	3
	Total EOs	% of EOs
EOs with Threat Listed:	4	57 %
Grazing	2	28%
Surface water diversion	1	14%
Foot traffic/trampling	1	14%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					7
A	B	C	D	X	U
2	0	0	0	0	5

Occurrence Status:
Historical >20 Years	5
Recent <=20 Years	2

Presence:
Presumed Extant	7
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Fresno (FRE), Mariposa (MPA)

Quads: Name (Quad Code)
El Capitan (3711966), Patterson Mtn. (3611981)

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