Taxon Report

Cypripedium parviflorum Salisb. var. makasin (Farw.) Sheviak

northern yellow lady's-slipper

Print Report

Taxon Summary

Cypripedium parviflorum var. makasin, commonly known as northern yellow lady's-slipper, is a perennial herb in the Orchidaceae that is found in California and elsewhere. It occurs within Bogs and fens, and Meadows and seeps, growing at elevations from 0 to 1500 meters. Cypripedium parviflorum var. makasin is ranked 3.1, Plants About Which We Need More Information, A Review List; Seriously threatened in California.

Classification


Scientific Name:	Cypripedium parviflorum Salisb. var. makasin (Farw.) Sheviak
Common Name:	northern yellow lady's-slipper
Family:	Orchidaceae
Element Code:	PMORC0Q093
USDA Plants Symbol:	CYPAM3
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: May-Aug	May-Aug
Elevation:	0-1500 (0-4920)
General Habitats:	Bogs and fens, Meadows and seeps
Microhabitat:	Mesic
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	3.1
Global Rank:	G5T5
State Rank:	S1
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	added to 3 on 2016-09-29 changed from 3 to 3.1 on 2006-09-29

Occurrence Data from the CNDDB


Total Occurrences:	0
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	0

Location


California Endemic: False
California Counties and Islands: Name (Code)

Quads: Name (Quad Code)

Threat List Data from the CNDDB


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

Notes



Move to List 1B? Relocation and verification needed. Known in California from only one historical occurrence in Sierra County.
Threats:
Possibly threatened by horticultural collecting and logging.
Taxonomy:
See Report of the Michigan Academy of Science 20: 198 (1918) for original variety description as Cypripedium pubescens var. makasin and the American Orchid Society Bulletin 62: 403 (1993) for taxonomic revision.

Selected References

CRPR List Addition on 2016-09-29

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 8 November 2025].