Taxon Report

Eriophyllum nubigenum Greene

Yosemite woolly sunflower

Print Report

Taxon Summary

Eriophyllum nubigenum, commonly known as Yosemite woolly sunflower, is a annual herb in the Asteraceae that is found only in California. It occurs within Chaparral, Lower montane coniferous forest, and Upper montane coniferous forest, growing at elevations from 1525 to 2750 meters. Eriophyllum nubigenum is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification


Scientific Name:	Eriophyllum nubigenum Greene
Common Name:	Yosemite woolly sunflower
Family:	Asteraceae
Element Code:	PDAST3N0A0
USDA Plants Symbol:	ERNU6
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual herb
Blooming Period: May-Aug	May-Aug
Elevation:	1525-2750 (5005-9025)
General Habitats:	Chaparral, Lower montane coniferous forest, Upper montane coniferous forest
Microhabitat:	Granitic, Gravelly
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.3
Global Rank:	G2
State Rank:	S2
State List:	None
Fed List:	None
Other Status:	USFS_S
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	14
Element Occurrence Ranks:
Excellent (A)	3
Good (B)	4
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	7

Location


California Endemic: True
California Counties and Islands: Name (Code)
Madera (MAD), Mariposa (MPA), Tuolumne (TUO)
Quads: Name (Quad Code)
Ascension Mtn. (3711978), Half Dome (3711965), Mariposa Grove (3711955), Merced Peak (3711964)

Threat List Data from the CNDDB


Threat List Total:	4
EOs with Threat Listed:	Total EOs	% of EOs
	5	36 %
Foot traffic/trampling	5	35%
Non-native plant impacts	3	21%
Other	2	14%
Recreational use (non-ORV)	1	7%

Notes



Known from fewer than twenty occurrences. Threatened by foot traffic, non-native plants and recreational activities. See Madroño 29(2):123 (1982) for information on rediscovery.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 5 February 2025].