Taxon Report

Eriophyllum congdonii Bdg.

Congdon's woolly sunflower

Print Report

Classification


Scientific Name:	Eriophyllum congdonii Bdg.
Common Name:	Congdon's woolly sunflower
Family:	Asteraceae
Element Code:	PDAST3N030
USDA Plants Symbol:	ERCO16
Synonyms/Other Names:	Eriophyllum nubigenum var. congdonii

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Apr-Jun	Apr-Jun
Elevation:	500-1900 (1640-6235)
General Habitats:	Chaparral, Cismontane woodland, Lower montane coniferous forest, Valley and foothill grassland
Microhabitat:	Metamorphic, Rocky
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.2
Global Rank:	G2
State Rank:	S2
State List:	CR
Fed List:	None
Other Status:	SB_UCSC; USFS_S
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	21
Element Occurrence Ranks:
Excellent (A)	5
Good (B)	4
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	12

Location


California Endemic: True
California Counties and Islands: Name (Code)
Mariposa (MPA)
Quads: Name (Quad Code)
Buckingham Mtn. (3711957), El Portal (3711967), Kinsley (3711968), Wawona (3711956)

Threat List Data from the CNDDB


Threat List Total:	6
EOs with Threat Listed:	Total EOs	% of EOs
	7	33 %
Agriculture	4	19%
Road/trail construction/maint.	4	19%
Biocides	3	14%
Logging	3	14%
Mining	2	9%
Non-native plant impacts	1	4%

Notes



Known only from the Merced River drainage. Potentially threatened by development, road maintenance, and non-native plants. See Botanical Gazette 27:449-450 (1899) for original description.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 25 December 2024].