Taxon Details

Chaenactis suffrutescens

Shasta chaenactis

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Taxon Summary:

Chaenactis suffrutescens, commonly known as Shasta chaenactis, is a perennial herb in the Asteraceae that is found in California and elsewhere. It occurs within Lower montane coniferous forest, and Upper montane coniferous forest, growing at elevations from 750 to 2800 meters. Chaenactis suffrutescens is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification

Scientific Name: Chaenactis suffrutescens Gray
Common Name: Shasta chaenactis
Family:	Asteraceae
Element Code:	PDAST200H0
USDA Plants Symbol:	CHSU
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.3
Fed List:	None
State List:	None
Global Rank:	G2G3
State Rank:	S2S3
Other Status:	BLM_S; SB_BerrySB; USFS_S
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2023-08-01

Ecology and Life History

Lifeform: perennial herb

Blooming Period: May-Sep

Elevation:
750 - 2800 meters
2460 - 9185 feet

General Habitats:

Lower montane coniferous forest
Upper montane coniferous forest

Microhabitat Details:

Microhabitat:

Sandy
Serpentine

Notes

Notes: Rare on the Shasta-Trinity NF.
Threats: Threatened by erosion, grazing, and vehicles. Possibly threatened by development and non-native plants.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	10
	Total EOs	% of EOs
EOs with Threat Listed:	12	32 %
Road/trail construction/maint.	6	15%
Dam/Inundation	3	7%
Recreational use (non-ORV)	2	5%
Altered flood/tidal/hydrologic regime	1	2%
Development	1	2%
Erosion/runoff	1	2%
Grazing	1	2%
Non-native plant impacts	1	2%
ORV activity	1	2%
Other	1	2%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					38
A	B	C	D	X	U
4	7	2	2	1	22

Occurrence Status:
Historical >20 Years	31
Recent <=20 Years	7

Presence:
Presumed Extant	37
Possibly Extirpated	1
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Oregon (OR)

California Counties and Islands: Name (Code)
Siskiyou (SIS), Trinity (TRI)

Quads: Name (Quad Code)
Caribou Lake (4112218), Carrville (4112216), Cecil Lake (4112312), Cecilville (4112322), China Mtn. (4112245), City of Mount Shasta (4112233), Dees Peak (4112313), Dunsmuir (4112223), Duzel Rock (4112256), Etna (4112248), Fort Jones (4112257), Grasshopper Ridge (4112321), Greenview (4112258), Hayfork Summit (4012351), Mount Eddy (4112234), Seven Lakes Basin (4112224), Smoky Creek (4012332), Solomons Temple (4112263), South China Mtn. (4112235), Tangle Blue Lake (4112226), Thurston Peaks (4012382), Trinity Center (4012286), Weed (4112244)

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