Taxon Details

Dieteria canescens var. ziegleri

Ziegler's aster

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Taxon Summary:

Dieteria canescens var. ziegleri, commonly known as Ziegler's aster, is a perennial herb in the Asteraceae that is found only in California. It occurs within Lower montane coniferous forest, and Upper montane coniferous forest, growing at elevations from 1372 to 2499 meters. Dieteria canescens var. ziegleri is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Dieteria canescens (Pursh) Nuttall var. ziegleri (Munz) D.R. Morgan & R.L. Hartman
Common Name: Ziegler's aster
Family:	Asteraceae
Element Code:	PDAST640B2
USDA Plants Symbol:
Synonyms/Other Names: Machaeranthera canescens (Pursh) Gray var. ziegleri (Munz) Turner
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G5T1
State Rank:	S1
Other Status:	SB_CalBG/RSABG; SB_USDA; USFS_S
CRPR Changes:
Add Date:	1980-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jul-Oct

Elevation:
1372 - 2499 meters
4500 - 8200 feet

General Habitats:

Lower montane coniferous forest
Upper montane coniferous forest

Microhabitat Details:

Microhabitat:

Notes

Notes: Known only from the Santa Rosa Mtns. Threatened by grazing, road maintenance, trampling, and vehicles. See Aliso 7:65-66 (1969) for original description and SIDA 20(4): 1396 (2003) for revised nomenclature.
Threats:
Taxonomy:

Threat List Data from the CNDDB

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

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					3
A	B	C	D	X	U
1	0	0	0	0	2

Occurrence Status:
Historical >20 Years	1
Recent <=20 Years	2

Presence:
Presumed Extant	3
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Riverside (RIV)

Quads: Name (Quad Code)
Butterfly Peak (3311655), Toro Peak (3311654)

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