Taxon Details

Dieteria asteroides var. lagunensis

Mt. Laguna aster

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Taxon Summary:

Dieteria asteroides var. lagunensis, commonly known as Mt. Laguna aster, is a perennial herb in the Asteraceae that is found in California and elsewhere. It occurs within Cismontane woodland, and Lower montane coniferous forest, growing at elevations from 790 to 2400 meters. Dieteria asteroides var. lagunensis is ranked 2B.1, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Dieteria asteroides Torrey var. lagunensis (D.D. Keck) D.R. Morgan & R.L. Hartman
Common Name: Mt. Laguna aster
Family:	Asteraceae
Element Code:	PDAST64131
USDA Plants Symbol:
Synonyms/Other Names: Machaeranthera lagunensis Keck Machaeranthera asteroides (Torr.) Greene var. lagunensis (Keck) Turner
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.1
Fed List:	None
State List:	CR (1979-09-01)
Global Rank:	G5?T2
State Rank:	S1
Other Status:	BLM_S; SB_CRES; USFS_S
CRPR Changes:
Add Date:	1988-01-01
Date Edited:	2023-06-06

Ecology and Life History

Lifeform: perennial herb

Blooming Period: (May)Jul-Aug

Elevation:
790 - 2400 meters
2590 - 7875 feet

General Habitats:

Cismontane woodland
Lower montane coniferous forest

Microhabitat Details:

Microhabitat:

Notes

Notes: Known in CA from fewer than 5 occurrences. Threatened by development, grazing and recreational activities. Potentially threatened by road maintenance. See Brittonia 9:238 (1957) for original description and SIDA 20(4): 1393 (2003) for revised nomenclature.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	8
	Total EOs	% of EOs
EOs with Threat Listed:	2	29 %
Grazing	2	28%
Road/trail construction/maint.	2	28%
Wood cutting or brush clearing	1	14%
Foot traffic/trampling	1	14%
Logging	1	14%
ORV activity	1	14%
Other	1	14%
Recreational use (non-ORV)	1	14%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					7
A	B	C	D	X	U
0	2	1	0	0	4

Occurrence Status:
Historical >20 Years	4
Recent <=20 Years	3

Presence:
Presumed Extant	7
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Baja California (BA), California (CA)

California Counties and Islands: Name (Code)
San Diego (SDG)

Quads: Name (Quad Code)
Campo (3211654), Earthquake Valley (3311614), Jacumba (3211662), Mount Laguna (3211674)

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