Species Details

Symphyotrichum lentum

Suisun Marsh aster

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Lifeform: perennial rhizomatous herb
Blooming Period: (Apr)May-Nov
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Elevation:
0 - 3 meters
0 - 10 feet
General Habitats:
  • Marshes and swamps (brackish, freshwater)
Microhabitat Details:
Microhabitat:
Notes:
Intergrades into A. chilensis. See Manual of the Botany of the Region of San Francisco Bay, p. 180 (1894) by E. Greene for original description and Phytologia 77(3): 286 (1994) for revised nomenclature.
Threats:
Seriously threatened by marsh habitat alteration and loss, and erosion. Possibly threatened by herbicide application.
Taxonomy:
USFWS uses the name A. chilensis var. lentus.
Threat List Total: 10
Total EOs % of EOs
EOs with Threat Listed: 62 35 %
THREAT LIST:
Waterway bank protection/maintenance 27 15%
Erosion/runoff 18 10%
Recreational use (non-ORV) 17 9%
Non-native plant impacts 11 6%
Other 11 6%
Total Occurrences: 175
Element Occurrence Ranks:
A B C D X U
6 26 49 15 0 79
Occurrence Status:
Historical >20 Years 94
Recent <=20 Years 81
Presence:
Presumed Extant 175
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Contra Costa (CCA), Napa (NAP), Sacramento (SAC), San Joaquin (SJQ), Solano (SOL), Yolo (YOL)
Quads: Name (Quad Code)
Antioch North (3812117), Benicia (3812212), Bouldin Island (3812115), Brentwood (3712186), Cordelia (3812222), Cuttings Wharf (3812223), Denverton (3812128), Dozier (3812137), Elmira (3812138), Fairfield North (3812231), Fairfield South (3812221), Holt (3712184), Honker Bay (3812118), Isleton (3812125), Jersey Island (3812116), Knights Landing (3812176), Liberty Island (3812136), Lodi South (3812113), Napa (3812233), Rio Vista (3812126), Sacramento West (3812155), San Quentin (3712284), Stockton West (3712183), Terminous (3812114), Thornton (3812124), Vine Hill (3812211), Woodward Island (3712185)
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.
Presumed Extant
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