CNPS Inventory Plant Detail

Symphyotrichum lentum

Common Name:	Suisun Marsh aster
Family:	Asteraceae
Synonyms:	Aster chilensis var. lentus, Aster lentus
Element Code:	PDASTE8470
Full Name:	Symphyotrichum lentum (Greene) G.L. Nesom
USDA PLANTS Symbol:	SYLE2

Biology
Lifeform: perennial rhizomatous herb Blooming Period: May - November Habitat: • Marshes and swamps (brackish and freshwater)

Rarity Status
Rare Plant Rank: 1B.2 Rare, threatened, or endangered in California and elsewhere .2: Fairly endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S2 S2: Imperiled. Global Rank: G2 G2: Imperiled.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 169
Element Occurrence Ranks:

A B C D X U

2 26 48 15 0 78

Population Status:

Historic >20 yrs	Recent <=20 yrs
29	140

Presence:

Present Extant	Possibly Extirpated	Extirpated
169	0	0

Notes

Seriously threatened by marsh habitat alteration and loss, and erosion. Possibly threatened by herbicide application. Intergrades into A. chilensis. USFWS uses the name A. chilensis var. lentus. 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.
To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
Date Added: 1974-01-01
Last Update: 2010-03-15

Location

Elevation: 0 - 3 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Contra Costa (CCA), Napa (NAP), Sacramento (SAC), San Joaquin (SJQ), Solano (SOL), Yolo (YOL)

Quads: name (DWR code) USGS code
Vernalis (444A) 37121F3, Tracy (444B) 37121F4, Stockton East (461B) 37121H2, Holt (462B) 37121H4, Union Island (462C) 37121G4, Lathrop (462D) 37121G3, Woodward Island (463A) 37121H5, San Quentin (466B) 37122H4, Thornton (479B) 38121B4, Terminous (479C) 38121A4, Isleton (480A) 38121B5, Rio Vista (480B) 38121B6, Jersey Island (480C) 38121A6, Bouldin Island (480D) 38121A5, Denverton (481B) 38121B8, Honker Bay (481C) 38121A8, Antioch North (481D) 38121A7, Fairfield South (482A) 38122B1, Cordelia (482B) 38122B2, Benicia (482C) 38122A2, Vine Hill (482D) 38122A1, Cuttings Wharf (483A) 38122B3, Mare Island (483D) 38122A3, Liberty Island (497C) 38121C6, Dozier (498D) 38121C7, Napa (500D) 38122C3, Sacramento West (513D) 38121E5

Notes:

Definitions of codes preceding a county and/or quad:
*		Presumed extirpated
?		Uncertain about distribution or identity
?*		Uncertain about distribution, but presumed extirpated if once present
(?)		Occurrence confirmed, but possibly extirpated

Species may be present in other areas where conditions are favorable.

Presumed Extant

Presumed Extirpated or Unknown

289

Links to Leading Resources of Taxon Information
USDA PLANTS Calflora CalPhotos Consortium of California Herbaria California Department of Fish and Wildlife: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society. Sacramento, CA. Accessed on .

-121.75,38.0