Symphyotrichum lentum

Suisun marsh aster

Family:Asteraceae

Rarity

CNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2

23 current natural populations

Criteria:

Limited/Threatened Habitat
Small Populations

Observations

Key

Ecology

Flowers May - November

Habitats:

Miscellaneous Wetlands

All Symphyotrichum

S. frondosum (A1x)

S. lanceolatum var. hesperium (A2)

S. lentum

S. subulatum var. parviflorum (B)

References

Synonyms

Aster chilensis var. lentus
Aster chilensis var. sonomensis
Aster lentus var. sonomensis
Aster lentus

Populations

Key

Location	Pop ID	Last Recorded	Notes
Antioch Dunes	1	2022-08-11
Antioch Dunes	26	2022-07-14
Antioch Shoreline	2	2000-10-01
Antioch Shoreline	6	2008-08-11
Bethel Island	13	2009-09-18
Browns Island	4	2015-09-12
Concord Naval Weapons Station	22	2002-10-08
Corteva Wetlands	3	2022-08-28
Corteva Wetlands	5	2021-08-01
Corteva Wetlands	27	2022-08-28
Delta Area - other or unknown site	16	2009-09-02
Dutch Slough	9	2009-09-18
Dutch Slough	10	2009-09-18
Frank's Tract	14	2003-08-05
Holland Tract	19	2008-09-23
Holland Tract	20	2009-07-10
Jersey Island	11	2009-09-02
Jersey Island	12	2009-09-16
Jersey Island	28	2009-09-16
Jersey Island	30	2009-09-18
Pacheco Slough	23	2004-09-09
Rhode Island	29	2003-08-05
Webb Tract	17	2009-09-16
Antioch Shoreline	31	1985-06-30	Historic
Bethel Island	18	1990-09-16	Historic
Big Break, Antioch	8	1998-12-31	Historic
Frank's Tract	15	1992-12-31	Historic
Martinez, East of Benecia Bridge	24	1988-12-31	Historic
Pittsburg Shore	7	1990-08-20	Historic
Pt. Molate	25	1988-09-28	Historic
Rock Slough	21	1986-12-31	Historic

The list of populations shows the distinct populations identified by the CNPS-EB Rare and Unusual Plants Committee. The locations in this list are very general. More specific location details can be obtained from the links in the Observations section (for some of these links, a login is required).

Font

Populations in bold type have precise coordinates available for field volunteers and researchers.

Populations in normal type are only known from a description of the location; no precise coordinates are available.

Background

Populations with a white background have been observed in the last 25 years.

Populations with a blue background have not been observed for at least 25 years.

Populations with an orange background have an uncertain location or identification, or are planted.

Columns

Pop ID is a label that identifies the population. Many locations have more than one population of a species, and the population ID is used to distinguish them.