Crassula aquatica

water pygmy-weed

Family:Crassulaceae

Rarity

CNPS-EB: B

9 current natural populations

Criteria:

Limited/Threatened Habitat

Observations

CNPS-EB Database ⓘ
Calflora (group) ⓘ
Calflora (public)
iNaturalist
- Genus Crassula
- Crassula aquatica
CCH2

Key

Ecology

Habitats:

Freshwater Marsh
Salt Marsh
Vernal Pool
Miscellaneous Wetlands

All Crassula

C. aquatica
C. solieri (A1x)

References

Synonyms

Crassula saginoides
Tillaea aquatica

Populations

Key

Location	Pop ID	Last Recorded	Notes
Brushy Peak - EBRPD	21	2024-03-25
Mt. Diablo State Park - South side	5	2025-06-08
Mt. Diablo State Park - South side	6	2025-06-08
Mt. Diablo State Park - South side	19	2022-05-07
Mt. Diablo State Park - West side	20	2022-05-14
Newark	12	2004-04-10
Springtown Wetlands Preserve	17	2003-05-10
Springtown Wetlands Preserve Area	11	2005-05-12
Warm Springs, Fremont	18	2019-05-20
Byron Hot Springs area	1	1993-03-28	Historic
Byron Hot Springs area	2	1971-04-15	Historic
Carquinez Strait Rgnl Park	4	1991-05-12	Historic
Chabot Rgnl Park	3	1981-04-20	Historic
El Cerrito - other or unknown sites	8	1937-04-19	Historic
Lime Ridge area	9	1996-12-31	Historic
Los Vaqueros Watershed	10	1988-12-31	Historic
Mt. Diablo State Park - West side	7	1998-12-31	Historic
Ohlone Rgnl Wilderness	13	1999-06-14	Historic
Pinole - EBMUD land nearby	15	1999-12-31	Historic
Pinole - EBMUD land nearby	16	1999-12-31	Historic
Pleasanton Ridge Rgnl Park	14	1993-07-13	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.