Hydrocotyle verticillata

whorled marsh pennywort

Family:Araliaceae

Rarity

CNPS-EB: B

8 current natural populations

Criteria:

Limited/Threatened Habitat
Narrow Range in ALA & CCA

Observations

CNPS-EB Database ⓘ
Calflora (group) ⓘ
Calflora (public)
iNaturalist
- Genus Hydrocotyle
- Hydrocotyle verticillata
CCH2

Key

Ecology

Flowers April - September

Habitats:

Freshwater Marsh

All Hydrocotyle

H. ranunculoides (B)
H. verticillata

References

Synonyms

Hydrocotyle verticillata var. triradiata

Populations

Key

Location	Pop ID	Last Recorded	Notes
Antioch Dunes	2	2023-06-21
Antioch Dunes	9	2022-07-14
Browns Island	4	2020-12-04
Corteva Wetlands	5	2021-07-23
Corteva Wetlands	10	2022-08-28
Lone Tree Valley, Antioch	8	2005-12-31
Mt. Diablo State Park - West side	12	2022-09-16
Winter Island	13	2025-07-14
Alameda Creek - Sunol Valley section, SFWD	1	2000-12-31	Historic
Antioch Shoreline	3	1991-12-31	Historic
Browns Island	11	1978-12-31	Historic
Dutch Slough	6	1987-07-27	Historic
Frank's Tract	7	1990-09-16	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.