Mentha canadensis

American cornmint, Japanese peppermint

Family:Lamiaceae

Rarity

CNPS-EB: B

10 current natural populations

Observations

CNPS-EB Database ⓘ
Calflora (group) ⓘ
Calflora (public)
iNaturalist
- Genus Mentha
- Mentha canadensis
CCH2

Key

Ecology

Flowers July - October

Habitats:

Miscellaneous Wetlands
Riparian

References

Synonyms

Mentha arvensis var. canadensis
Mentha arvensis var. villosa

Populations

Key

Location	Pop ID	Last Recorded	Notes
Antioch Dunes	10	2001-08-04
Concord Naval Weapons Station	9	2008-12-31
Corteva Wetlands	12	2022-08-28
Del Valle Regional Park	15	2023-09-02
Knowland Park, Oakland	6	2011-12-31
Niles Canyon area	5	2004-07-24
San Francisco Water District land, Sunol	4	2004-06-09
Sunol Rgnl Wilderness	2	2012-08-05
Sunol Rgnl Wilderness	13	2012-08-05
Sycamore Grove Rgnl Park - LAPRD	14	2024-09-24
Alameda Creek - Sunol Valley section, SFWD	1	2000-12-31	Historic
Berkeley, West	8	1888-08-22	Historic
Browns Island	11	1991-08-18	Historic
Sibley Rgnl Park	7	1995-06-30	Historic
Sunol Rgnl Wilderness	3	2021-08-22	ID Uncertain

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.