Apocynum cannabinum

dogbane, Indian-hemp

Family:Apocynaceae

Rarity

CNPS-EB: B-PV

14 current natural populations

Criteria:

Limited/Threatened Habitat

Observations

CNPS-EB Database ⓘ
Calflora (group) ⓘ
Calflora (public)
iNaturalist
- Genus Apocynum
- Apocynum cannabinum
CCH2

Key

Ecology

Flowers April - October

Habitats:

Freshwater Marsh
Riparian

All Apocynum

A. androsaemifolium (A2)
A. cannabinum

References

Synonyms

Apocynum cannabinum var. glaberrimum
Apocynum oblongum
Apocynum palustre
Apocynum sibiricum var. salignum

Populations

Key

Location	Pop ID	Last Recorded	Notes
Antioch Dunes	1	2022-07-14
Big Break, Antioch	2	2025-10-05
Diablo Foothills Rgnl Park	6	2020-07-18
Martinez - other or unknown sites	14	2004-07-09
Martinez - other or unknown sites	15	2004-07-09
Mines Road/Arryo Mocho	19	2023-06-24
Mt. Diablo State Park - South side	7	2011-11-09
Mt. Diablo State Park - South side	8	2015-04-18
Mt. Diablo State Park - West side	22	2009-06-08
Ohlone Rgnl Wilderness	20	2022-07-12
Pleasanton Area	21	2025-06-20
San Francisco Water District land, Sunol	17	2009-12-31
Sunol Rgnl Wilderness	18	2025-06-20
Winter Island	23	2025-07-14
Alamo	3	1998-12-31	Historic
Berkeley - other or unknown sites	4	1916-12-31	Historic
Browns Island	5	1978-12-31	Historic
Lafayette - other or unknown sites	11	1998-12-31	Historic
Las Trampas Creek, Lafayette	12	1993-12-31	Historic
Morgan Territory Rgnl Park	13	1996-12-31	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	9	1933-12-31	Historic
Mt. Diablo State Park - West side	10	1997-12-31	Historic
Oakland - other or unknown sites	16	1916-12-31	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.