Amaranthus blitoides

procumbent pigweed, prostrate amaranth

Family:Amaranthaceae

Rarity

CNPS-EB: C

16 current natural populations

Observations

CNPS-EB Database ⓘ
Calflora (group) ⓘ
Calflora (public)
iNaturalist
- Genus Amaranthus
- Amaranthus blitoides
CCH2

Key

Ecology

Flowers July - November

Habitats:

Miscellaneous

All Amaranthus

A. blitoides
A. californicus (B)
A. palmeri (A1x)

References

Populations

Key

Location	Pop ID	Last Recorded	Notes
Big Break, Antioch	23	2026-06-20
Black Diamond Rgnl Preserve	3	2020-08-27
Briones Rgnl Park	4	2019-10-02
Byron Hot Springs area	5	2015-05-01
Concord - other or unknown sites	7	2025-06-03
Concord Naval Weapons Station	6	2008-12-31
Danville	12	2002-08-05
Mt. Diablo State Park - South side	9	2022-10-12
Mt. Wanda, Martinez	14	2002-08-12
Mt. Wanda, Martinez	15	2002-07-29
Ohlone Rgnl Wilderness	16	2024-08-02
Ohlone Rgnl Wilderness	17	2024-08-02
Pittsburg Shore	18	2002-05-02
San Pablo Reservoir - EBMUD	19	2005-08-19
Sunol Rgnl Wilderness	21	2025-07-17
Sycamore Grove Rgnl Park - LAPRD	22	2002-05-14
Alameda Shore	1	1898-09-17	Historic
Antioch Dunes	2	1982-09-30	Historic
Lawrence Livermore Lab, Site 300, Corral Hollow	8	1986-12-31	Historic
Los Vaqueros Watershed	13	1988-12-31	Historic
Mt. Diablo State Park - North side	10	1996-11-01	Historic
Mt. Diablo State Park - South side	11	2000-09-30	Historic
Sunol Rgnl Wilderness	20	1993-08-06	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.