Delphinium hansenii subsp. hansenii

Hansen's larkspur

Family:Ranunculaceae

Rarity

CNPS-EB: A2

12 current natural populations

Criteria:

W Limit

Observations

Key

Ecology

Flowers May - July

Habitats:

Chaparral
Woodland

All Delphinium

References

Synonyms

Delphinium hansenii subsp. arcuatum
Delphinium hansenii var. arcuatum
Delphinium hesperium var. hansenii

Populations

Key

Location	Pop ID	Last Recorded	Notes
Black Diamond - Stewartsville	3	2004-05-01
Black Diamond Rgnl Preserve	1	2023-05-19
Black Diamond Rgnl Preserve	2	2004-05-01
Lime Ridge area	8	2004-05-01
Los Vaqueros Watershed	4	2021-03-26
Morgan Territory Rgnl Park	7	2024-06-05
Morgan Territory Rgnl Park	9	2003-06-07
Mt. Diablo State Park - North side	12	2022-04-17
Mt. Diablo State Park - North side	13	2011-06-20
Mt. Diablo State Park - South side	17	2006-06-13
Mt. Diablo State Park - West of Mt. Zion	14	2003-05-08
Round Valley Rgnl Park	6	2023-06-08
Marsh Creek Road	5	1947-05-04	Historic
Mt. Diablo State Park - East side	10	1996-04-14	Historic
Mt. Diablo State Park - East side	11	1993-05-08	Historic
Mt. Diablo State Park - South side	15	2000-05-16	Historic
Mt. Diablo State Park - South side	16	1995-05-29	Historic
Mt. Diablo State Park - West side	18	1938-05-25	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.