Lilaeopsis masonii

Rarity

CNPS-EB: *A2
State CNPS: 1B.1
CESA Status: CR
Global Rank: G2
CNDDB Rank: S2

23 current natural populations

Criteria:

Limited/Threatened Habitat
W Limit
Small Geographical Range

Observations

CNPS-EB Database ⓘ
Calflora (group) ⓘ
Calflora (public)
iNaturalist
- Genus Lilaeopsis
- Lilaeopsis occidentalis
CCH2

Key

Ecology

Flowers June - August

Habitats:

Brackish Marsh
Freshwater Marsh

References

Synonyms

Lilaeopsis occidentalis

Populations

Key

Location	Pop ID	Last Recorded	Notes
Antioch Dunes	1	2023-06-21
Antioch Dunes	2	2023-06-21
Clifton Court Forebay - E of Byron	10	2009-08-31
Clifton Court Forebay - E of Byron	11	2009-09-02
Clifton Court Forebay - E of Byron	12	2009-08-17
Clifton Court Forebay - E of Byron	13	2009-09-02
Clifton Court Forebay - E of Byron	43	2009-09-15
Corteva Wetlands	14	2021-07-23
Frank's Tract	16	2009-09-16
Frank's Tract	42	2009-09-16
Holland Tract	17	2009-07-21
Holland Tract	20	2009-07-21
Jersey Island	21	2009-09-18
Jersey Island	22	2009-09-18
Jersey Island	23	2009-09-02
Jersey Island	24	2009-09-02
Jersey Island	45	2009-09-18
Martinez Marsh Regional Shoreline	46	2025-06-04
Pacheco Slough	29	2004-08-31
Peyton Marsh, Martinez	31	2010-05-07
Pittsburg Shore	33	2025-06-16
Rhode Island	18	2009-07-20
Rhode Island	19	2009-07-20
Antioch Shoreline	3	1990-07-28	Historic
Antioch Shoreline	4	1998-10-14	Historic
Bethel Island	7	1987-04-06	Historic
Big Break, Antioch	5	1998-12-31	Historic
Browns Island	8	1992-12-31	Historic
Concord Naval Weapons Station	9	1992-01-26	Historic
Corteva Wetlands	15	1992-12-31	Historic
Delta Area - other or unknown site	6	1992-06-17	Historic
Jersey Island	44	1992-06-17	Historic
Old River	25	1992-06-09	Historic
Orwood Tract	26	1992-06-09	Historic
Orwood Tract	27	1992-05-20	Historic
Orwood Tract	28	1992-06-08	Historic
Pittsburg Shore	32	1992-12-31	Historic
Pittsburg Shore	34	1990-08-20	Historic
Pt. Edith	35	1991-06-03	Historic
Rhode Island	36	1992-12-31	Historic
Rhode Island	37	1989-08-12	Historic
Rock Slough	30	1992-12-31	Historic
Sand Mound Slough	38	1992-12-31	Historic
Seal Island	39	1996-04-04	Historic
Webb Tract	40	1992-12-31	Historic
Winter Island	41	1992-12-31	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.