Piperia michaelii

Michael's rein-orchid

Family:Orchidaceae

Rarity

CNPS-EB: *A2
State CNPS: 4.2
Global Rank: G3
CNDDB Rank: S3

17 current natural populations

Observations

CNPS-EB Database ⓘ
Calflora (group) ⓘ
Calflora (public)
iNaturalist
- Genus Platanthera
- Platanthera michaelii
CCH2

Key

Ecology

Flowers April - August

Habitats:

Forest
Scrub (Coastal or Interior)
Woodland

All Piperia

References

Synonyms

Platanthera michaelii

Populations

Key

Location	Pop ID	Last Recorded	Notes
Black Diamond Rgnl Preserve	2	2022-12-31
Briones Reservoir, EBMUD	3	2005-07-30
Lime Ridge area	13	2004-05-01
Los Mochos Boy Scout Camp, Mines Rd	14	2023-05-20
Morgan Territory Rgnl Park	15	2024-05-06
Morgan Territory Rgnl Park	23	2024-05-06
Mt. Diablo State Park - East side	5	2023-05-18
Mt. Diablo State Park - North side	7	2009-05-15
Mt. Diablo State Park - North side	8	2009-05-15
Mt. Diablo State Park - North side	9	2009-05-13
Mt. Diablo State Park - North side	24	2024-05-06
Mt. Diablo State Park - North side	25	2024-05-05
Mt. Diablo State Park - North side	26	2023-06-17
Mt. Diablo State Park - South side	11	2006-06-13
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	27	2025-07-03
San Leandro Reservoir - EBMUD	18	2004-06-30
Tesla, Corral Hollow	4	2016-05-26
Albany Hill	1	1991-06-21	Historic
Black Diamond - Markley Canyon	22	2023-06-12	ID Uncertain
Mt. Diablo State Park - North side	6	1998-07-11	Historic
Mt. Diablo State Park - North side	10	1935-05-16	Historic
Mt. Diablo State Park - North side	12	2005-07-01	ID Uncertain
Round Valley Rgnl Park	19	1992-05-10	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.