Piperia transversa

flat spurred piperia, transverse piperia

Family:Orchidaceae

Rarity

CNPS-EB: B

7 current natural populations

Observations

Key

Ecology

Flowers May - August

Habitats:

Open Dry Slope
Forest
Scrub (Coastal or Interior)
Woodland

All Piperia

References

Jepson eFlora
Calflora
iNaturalist (Platanthera transversa)
CCH2

Synonyms

Platanthera transversa

Populations

Key

Location	Pop ID	Last Recorded	Notes
Black Diamond - Markley Canyon	1	2003-05-28
Bollinger Canyon, Moraga	8	2003-08-31
Crockett, West	3	2005-05-23
Flicker Ridge - EBMUD	7	2014-05-29
Mt. Diablo State Park - South side	4	2009-06-05
Mt. Diablo State Park - South side	5	2016-06-28
Redwood Rgnl Park	11	2022-07-27
Cedar Mountain	2	1993-06-27	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	6	1999-12-31	Historic
Pt. Molate	9	1998-12-31	Historic
Tassajara Road	10	1989-12-31	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.