CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record cypripedium_montanum - Wed, Dec. 1, 2021, 20:06 ET b
Cypripedium montanum
common namemountain lady's-slipper
Inventory image more photos more photos
Gerald and Buff Corsi ©2000 California Academy of Sciences
life form rhizomatous herb
CA Rare Plant Rank
List 4.2
LIST 4: Limited distribution (Watch List).
     0.2: Fairly endangered in California
state rank
S4      ranking system key
global rank
G4     G4: apparently secure, but some concern
Where did the "RED" code go?
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Counties, states, regions:
Del Norte (DNT), Glenn (GLE), Humboldt (HUM), Madera (MAD), Mendocino (MEN), Modoc (MOD), Mariposa (MPA), Plumas (PLU), Santa Cruz (SCR)(*?), Shasta (SHA), Sierra (SIE), Siskiyou (SIS), San Mateo (SMT)(*?), Sonoma (SON), Tehama (TEH), Trinity (TRI), Tuolumne (TUO), Alaska (AK), Idaho (ID), Montana (MT), Oregon (OR), Washington (WA), Wyoming (WY)
  • Pending additional quad-level data, only county data are being provided for List 4 plants.
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Broadleafed upland forest (BUFrs)
•Cismontane woodland (CmWld)
•Lower montane coniferous forest (LCFrs)
•North Coast coniferous forest (NCFrs)
blooming period Mar-Aug  
elevation range185 - 2225 meters
Widely scattered, but most occurrences small. Many protected populations on USFS land not reproducing. Threatened by logging and horticultural collecting. Possibly threatened by road maintenance, vehicles, recreational activities, non-native plants, alteration of fire regimes, and grazing. On watch list in OR. See Fremontia 17(2):17-19 (1989) and The Wild Orchids of California, p. 69-72 (1995) by R. Coleman for species accounts.
full nameCypripedium montanum Lindl.
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym  CYMO2 Element Code  PMORC0Q080
CNPS chapter link chapter content  North Coast database for this species
CalFlora species this taxon    CalFlora genus related taxa
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
search Google CNPS website    search Google entire web

Suggested citation: California Native Plant Society (CNPS). 2018. Inventory of Rare and Endangered Plants (online edition, v7-18mar). California Native Plant Society. Sacramento, CA. Accessed on Wed, Dec. 1, 2021 from

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