Cypripedium montanum Douglas ex Lindl. 1840 SECTION Cypripedium SUBSECTION Cypripedium
Photos courtesy of © Bill Temple
Photos by Carl Austin of Orchid Species in Flask Ltd.
to EARLY 
Common Name The Mountain Ladies Slipper
Flower Size Up to 5" [to 12.5 cm]
A medium sized, cold growing terrestrial that is found in the western US north to southern Alaska in dappled shade of coniferous forests at elevations around 1500 meters with ovate-lanceolate, plicate, alternate leaves and blooms in the spring and early summer on a slender, terminal inflorescence that carries up to 3 distant flowers subtended by a leafy bract.
Synonyms Cypripedium montanum f. praetertinctum Sheviak 1990; Cypripedium montanum f. welchii P.M.Br. 1995; Cypripedium occidentale S. Wats. 1876
References W3 Tropicos, Kew Monocot list , IPNI ; Bonplandia Rchb.f 1856; Die Orchideen Schlechter 1915; Encyclopedia of Cultivated Orchids Hawkes 1965; AOS Bulletin Vol 38 #10 1969 photo fide; Die Orchideen 3 Auflage Bd 1 Sonderabdruck aus Schlechter Lieferung 4 193 to 256 Brieger, Maatsch and Senghas 1971 drawing ok; The Native Orchids of the United States and Canada Luer 1975 drawing/photos fide; Orchid Digest Vol 44 No 1 1980 drawing/photo fide; Orchid Digest Vol 45 No 1 1981 photo fide; Orchid Digest Vol 47 No 4 1983 photo fide; Orchid Digest Vol 56 No 2 1992 photo ; AOS Bulletin Vol 61 No 5/464 1992 photo; AOS Bulletin Vol 61 No 6/547 1992 photo fide; AOS Bulletin Vol 61 No 8 1992 photo fide; AOS Bulletin Vol 64 No 3 1995 photo fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 40 pg 2492 - 2564 Brieger 2000; AOS Bulletin Vol 71 No 1 2002 photo fide; AOS Bulletin Vol 75 No 5 2006 photo fide; Orchid Digest Vol 71 No 3 2007 photo fide; Orchid Digest Vol 75 #4 2011 photo fide; AOS Bulletin Vol 85 #3 2016 photo fide; AOS Bulletin Vol 86 #2 2017 photo fide; AOS Bulletin Vol 88 #3 2019 photo fide; AOS Bulletin Vol 88 #3 2019 as C montanum f praetertinctum photo fide; AOS Bulletin Vol 89 #1 2020 drawing fide
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