Cypripedium reginae Walter 1788 SECTION Cypripedium SUBSECTION Obtusipetala
Photo by Jim Fowler and his P-Base Orchid North American Orchid Website
Photo by Joseph Dougherty.
Photo by Fredrick W Case
to EARLY
Common Name Showy Lady's Slipper or Queen Lady's Slipper
Flower Size to 4" [to 10 cm]
This medium sized, cold growing terrestrial is from northeastern and north central North America and is found on the margins of wet bogs and has a stem carrying 7, ovate-lanceolate, suberect to spreading, plicate, subacute leaves with undulate margins that blooms in the spring through early fall on a slender, terminal inflorescence that has from 1 to rarely 4, color variable flowers subtended by a leafy bract.
Synonyms Calceolus hirsutus Nieuwl. 1913; Calceolus reginae Nieuwl. 1913; Cypripedium album Ait. 1789; Cypripedium canadense Michx. 1803; Cypripedium hirsutum [Farwell] Miller 1768; Cypripedium hirsutum f. album R.Hoffm. 1922; Cypripedium humile Salisb. 1791; Cypripedium reginae f. albolabium Fernald & B.G.Schub. 1948; Cypripedium reginae f. album (Aiton) House 1923; Cypripedium reginae var. album (Aiton) Rolfe 1911; Cypripedium spectabile Sw. 1791; Fissipes hirsuta Farwell 1917
References W3 Tropicos, Kew Monocot list , IPNI ; Die Orchideen Schlechter 1915 photo fide; Atlas des Orchidees Cultivees Constantin 1920 drawing fide; AOS Bulletin Vol 26 No 7 1957 painting fide; AOS Bulletin Vol 27 No 10 1958 photo fide; AOS Bulletn Vol 31 No 6 1962 photo fide; AOS Bulletin Vol 6 1963 photo fide; AOS Bulletin Vol 33 No 5 1964 photo fide; Encyclopedia of Cultivated Orchids Hawkes 1965; AOS Bulletin Vol 38 #10 1969 photo fide; AOS Bulletin Vol 39 No 4 1970 photo;Die Orchideen 3 Auflage Bd 1 Sonderabdruck aus Schlechter Lieferung 4 193 to 256 Brieger, Maatsch and Senghas 1971 photo ok; The Native Orchids of the United States and Canada Luer 1975 drawing/photos fide; AOS Bulletin Vol 49 NO 3 1980; Orchid Digest Vol 44 No 6 1980 photo fide; AOS Bulletin Vol 50 No 6 1981 photo fide; AOS Bulletin Vol 50 #9 1981; Orchid Digest Vol 46 No 6 1982 drawing/photo fide; AOS Bulletin Vol 54 #10 1985 as C reginae var alba photo fide; AOS Bulletin Vol 55 No 1 1986 photo; AOS Bulletin Vol 56 No 1 1987 photo fide; AOS Bulletin Vol 56 No 9 1987; The Manual of Cultivated Orchids Bechtel, Cribb, Launert 1992 photo fide; Schlechteriana Vol 4 No 1/2 1993 photo fide; Schlechteriana Vol 4 No 4 1993 photo fide; AOS Bulletin Vol 63 No 3 1994 as C reginae fma albaphoto fide; AOS Bulletin Vol 64 No 4 1995 Photo fide; AOS Bulletin Vol 66 No 2 1997 photo fide; AOS Bulletin Vol 66 No 6 1997 photo fide; Orchid Digest Vol 62 #1 1998 photo fide; Orchid Digest Vol 63 #2 1999 photo fide; Orchid Digest Vol 63 #3 1999 photo fide; AOS Bulletin Vol 68 No 4 1999 photo fide; AOS Bulletin Vol 69 No 5 2000 photo fide; AOS Bulletin Vol 69 No 9 2000 photo fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 40 pg 2492 - 2564 Brieger 2000; AOS Bulletin Vol 72 No 3 2003 photo fide; AOS Bulletin Vol 73 No 4 2004 photo fide; AOS Bulletin Vol 73 No 5 2004 photo fide; AOS Bulletin Vol 73 No 8 2004 photo fide; AOS Bulletin Vol 74 No 10 2005 photo fide; AOS Bulletin Vol 75 No 10 2006 photo fide; Orchid Digest Vol 70 #1 2006 photo ok; Orchid Digest Vol 71 No 1 2007 photo; Orchid Digest Vol 71 #1 2008 photo fide; AOS Bulletin Vol 78 No 5 2009 photo fide; AOS Bulletin Vol 78 #6 2009 photo fide; AOS Bulletin vol 78 No 9 2009 photo fide; Orchid Digest Vol 78 #1 2012 photo fide; AOS Bulletin Vol 82 #12 2013 photo fide; AOS Bulletin Vol 83 #7 2014 drawing fide; AOS Bulletin Vol 84 # 12 2015 photo fide; AOS Bulletin Vol 85 #1 2016 drawing fide; AOS Bulletin Vol 85 #3 2016 photo fide; AOS Bulletin Vol 88 #5 2019 drawing fide; AOS Bulletin Vol 89 #1 2020 drawing/photo fide; AOS Bulletin Vol 89 #2 2020 stamp fide; The Orchid Review Vol 128 No 1330 June 2020 stamp fide;
Cypripedium reginae f. albolabium Fernald & B.G.Schub. 1948
A white color form of the previous species
References <W3 Tropicos, Kew Monocot list , IPNI ; AOS Bulletin Vol 72 No 2 2003 photo fide; Wild Orchids of the Prairies and Great Plains of North America P M Brown 2006; AOS Bulletin vol 78 No 9 2009 photo fide;
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