Cypripedium acaule Aiton 1789 SECTION Acaulia Photos by © Dave Janas
Photos by Joseph Dougherty
Photo by Carl Luer
EARLY
Common Name The Stemless Cypripedium - Moccasin Flower - The Short Inflorescence Cypripedium - The Pink Ladies Slipper
Flower Size 2" [5 cm]
Found in the eastern USA and Canada and south to Georgia and Alabama in hardwood and conifer forests, in swamps and bogs, dense woods along streams and in coastal dunes as a large sized, cold growing, erect, terrestrial plant from the higher and drier deciduous forests with 2, plicate, opposite, basal, elliptic, obtuse leaves that blooms in the spring and early summer on a terminal, slender, to 15" [45 cm] long inflorescence carrying a solitary, nodding, showy flower arising with the new leaves in the spring in the south through summer in the north.
Native Americans have historically used an extract from this species as a sedative and treatment for nervous disorders.
Synonyms Cypripedium acaule f. albiflora E.L.Rand & Redfield 1894; Cypripedium acaule f. biflorum P.M.Br. 1995; Cypripedium acaule f. lancifolia House 1924; Cypripedium catesbianum Raf. 1833; Cypripedium hirsutum Mill. 1768; Cypripedium humile Salisb. 1791; Cypripedium vittatum var. planum Raf. 1833; Fissipes acualis (Aiton) Small 1789; Fissipes acaulis f. lancifolia House 1920; Fissipes hirsuta f. albiflora (E.L.Rand & Redfield) Farw. 1938
References W3 Tropicos, Kew Monocot list , IPNI ; Die Orchideen Schlechter 1915 photo fide; Atlas des Orchidees Cultivees Constantin 1920 as Cypripedium hirsutum drawing hmm; Atlas des Orchidees Cultivees Constantin 1920 drawing good; AOS Bullletin Vol 32 No 6 1962 photo fide; Encyclopedia of Cultivated Orchids Hawkes 1965 drawing ok; AOS Bulletin Vol 38 #10 1969 photo fide; AOS Bulletin Vol 40 No 3 1970 drawing fide; AOS Bulletin Vol 39 No 11 1970 photo fide; Die Orchideen 3 Auflage Bd 1 Sonderabdruck aus Schlechter Lieferung 4 193 to 256 Brieger, Maatsch and Senghas 1971 photo ok; AOS Bulletin Vol 44 #5 1975 as C acaule album photo fide; The Native Orchids of the United States and Canada Luer 1975 drawing/photos fide; AOS Bulletin Vol 48 No 10 1979 photo ok; AOS Bulletin Vol 48 No 11 1979as C acaule var album photo fide; Orchid Digest Vol 46 No 6 1982 photo fide; AOS Bulletin Vol 52 No 12 1983 as C acaule var album photo fide; AOS Bulletin Vol 53 No 5 1984 drawing fide; Orchid Digest Vol 49 No 2 1985 photo fide; AOS Bulletin Vol 54 No 5 1985 photo fide; AOS Bulletin Vol 54 No 6 1985 photo fide; AOS Bulletin Vol 54 # 10 plant only photo ok; AOS Bulletin Vol 55 No 7 1986 photo fide; AOS Bulletin Vol 56 No 5 1987 photo fide; The Manual of Cultivated Orchids Bechtel, Cribb, Launert 1992 photo fide; AOS Bulletin Vol 61 No 5/445 1992 photo fide; AOS Bulletin Vol 62 No 4 1993 photo fide; Schlechteriana Vol 4 No 4 1993 photo fide; AOS Bulletin Vol 63 No 3 1994 as C acaule fma alba photo fide; AOS Bulletin Vol 63 No 4 1994 photo as C acaule var alba; 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 69 No 9 2000 photo fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 40 pg 2492 - 2564 Brieger 2000; Orchid Digest Vol 65 #3 2001 drawing fide; AOS Bulletin Vol 70 No 2 2001 photo fide; AOS Buletin Vol 71 No 5 2002 photo fide; AOS Bulletin Vol 72 No 9 2003 photo fide; AOS Bulletin Vol 73 No 11 2004 photo fide; AOS Bulletin Vol 75 No 2 2006 photo fide; AOS Bulletin Vol 75 No 3 2006 drawing fide; AOS Bulletin Vol 75 No 5 2006 photo fide; AOS Bulletin Vol 75 No 11 2006 photo fide; AOS Bulletin Vol 76 No 7 2007 photo fide; AOS Bulletin Vol 76 # 11 2007 photo fide; AOS Bulletin Vol 78 #4 2009 photo fide; AOS Bulletin Vol 78 No 5 2009 photo fide; AOS Bulletin Vol 79 #10 2010 photo fide; AOS Bulletin Vol 80 #8 2011 photo fide; Orchid Digest Vol 78 #1 2012 photo fide; AOS Bulletin Vol 81 #3 2012 photo fide; AOS Bulletin Vol 81 #6 2012 photo fide; AOS Bulletin Vol 84 #11 2015 photo fide; AOS Bulletin Vol 85 #3 2016 photo fide; AOS Bulletin Vol 89 #1 2020 Drawing fide
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