Cypripedium calceolus L. var. parviflorum (Salisb.) Fernald 1946
SECTION Cypripedium SUBSECTION Cypripedium
Photos by Joseph Dougherty
C calceolus var parviflorum ssp makasin
Photo by Greg Warner
MID
to Mid
Common Name Yellow Lady's Slipper - The Shoe-Carrying Cypripedium
Flower Size Up to 6 1/2" [up to 16.25]
Found in northeastern America and adjacent Canadian areas, as a medium sized, cold growing terrestrial orchid from swamps and bogs from sea level to 2500 meters with short stems carrying 3 to 5, plicate, petiolate, elliptic to ovate or ovate-lanceolate, acute leaves which blooms in the mid-spring through mid-summer on a slender stalked, erect, terminal inflorescence with a solitary [rarely 2] flower and a leaf-like bract arising from the center of the semi-mature leaves.
Synonyms Calceolus alternifolius St. Lager 1880; Calceolus alternifolius St.-Lég. 1889; Calceolus marianus Crantz 1769; Calceolus parviflorus (Salisb.) Nieuwl. 1913; Criosanthes parviflora Raf. 1836; Cypripedium alternifolium St.-Lag. 1880; Cypripedium assurgens Raf. 1833; Cypripedium bifidum Raf. 1833; Cypripedium boreale Salisb. 1796; Cypripedium bulbosum var. parviflorum (Salisb.) Farw. 1913; Cypripedium calceolus subsp. parviflorum (Salisb.) Hultén 1967 publ. 1968; Cypripedium cruciatum Dulac 1868; Cypripedium ferrugineum Gray 1821; Cypripedium hirsutum var. parviflorum (Salisb.) Rolfe 1907; Cypripedium luteum Aiton ex Raf. 1828; Cypripedium luteum var. parviflorum (Salisb.) Raf. 1828; Cypripedium makasin Farw. 1918; *Cypripedium parviflorum Salisb. 1791; Cypripedium parviflorum f. albolabium Magrath & J.L.Norman 1989; Cypripedium parviflorum var. exiliens Sheviak 2010; Cypripedium parviflorum var. makasin (Farw.) Sheviak 1993; Cypripedium parviflorum var. parviflorum; Cypripedium parvulum Fedde 1915; Cypripedium pubescens var. makasin Farw. 1918
References W3 Tropicos, Kew Monocot list , IPNI ; Die Orchideen Schlechter 1915 as C parviflorum; Atlas des Orchidees Cultivees Constantin 1920 as C hirsutm var parvifloram drawing fide; AOS Bulletin Vol 32 No 6 1963 as C parviflorum; ; AOS Bulletin Vol 37 No 4 1968 as C parviflorum photo fide; 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 as C parviflorum drawing ok; AOS Bulletin Vol 44 #5 1975 photo fide; The Native Orchids of the United States and Canada Luer 1975 drawing/photo fide; AOS Bulletin Vol 50 No 6 1981 as C calceolus var parviflorum photo fide; Orchid Digest Vol 46 No 6 1982 photo fide as C parviflorum; Orchid Digest Vol 49 no 2 1985 as C parviflorum drawing fide; AOS Bulletin Vol 61 No 6/548-9 1992 photo fide; Schlechteriana Vol 4 No 4 1993 as C parviflorum; AOS Bulletin Vol 63 No 4 1994 photo fide; AOS Bulletin Vol 64 No 6 1995 as C parviflorum photo fide; Orchid Digest Vol 62 #1 1998 as C parviflorum var makasin photo fide; AOS Bulletin Vol 68 No 4 1999 as C calceolus var parviflorum photo fide; AOS Bulletin Vol 69 No 5 2000 photo fide; AOS Bulletin Vol 69 No 9 2000 as C parviflorum; Rudolf Schlechter Die Orchideen Band 1C lieferung 40 pg 2492 - 2564 Brieger 2000 as C parviflorum; AOS Bulletin Vol 70 No 1 2001 photo fide; AOS Bulletin Vol 71 No 11 2002 drawing; AOS Bulletin Vol 73 No 5 2004 photo fide; AOS Bulletin Vol 73 No 8 2004 photo fide; AOS Bulletin Vol 74 #10 2005 photo fide; Orchid Digest Vol 71 No 1 2007 as C parviflorumphoto fide; Orchid Digest Vol 71 No 3 2007 photo; Orchid Digest Vol 71 #1 2008 photo fide; AOS Bulletin Vol 77 No 6 2008 photo fide; AOS Bulletin vol 78 No 5 2009 photo fide; AOS Bulletin vol 78 No 9 2009 photo fide; Orchid Digest Vol 74 #3 2010 photo fide; AOS Bulletin Vol 79 #6 2010 photo fide; AOS Bulletin Vol 80 #4 2011 photo fide; AOS Bulletin Vol 82 #10 2013 photo fide;AOS Bulletin Vol 83 #6 2014 photo fide; AOS Bulletin Vol 85 #3 2016 photo fide; AOS Bulletin Vol 88 #3 2019 as C parviflorum var exillens photo fide; AOS Bulletin Vol 89 #1 2020 as C parviflorumdrawing/photo fide; AOS Bulletin Vol 89 #11 2020 photo fide; The Orchid Review Vol 1278 No 1330 June 2020 photo fide;
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