Neottia cordata (L.) Rich. 1817
Photos by Carl Luer
Photo by Joshua Horky Botanist, Lake Superior Research Institute - UW Superior
to 
and EARLY 
Common Name Heart Leafed Neottia in USA - The Heart Leaved Twayblade
Flower Size .2" [6mm]
Found in Iceland, Ireland, Great Britain, Norway, Sweden, Finland, Denmark, Spain, France, Belgium, Netherlands, Germany, Czechoslovakia, Switzerland, Austria, Italy, Yugoslavia, Turkey, Romania, Poland, Ukraine, western Russia, central Russia, eastern Russia, western Siberia, eastern Siberia, Japan, Aluetians, Alaska, Yukon, Alberta, British Columbia, Saskatchiwan, Manitoba, Ontario, Quebec, Newfoundland, Labrador, Prince Edward Islands, New Brunswick, Washington, Oregon, California, Idaho, Montana, Wyoming, Colorado, New Mexico, Minnesota, Wisconson, Michigan, Ohio, West Virginia, Pennsyvania, New York, New Jersey, Maryland, Washington DC, Virginia, North Carolina, Massachusetts, Conneticut, Rhode Island, New Hampshire, Vermont and Maine in wet mountainous forests or pine bogs in acidic soil as a miniature sized, cool to cold growing terestrial with glabrous then minutely pubescent above stems with basal sheaths carrying 1 to 2, sessile, nearly opposite, ovate-deltate to triangular leaves that blooms in the summer and early fall on an erect, racemose, to 2 2/5" [6 cm] long, [4 to 25] flowered inflorescence with a minute floral bract.
Synonyms Bifolium cordatum (L.) Nieuwl. 1913; Cymbidium cordatum (L.) Londes 1811; Diphryllum cordatum [L.] Kuntze 1891; Distomaea cordata (L.) Spenn. 1825; Epipactis cordata (L.) All. 1785; Helleborine cordata (L.) F.W.Schmidt 1793; Listera cordata (L.) R. Br. 1813; Listera cordata f. rubescens P.M.Br. 1995; Listera cordata f. tetraphylla Lavoie 1984; Listera cordata f. trifolia P.M.Br. 1995; Listera cordata f. trifolia (Asch. & Graebn.) Pauca & Stefur. 1972; Listera cordata lus. trifolia Asch. & Graebn. 1907; Listera cordata f. variegata P.M.Br. 1995; Listera cordata f. viridens P.M.Br. 1995; Listera cordata var. chlorantha Beauverd 1926; Listera cordata var. nephrophylla (Rydb.) Hultén 1937; Listera nephrophylla Rydb. 1900; Neottia nephrophylla (Rydb.) Szlach. 1995; *Ophrys cordata L. 1753; Ophrys nephrophylla (Rydb.) Rydb. 1905; Pollinirhiza cordata (L.) Dulac 1867; Serapias cordata (L.) Steud. 1821
References W3 Tropicos, Kew Monocot list , IPNI ; Die Orchideen Schlechter 1915; Atlas des Orchidees Cultivees Constantin 1920 drawing fide; Die Orchideen 3 Auflage Bd 1 Sonderabdruck aus Schlechter Lieferung 5 257- 320 Brieger, Maatsch and Senghas 1974 photo ok; The Native Orchids of the United States and Canada Luer 1975 as Listera cordata drawing/photos fide; The Native Orchids of the United States and Canada Luer 1975 as Listera cordataq var nephrophylla drawing/photos fide; Schlechteriana Vol 2 No 3 1991 photo fide; AOS Bulletin Vol 61 No 8 1992 as Listera cordata photo fide; Schlechteriana Vol 4 No 4 1993; Phylogeny and Classification of the Orchid Family Dressler 1993 photo fide; AOS Bulletin Vol 63 No 4 1994 as Listera cordata; AOS Bulletin Vol 69 No 11 2000 photo as Listera cordata fide; Orchids of Europe, North Africa and the Middle East Delforge 2005 as Neottia cordata; Orchid Digest Vol 70 #3 2006 as Listera cordataphoto fide; Orchid Digest Vol 74 #2 2010 photo fide; AOS Bulletin Vol 80 #4 2011 photo fide; AOS Bulletin Vol 84 #12 2015 photo fide; AOS Bulletin Vol 85 #4 2016 drawing fide; AOS Bulletin Vol 86 #2 2017 photo good;
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