Platanthera orbiculata (Pursh) Lindl. 1835
Photos by © Jim Fowler and his P-Base Orchid North American Orchid Website
Drawing by © Hooker and Exot. Fl. 2: t. 145 Hooker 1825
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Common Name The Round-Leafed Platanthera or Heal All Orchid
Flower Size .8" [2 cm]
Found in Canada, Alaska and the northern US growing deep woods, swamps, in acid soil at altitudes around 450 meters as a medium sized, cold to cool growing terrestrial from with 2 subopposite, basal, broadly elliptic to suborbicular, fleshy, shiny leaves spread flat on the ground that blooms in the late spring through summer on a terminal, erect, 1 to 2 1/2' [30 to 75 cm] long, many flowered, racemose inflorescence with lanceolate, shorter than the ovary floral bracts and carrying fragrant flowers.
Synonyms Habenaria macrophylla Goldie 1822; Habenaria orbiculata [Pursh.]Torr. 1826; Habenaria orbiculata f. macrophylla (Goldie) F.J.A.Morris & Eames 1929; Habenaria orbiculata var. lehorsii Fernald 1950; Habenaria orbiculata var. longifolia Clute 1904; Habenaria orbiculata var. macrophylla (Goldie) B.Boivin 1967; Habenaria orbiculata var. menziesii (Lindl.) Fernald 1950; Habenaria orbiculata var. trifolia Mousley 1934; Habenaria orbiculata var. trifolia Mousley 1934; Lysias macrophylla (Goldie) House 1906; Lysias orbiculata (Pursh) Rydb. 1900; Lysias orbiculata var. pauciflora Jenn. 1920; *Orchis orbiculata Pursh. 1814; Platanthera macrophylla (Goldie) P.M.Br. 1988; Platanthera menziesii Lindl. 1835; Platanthera orbiculata f. lehorsii (Fernald) P.M.Br. 1995; Platanthera orbiculata f. longifolia (Clute) P.M.Br. 2006; Platanthera orbiculata f. pauciflora (Jenn.) P.M.Br. 2006; Platanthera orbiculata f. trifolia (Mousley) P.M.Br. 1995; Platanthera orbiculata var. lehorsii (Fernald) W.J.Schrenk 1977;
References W3 Tropicos, Kew Monocot list , IPNI ;
Fl. Amer. Sept. 2: 588 Pursh. 1813 as Orchis orbiculata
Exot. Fl. 2: t. 145 Hooker 1825 as Habenaria orbiculata
Exot. Fl. 2: t. 145 Hooker 1825 as Habenaria orbiculata drawing fide
* Gen. Sp. Orchid. Pl.: 286 Lindley 1835
Gen. Sp. Orchid. Pl.: 286 Lindley 1835 as P menziesii
Mem. New York Bot. Gard. 1: 103 Rybd 1900 as Lysias orbiculata
Studies in the Family Orchidaceae Vol 4: 142 Ames 1910 as Habenaria orbiculata;
J. Washington Acad. Sci. 10: 453 Jenn. 1920 as Lysias orbiculata var pauciflora;
Orchid Rev. 42: 112 Mousely 1934 as Habenaria orbiculata var trifolia;
Rhodora 52: 61 Fernald 1950 as Habenaria orbiculata var lehorsii
Rhodora 52: 60 Fernald 1950 as Habenaria orbiculata Photo Fide
Rhodora 52: 62 Fernald 1950 as Habenaria orbiculata
Rhodora 52: 63 Fernald 1950 as Habenaria orbiculata var menziesii
Native Orchids of North America: 93 Correll 1950 as Habenaria orbiculata
Native Orchids of North America: 94 Correll 1950 as Habenaria orbiculata drawing fide;
Encyclopedia of Cultivated Orchids Hawkes 1965;
AOS Bulletin Vol 44 #5 1975 as Habenaria orbiculata photo fide;
The Native Orchids of the United States and Canada Luer 1975 drawing/photos fide;
Orchidee (Hamburg) 28: 69 W J Shrenk 1977 as P orbiculata var lehorsii;
Schlechteriana Vol 4 No 4 1993 as Platanthera macrophylla photo fide;
N. Amer. Native Orchid J. 1: 15 P M Br 1995 as P orbiculata f lehorsii
N. Amer. Native Orchid J. 1: 15 P M Br 1995 as P orbiculata f trifolia;
Orchid Digest Vol 63 #3 1999 photo fide;
Wild Orchids Canad. Marit. & N. Gr. Lakes: 284 P M Br. 2006 as P orbiculata f longifolia;
Wild Orchids Canad. Marit. & N. Gr. Lakes: 284 P M Br. 2006 as P orbiculata f pauciflora
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Platanthera orbiculata var. macrophylla (Goldie) Luer 1975
Photo by © Carl Luer
Photo by © Al Menk and his Picasa Orchid Photo Website
Notice the much larger leaves, the compact inflorescence and the longer spur which separates this variety from the type.
Synonyms Habenaria macrophylla Goldie 1822; Habenaria orbiculata f. macrophylla (Goldie) F.J.A.Morris & Eames 1929; Habenaria orbiculata var. macrophylla (Goldie) B.Boivin 1967; Lysias macrophylla (Goldie) House 1906; macrophylla (Goldie) P.M.Br. 1988
References W3 Tropicos, Kew Monocot list , IPNI ;
Edinburgh Philos. J. 6: 331 Goldie 1822 as Habenaria macrophylla
Amer. Bot. (Binghamton) 7: 56 Clute 1904 as Habenaria orbiculata var longifolia
Muhlenbergia 1: 127 House 1906 as Lysias macrophylla
Studies in the Family Orchidaceae Vol 4: 142 Ames 1910 as Habenaria macrophylla;
Our Wild Orchids: 122 F.J.A.Morris & E.A.Eames 1929 as Habenaria orbiculata f macrophylla
Naturaliste Canad. 94: 524 B Boivin 1967 as Habenaria orbiculata var macrophylla
*The Native Orchids of the United States and Canada Luer 1975 drawing/photos fide;
Wild Fl. Notes 3: 23 P M Br. 1988 as P macrophylla
Schlechteriana Vol 4 No 4 1993 as P macrophylla photo fide;
AOS Bulletin Vol 63 #4 1994 as P orbiculata var macrophylla;
AOS Bulletin Vol 69 No 11 2000 as P macrophylla photo fide;
AOS Bulletin Vol 81 #6 2012 photo fide;
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