Platanthera dilatata (Pursh) Lindl. ex L.C. Beck 1833

Inflorescence Photos by Jim Fowler and his P-Base Orchid North American Orchid Website

Common Name The Broad Platanthera - In the USA and Canada Leafy White Orchid - Bog Candles - Tall White Bog Orchid - White Rein Orchid - Tall White Northern Bog Orchid - The Scented Bottle Orchid

Flower Size about 1/2" [to 1.25 cm]

Found in most all of Canada and the western USA as a large sized, cold growing terrestrial of bogs, swamp and damp meadows with an elongated stem carrying about 12, linear-lanceolate, the largest basally clasping below, becoming bract-like above leaves that blooms in the summer on an erect, terminal, 1 to 2' [30 to 60 cm] long, many [70] flowered, racemose inflorescence with lanceolate, much longer than the ovary floral bracts and carrying delicately fragrant flowers.

Synonyms Habenaria borealis var. albiflora Cham. 1828; Habenaria dilatata (Pursh) Hook. 1825; Habenaria dilatata var. albiflora (Cham.) Correll 1943; Habenaria dilatata var. leucostachys (Lindl.) Ames 1910; Habenaria fragrans Niles 1904; Habenaria flagellans S.Watson 1880; Habenaria graminifolia (Rydb.) J.K. Henry 1915; Habenaria leptoceratitis J.K.Henry 1915; Habenaria leucostachys (Lindl.) S.Watson 1880; Habenaria leucostachys var. robusta (Rydb.) J.K.Henry 1915; Habenaria leucostachys var. virida Jeps. 1921; Habenaria pedicellata S.Watson 1877; Limnorchis dilatata (Pursh) Rydb 1901; Limnorchis foliosa Rydb. 1901; Limnorchis fragrans Rydb. 1901; Limnorchis graminifolia Rydb. 1901; Limnorchis leptoceratitis Rydb. 1901; Limnorchis leucostachys (Lindl.) Rydb. 1900; Limnorchis leucostachys subsp. robusta (Rydb.) Piper & Beattie 1915; Orchis agastachys Fisch. ex Lindl. 1835; *Orchis dilatata Pursh 1814; Piperia dilatata (Pursh) Szlach. & Rutk. 2000; Piperia dilatata var. albiflora (Cham.) Szlach. & Rutk. 2000; Piperia dilatata var. leucostachys (Lindl.) Szlach. & Rutk. 2000; Platanthera cylindrica Bach.Pyl. 1826; Platanthera dilatata (Pursh) Lindl. ex L.C. Beck 1833; Platanthera dilatata var. albiflora (Cham.) Ledeb. 1852; Platanthera dilatata var. angustifolia Hook. 1839; Platanthera dilatata var. leucostachys (Lindl.) Luer 1975; Platanthera graminea Lindl. 1835; Platanthera hyperborea subsp. dilatata (Pursh) Rchb.f. 1851; Platanthera hyperborea subsp. graminea Rchb.f. 1851 Platanthera hyperborea var. dilatata (Pursh) Kraenzl. 1899; Platanthera hyperborea var. leucostachys (Lindl.) Kraenzl. 1901; Platanthera leucostachys Lindl. 1835; Platanthera lindleyi Steud. 1841; Tulotis albiflora Raf. 1833; Tulotis fragrans Raf. 1833

References W3 Tropicos, Kew Monocot list , IPNI ; Studies in the Family Orchidaceae Vol 4 Ames 1910 as Habenaria dilitata; Studies in the Family Orchidaceae Vol 4 Ames 1910 as Habenaria dilitata var leucostachys; Die Orchideen Schlechter 1915 as Platanthera dilatata; Native Orchids of North America Correll 1950 as Habenaria dilitata drawing fide; Native Orchids of North America Correll 1950 as Habenaria dilitata var albiflora drawing fide; Native Orchids of North America Correll 1950 as Habenaria dilitata var leucostachys drawing fide; AOS Bulletin Vol 29 No 5 1960; Encyclopedia of Cultivated Orchids Hawkes 1965 as Platanther dilatata; The Native Orchids of the United States and Canada Luer 1975 drawing/photos fide; The Native Orchids of the United States and Canada Luer 1975 as P dilitata var albiflora drawing/photos fide; The Native Orchids of the United States and Canada Luer 1975 as P dilitata var leucostachys drawing/photos fide; AOS Bulletin Vol 48 No 6 1979 photo; AOS Bulletin Vol 49 No 2 1980 photo as Platanthera dilatata; AOS Bulletin Vol 61 No 5/463 1992 photo as Platanthera dilatata; Schlechteriana Vol 4 No 4 1993 as Platanthera dilatata; AOS Bulletin Vol 63 No 4 1994 photo as Platanthera diltata; AOS Bulletin Vol 66 No 3 1997 photo as Platanthera dilatata var leucostachys; AOS Bulletin Vol 69 No 11 2000 photo as Platanthera dilitata; AOS Bulletin Vol 72 No 9 2003 photo;

Platanthera dilatata var. albiflora (Cham.) Ledeb. 1852 Photos by Carl Luer

Differs for the type mostly in the denser inflorescence and in the spur being shorter than the lip.

Synonyms Habenaria borealis var. albiflora Cham. 1828; Habenaria dilatata var. albiflora (Cham.) Correll 1943; Piperia dilatata var. albiflora (Cham.) Szlach. & Rutk. 2000; Platanthera graminea Lindl. 1835; Platanthera hyperborea var. graminea Rchb.f. 1851; Platanthera lindleyi Steud. 1841; Tulotis albiflora Raf. 1833;

Platanthera dilatata var. leucostachys (Lindl.) Luer 1975 Photo by Carl Luer

Differs from the type mostly in the spur being 1 1/2 times longer than the lip.

Synonyms Habenaria dilatata var. leucostachys (Lindl.) Ames 1910; Habenaria flagellans S.Watson 1880; Habenaria graminifolia (Rydb.) J.K. Henry 1915; Habenaria leptoceratitis J.K.Henry 1915; Habenaria leucostachys (Lindl.) S.Watson 1880; Habenaria leucostachys var. robusta (Rydb.) J.K.Henry 1915; Habenaria leucostachys var. virida Jeps. 1921; Habenaria pedicellata S.Watson 1877; Limnorchis graminifolia Rydb. 1901; Limnorchis leucostachys (Lindl.) Rydb. 1900; Limnorchis leucostachys subsp. robusta (Rydb.) Piper & Beattie 1915; Piperia dilatata var. leucostachys (Lindl.) Szlach. & Rutk. 2000; Platanthera hyperborea var. leucostachys (Lindl.) Kraenzl. 1901; Platanthera leucostachys Lindl. 1835; Platanthera lindleyi Steud. 1841;

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