Platanthera grandiflora (Bigelow) Lindl. 1835


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

P grandiflora var alba

Photos by Downs Matthews


Common Name The Large Flowered Platanthera

Flower Size .8 to 1.2" [2 to 3 cm]

Found in New Brunswick, Newfoundland, Nova Scotia, Quebec, Ontario, Prince Edward Islands, Maine, New Hampshire, Vermont, Connecticut, Massachusetts, Rhode Island, New York, Pennsylvania, New Jersey, Ohio, Michigan, W Virginia, Maryland, Tennesee and North Carolina as a large to giant sized, cold growing terrestrial with 2 to 6, cauline, lancolate, keeled, basally clasping leaves that are gradually reduced to bracts above that blooms in the late spring and early summer on a terminal, racemose, 48" [120 cm] long, erect, loosely to densely 30 to 65 flowered inflorescence with lanceolate, as long as the ovary floral bracts and carrying lavender scented flowers

Synonyms Blephariglottis grandiflora (Bigelow) Rydb. in N.L.Britton 1901; Blephariglottis grandiflora f. albiflora (E.L.Rand & Redfield) Baumbach & P.M.Br. 2009; Blephariglottis grandiflora f. bicolor (P.M.Br.) Baumbach & P.M.Br. 2009; Blephariglottis grandiflora f. carnea (P.M.Br.) Baumbach & P.M.Br. 2009; Blephariglottis grandiflora f. mentotonsa (Fernald) Baumbach & P.M.Br. 2009; Blephariglottis psycodes var. grandiflora (Bigelow) J.H.Schaffn. 1914; Fimbriella grandiflora (Bigelow) Efimov 2008 publ. 2009; Fimbriella psycodes var. grandiflora (Bigelow) Butzin 1981; Habenaria fimbriata (Aiton) R.Br. in W.T.Aiton 1813; Habenaria fimbriata f. albiflora E.L.Rand & Redfield 1894; Habenaria fimbriata f. mentotonsa Fernald 1946; Habenaria grandiflora (Bigelow) Torr. ex L.C.Beck 1833; Habenaria psycodes var. grandiflora (Bigelow) A.Gray 1840; Orchis fimbriata Aiton 1789; *Orchis grandiflora Bigelow 1824; Platanthera fimbriata (Aiton) Lindl. 1835; Platanthera fimbriata var. grandiflora (Bigelow) Hook. 1839; Platanthera grandiflora f. albiflora (E.L.Rand & Redfield) Catling 1982; Platanthera grandiflora f. bicolor P.M.Br. 1995; Platanthera grandiflora f. carnea P.M.Br. 1995; Platanthera grandiflora f. mentotonsa (Fernald) P.M.Br.1988; Platanthera psycodes var. grandiflora (Bigelow) Torr. 1843

References W3 Tropicos, Kew Monocot list , IPNI ; Studies in the Family Orchidaceae Vol 4 Ames 1910 as Habenaria fimbriata; Die Orchideen Schlechter 1915 as Platanthera fimbriata; Encyclopedia of Cultivated Orchids Hawkes 1965 as P fimbriata; AOS Bulletin Vol 35 No 6 1966 as Habenaria fimbriata; AOS Bulletin Vol 36 #11 1967 as H fimbriata photo fide; The Native Orchids of the United States and Canada Luer 1975 drawing/photos fide; Die Orchideen 3 Auflage Bd 1 Sonderabdruck aus Schlechter Lieferung 4 193 to 256 Brieger, Maatsch and Senghas 1973 photo fide; AOS Bulletin Vol 48 No 11 1979 photo fide; Schlechteriana Vol 4 No 4 1993 photo fide; AOS Bulletin Vol 63 No 4 1994 photo fide; Orchid Digest Vol 63 #2 1999 photo fide; AOS Bulletin Vol 70 No 1 2001 photo fide; Wild Orchids of SE USA PM Brown 2004; AOS Bulletin vol 78 No 8 2009 photo fide; AOS Bulletin Vol 85 #1 2016 photo fide; AOS Bulletin Vol 89 #2 2020 stamp fide; The Orchid Review Vol 128 No 1330 June 2020 stamp fide;