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135.0000 Family Orchidaceae Juss.; Gen. Pl. [Jussieu] 64 (1789), nom. cons.
over 800 genera, more than 30.000 spp. worldwide, mostly tropical
Species listed in database: 30847; hybrids: 1493
= Apostasiaceae Lindl.; Nix. Pl. 22 (1833), nom. cons.
= Cypripediaceae Lindl.; Nix. Pl. 22 (1833)
= Limodoraceae Horan.; Char. Ess. Fam. 44 (1847)
= Liparidaceae Vines; Stud. Text-book Bot. 2: 567 (1895)
= Neottiaceae Horan.; Prim. Lin. Syst. Nat. 50 (1834)
= Neuwiediaceae R.Dahlgren ex Reveal & Hoogland; Bull. Mus. Natl. Hist. Nat., B, Adansonia, Sér. 4, 13: 91 (1991)
= Ophrydaceae Vines; Stud. Text-book Bot. 2: 566 (1895)
= Pycnanthaceae Ravenna; Onira 12(6): 29 (2011)
= Vanillaceae Lindl.; Key Bot. 73 (1835)
135.2105 Genus Isotria Raf.; Med. Repos. 5: 357 (1808)
Distribution: E-USA
Species listed in database: 2
= Odonectis Raf.; Med. Repos. 5: 357 (1808)
species :
Isotria medeoloides (Pursh) Raf.; Fl. Tellur. 4: 47 (1838)
Name: Small Whorled Pogonia
Distribution: E-Canada (Ontario); E-USA (Maine, Vermont, Delaware, Georgia, Illinois, New Hampshire, Connecticut, Massachusetts, New Jersey, New York, Ohio, Pennsylvania, Maryland, Virginia, North Carolina, South Carolina, Rhode Island, Michigan, Missouri, Tennessee)
72 CDN 74 USA 75 USA 78 USA
Conservation Status: IUCN E (Ontario, Connecticut, Delaware, Illinois, Massachusetts, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee), Ex/E (Maryland, New York, Vermont), Ex (District of Columbia), V (Georgia, Maine, New Hamp
Synonyms: hidden
= Arethusa medeoloides Pursh; Fl. Amer. Sept. [Pursh] 2: 591 (1814)
= Isotria affinis (Austin ex A.Gray) Rydb.; Man. Fl. N. States [Britton] 297 (1901)
= Odonectis affinis (Austin ex A.Gray) Schltr.; Bot. Jahrb. Syst. 45: 386 (1911)
= Pogonia affinis Austin ex A.Gray; Manual [A.Gray], ed. 5: 507 (1867)
species :
Isotria verticillata (Muhl. ex Willd.) Raf.; Med. Repos. 5: 357 (1808)
Name: Whorled Pogonia
Distribution: E-Canada (S-Ontario); E-USA (S-Maine, Vermont, New Hampshire, New York, Massachusetts, Rhode Island, Connecticut, New Jersey, Pennsylvania, Maryland, Delaware, West Virginia, Virginia, North Carolina, South Carolina, Alabama, Georgia, Mississippi, Louisiana, NE-Texas, Arkansas, E-Missouri, Kentucky, Tennessee, Ohio, Oklahoma, Michigan, Florida, Illinois, E-Indiana)
72 CDN 74 USA 75 USA 78 USA
Synonyms: hidden
= Arethusa verticillata Muhl. ex Willd.; Sp. Pl., ed. 4 [Willdenow] 4: 81 (1805)
= Odonectis verticillata (Muhl. ex Willd.) Raf.; Med. Repos. 5: 357 (1808)
= Pogonia verticillata (Muhl. ex Willd.) Nutt.; Gen. N. Amer. Pl. [Nuttall] 2: 192 (1818)
= Pogonia verticillata var. medeoloides Eaton; Man. Bot. [A.Eaton], ed. 3: 397 (1822)
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A complete, synonymic checklist of the Higher Plants of the World

Version 26.05 (May 20th, 2026)

Covering 359,646 accepted species,
8,890 hybrids, 47,679 accepted infraspecific taxa and 1,012,517 synonyms,
in total 1,428,732* names

[*about 20,000 dubious, "unplaced" names and about 4,000 invalid names (Art. 24.3) like "typicus" are deliberately omitted]

With complete, detailed distribution data (countries and regions) and literature references

Arranged in linear phylogenetic sequence reflecting true relationships

Fully searchable and continously updated

With 38,209 pictures of 15,787 species

Assembled through 40 years independently from other databases

In cooperation with Catalogue of Life