Ophioglossum dendroneuron
| Ophioglossum dendroneuron E. P. St. John, in Small, Ferns S.E. States 364. 1938. | | TYPE: FLORIDA: Citrus Co.: Between Lecanto and Crystal River, 10 Dec 1936, St. John 568 (holotype: NY). |
Ophioglossum mononeuron
| Ophioglossum mononeuron E. P. St. John, in Small, Ferns S.E. States 364. 1938. | | TYPE: FLORIDA: Citrus Co.: Crystal River, 10 Dec 1936, St. John s.n. (holotype: NY?). |
Ophioglossum nudicaule forma minus
| Ophioglossum nudicaule Linnaeus f., forma minus (R. T. Clausen) M. Broun, Index N. Amer. Ferns 123. 1938. | BASIONYM: Ophioglossum nudicaule Linnaeus f., var. minus R. T. Clausen 1938. | |
Ophioglossum nudicaule var. minus
| Ophioglossum nudicaule Linnaeus f., var. minus R. T. Clausen, Mem. Torrey Bot. Club 19(2): 148, f. 29. 1938. | | TYPE: FLORIDA: Lee Co.: Vicinity of Fort Myers, 4 Sep 1916, Standley 354 (holotype: US; isotypes: GH, NY). |
Ophioglossum nudicaule var. tenerum
| Ophioglossum nudicaule Linnaeus f., var. tenerum (Mettenius ex Prantl) R. T. Clausen, Mem. Torrey Bot. Club 19(2): 146. 1938. | BASIONYM: Ophioglossum tenerum Mettenius ex Prantl 1883. | |
Ophioglossum nudicaule var. typicum
| Ophioglossum nudicaule Linnaeus f., var. typicum R. T. Clausen, Mem. Torrey Bot. Club 19(2): 144. 1938, nom. inadmiss. | BASIONYM: Ophioglossum nudicaule Linnaeus f. 1782. | |
Ophioglossum pumilio
| Ophioglossum pumilio E. P. St. John, in Small, Ferns S.E. States 361. 1938. | | TYPE: FLORIDA: Citrus Co.: E of Floral City, 5 Jan 1937, St. John 578 (holotype: NY?). |
Ophioglossum tenerum
| Ophioglossum tenerum Mettenius ex Prantl, Ber. Deutsch. Bot. Ges. 1: 352. 1883. | | TYPE: GEORGIA: |
Ophioglossum vulgatum var. nudicaule
| Ophioglossum vulgatum Linnaeus, var. nudicaule (Linnaeus f.) D. C. Eaton, in Chapman, Fl. South. U.S. 599. 1860. | BASIONYM: Ophioglossum nudicaule Linnaeus f. 1782. | |
Ophioglossum ellipticum
| Ophioglossum ellipticum Hooker & Greville, Icon. Filic. 1: pl. 40. 1827. | | TYPE: GUYANA: Demerara, s.d., Parker s.n. (holotype: K). |
Ophioglossum gomezianum
| Ophioglossum gomezianum Welwitsch ex A. Braun, in Kuhn, Filic. Afr. 176. 1868. | | TYPE: ANGOLA: |
Ophioglossum luerssenii
| Ophioglossum luerssenii Prantl, Ber. Deutsch. Bot. Ges. 1: 352. 1883. | | TYPE: AUSTRALIA: Queensland: |
Ophioglossum macrorhizum
| Ophioglossum macrorhizum Kunze, Farrnkräuter 1: 57, t. 29(1). 1840. | | TYPE: FRENCH GUIANA: Without data, Leprieur s.n. (holotype: LZ(destroyed?)). |
Ophioglossum melpillense
| Ophioglossum melpillense Remy, in Gay, Fl. Chil. 6: 542. 1854. | | TYPE: CHILE: |
Ophioglossum moluccanum forma pumilum
| Ophioglossum moluccanum Schlechtendal, forma pumilum Raciborski, Natuurk.Tijdschr. Ned.-Indië 59: 237, t. 2(2-3). 1900. | | TYPE: JAVA: |
Ophioglossum nudicaule var. vulcanicum
| Ophioglossum nudicaule Linneaus f., var. vulcanicum R. T. Clausen, Mem. Torrey Bot. Club 19(2): 150, f. 31, 32. 1938. | | TYPE: PANAMA: Chiriqui: Llanos del Volcan, s.d., Martin 2798 (holotype: US). |
Ophioglossum parvifolium
| Ophioglossum parvifolium Greville & Hooker, Bot. Misc. 3: 218. 1833. | | TYPE: INDIA: |
Ophioglossum pumilum
| Ophioglossum pumilum Alderwerelt van Rosenburgh, Malay Ferns Suppl. 1: 453. 1916. | | TYPE: INDONESIA: Java: |
Ophioglossum schmidii
| Ophioglossum schmidii Kunze, Linnaea 24: 246. 1851. | | TYPE: INDIA: |
Ophioglossum spruceanum
| Ophioglossum spruceanum Fée, Crypt. Vasc. Brésil 1: 218, pl. 52(3). 1869. | | TYPE: BRAZIL: Amazonas: Near São Gabriel de Cachoeira, Rio Negro, s.d., Spruce 2041 (holotype: RB; isotypes: BM, US). |
Ophioglossum vulgatum var. surinamense
| Ophioglossum vulgatum Linnaeus, var. surinamense Luerssen, J. Mus. Godeffroy 8: 247. 1875. | | TYPE: SURINAM: |
Ophioglossum ypanemense
| Ophioglossum ypanemense Martius, Icon. Pl. Crypt. 39, 180; pl. 73(1). 1834. | | TYPE: BRAZIL: |