| Pottiaceae | ! |
Oxystegus arboreus
| (Mitt.) R.H. Zander | Acad. Biol. 2(4): 6 | 2024 |
| Pottiaceae | |
Oxystegus burmensis
| (E.B. Bartram) Gangulee | Mosses E. India 3: 653 | 1972 |
| Pottiaceae | * |
Oxystegus canaliculatus
| Hilp. | Beih. Bot. Centralbl., Abt. 2 50(2): 667 | 1933 |
| Pottiaceae | |
Oxystegus circinatus
| (Besch.) Hilp. | Beih. Bot. Centralbl., Abt. 2 50(2): 670, 702 | 1933 |
| Pottiaceae | |
Oxystegus crassicostatus
| D.H. Norris & T.J. Kop. | Acta Bot. Fenn. 137: 90. f. 2: g–k, 8 | 1989 |
| Pottiaceae | |
Oxystegus cuspidatus
| (Dozy & Molk.) P.C. Chen | Hedwigia 80: 143. 13 f. 7 | 1941 |
| Pottiaceae | |
Oxystegus cylindricus
| (Bruch ex Brid.) Hilp. | Beih. Bot. Centralbl., Abt. 2 50(3): 610 | 1933 |
| Pottiaceae | |
Oxystegus cylindrotheca
| (Mitt.) Gangulee | Nova Hedwigia 12: 430 | 1966 [1967] |
| Pottiaceae | ! |
Oxystegus daldinianus
| (De Not.) Köckinger, O. Werner & Ros | Nova Hedwigia Beih. 138: 39 | 2010 |
| Pottiaceae | |
Oxystegus fallax
| (Herzog) Hilp. | Beih. Bot. Centralbl., Abt. 2 50(2): 620 | 1933 |
| Pottiaceae | |
Oxystegus hibernicus
| (Mitt.) Hilp. | Beih. Bot. Centralbl., Abt. 2 50(3): 667 | 1933 |
| Pottiaceae | ! |
Oxystegus hyalinoblastus
| (Broth.) R.H. Zander | Acad. Biol. 2(4): 6 | 2024 |
| Pottiaceae | |
Oxystegus indicus
| (Dixon & P. de la Varde) Hilp. | Beih. Bot. Centralbl., Abt. 2 50(2): 670, 702 | 1933 |
| Pottiaceae | |
Oxystegus khasianus
| (Mitt.) Gangulee | Nova Hedwigia 8: 149 | 1964 |
| Pottiaceae | |
Oxystegus leptotortella
| (Müll. Hal.) Hilp. | Beih. Bot. Centralbl., Abt. 2 50(2): 667 | 1933 |
| Pottiaceae | |
Oxystegus leptotortuosum
| (Müll. Hal.) Hilp. | Beih. Bot. Centralbl., Abt. 2 50(2): 667 | 1933 |
| Pottiaceae | |
Oxystegus lignicola
| (Herzog) Hilp. | Beih. Bot. Centralbl., Abt. 2 50(3): 667 | 1933 |
| Pottiaceae | |
Oxystegus linearis
| (Sw.) Hilp. | Beih. Bot. Centralbl., Abt. 2 50(2): 667 | 1933 |
| Pottiaceae | |
Oxystegus longifolius
| (Griff.) Hilp. | Beih. Bot. Centralbl., Abt. 2 50(2): 667 | 1933 |
| Pottiaceae | ! |
Oxystegus maragniphyllus
| R.H. Zander & Eckel | Bryologist 122(4): 569, 1 | 2019 |
| Pottiaceae | |
Oxystegus melanostoma
| (Mitt.) Hilp. | Beih. Bot. Centralbl., Abt. 2 50(2): 667 | 1933 |
| Pottiaceae | ! |
Oxystegus minor
| Köckinger, O. Werner & Ros | Nova Hedwigia Beih. 138: 43 | 2010 |
| Pottiaceae | |
Oxystegus obtusifolius
| Hilp. | Beih. Bot. Centralbl., Abt. 2 50(2): 667 | 1933 |
| Pottiaceae | |
Oxystegus perannulatus
| (Dixon & P. de la Varde) M.N. Aziz & Vohra | Pottiac. India 8, 71 | 2008 |
| Pottiaceae | |
Oxystegus recurvifolius
| (Taylor) R.H. Zander | Lindbergia 8: 187 | 1982 [1983] |
| Pottiaceae | |
Oxystegus rhodesiae
| (Broth.) Hilp. | Beih. Bot. Centralbl., Abt. 2 50(2): 667 | 1933 |
| Pottiaceae | |
Oxystegus sinuosus
| (Mitt.) Hilp. | Beih. Bot. Centralbl., Abt. 2 50(2): 667 | 1933 |
| Pottiaceae | |
Oxystegus soulae
| (Müll. Hal.) Wijk & Margad. | Taxon 9: 191 | 1960 |
| Pottiaceae | |
Oxystegus spiralis
| (Grout) H.A. Crum & L.E. Anderson | Bryologist 92: 533 | 1989 |
| Pottiaceae | ! |
Oxystegus stenocarpus
| (Thér.) R.H. Zander | Acad. Biol. 2(4): 6 | 2024 |
| Pottiaceae | |
Oxystegus stenophyllus
| (Mitt.) Gangulee | Nova Hedwigia 12: 429 | 1966 [1967] |
| Pottiaceae | |
Oxystegus subduriusculus
| (Müll. Hal.) Hilp. | Beih. Bot. Centralbl., Abt. 2 50(2): 667 | 1933 |
| Pottiaceae | |
Oxystegus svihlae
| (E.B. Bartram) Gangulee | Mosses E. India 3: 654 | 1972 |
| Pottiaceae | |
Oxystegus syrrhopodontoides
| (Herzog) Hilp. | Beih. Bot. Centralbl., Abt. 2 50(2): 620 | 1933 |
| Pottiaceae | |
Oxystegus tenuirostris
| (Hook. & Taylor) A.J.E. Sm. | J. Bryol. 9: 393 | 1977 |
| Pottiaceae | |
Oxystegus uncinifolius
| (Dixon) M.N. Aziz & Vohra | Pottiac. India 8, 66 | 2008 |
| Pottiaceae | |
Oxystegus verrucosus
| (Broth. & Paris) Hilp. | Beih. Bot. Centralbl., Abt. 2 50(2): 667 | 1933 |