| Orchidaceae | |
Physosiphon andinus
| Schltr. | Repert. Spec. Nov. Regni Veg. 10: 450 | 1912 |
| Orchidaceae | |
Physosiphon asaroides
| Kraenzl. | Orchis 2: 16 | 1907 |
| Orchidaceae | |
Physosiphon asperrimus
| (Luer) Luer | Monogr. Syst. Bot. Missouri Bot. Gard. 105: 252 | 2006 |
| Orchidaceae | |
Physosiphon bangii
| (Schltr.) Garay | Bot. Mus. Leafl. 34(2): 249 | 1956 |
| Orchidaceae | |
Physosiphon bradei
| Schltr. | Anexos Mem. Inst. Butantan, Secc. Bot. 1(4): 39 | 1922 |
| Orchidaceae | |
Physosiphon bragae
| Ruschi | Bol. Mus. Biol. Prof. Mello Leitao 27(Sér. Bot.): 1–4, f. 1 | 1970 |
| Orchidaceae | |
Physosiphon carinatus
| Lindl. | Edwards's Bot. Reg. 24: Misc. 72 | 1838 |
| Orchidaceae | |
Physosiphon cooperi
| Ames | Sched. Orch. 1: 2–3 | 1922 |
| Orchidaceae | |
Physosiphon deregularis
| (Barb. Rodr.) Cogn. | Fl. Bras. 3(4): 341–342 | 1896 |
| Orchidaceae | |
Physosiphon echinanthus
| (Barb. Rodr.) Cogn. | Fl. Bras. 3(4): 338 | 1895 |
| Orchidaceae | |
Physosiphon emarginatus
| (Lindl.) Lindl. | Edwards's Bot. Reg. 21: sub t. 1797 | 1835 |
| Orchidaceae | |
Physosiphon eximia
| (L.O. Williams) Garay | Orquideología 9: 119 | 1974 |
| Orchidaceae | |
Physosiphon eximium
| (L.O. Williams) Garay | Orquideología 9(2): 119 | 1974 |
| Orchidaceae | |
Physosiphon greenwoodii
| (Soto Arenas & Solano) Pfahl | Internet Orchid Sp. Photo Encycl. Nomencl. Notes 3(6): 1 | 2014 |
| Orchidaceae | |
Physosiphon guatemalensis
| Rolfe | Bull. Misc. Inform. Kew 1891(56): 197 | 1891 |
| Orchidaceae | |
Physosiphon herzogii
| Schltr. | Repert. Spec. Nov. Regni Veg. 12: 485 | 1913 |
| Orchidaceae | ** |
Physosiphon histrix
| Kraenzl. | Ark. Bot. 16(8): 7 | 1921 |
| Orchidaceae | ! |
Physosiphon hystrix
| Kraenzl. | Ark. Bot. 16(8): 7 | 1921 |
| Orchidaceae | |
Physosiphon inaequisepalus
| Schltr. | Repert. Spec. Nov. Regni Veg. Beih. 8: 50 | 1921 |
| Orchidaceae | |
Physosiphon lansbergii
| (Rchb. f.) L.O. Williams | Bot. Mus. Leafl. 7: 138 | 1939 |
| Orchidaceae | |
Physosiphon lehmannianus
| Kraenzl. | Not listed in IPNI | |
| Orchidaceae | |
Physosiphon lentiginosa
| (F. Lehm. & Kraenzl.) Brieger | Orchideen (ed. 3) 7(2528): 436 | 1975 |
| Orchidaceae | |
Physosiphon lindleyi
| Rolfe | Bull. Misc. Inform. Kew 1893(74–75): 61 | 1893 |
| Orchidaceae | ** |
Physosiphon loddigesii
| Lindl. ex Hook. | Icon. Pl. [Hooker] 6: t. 508 | 1843 |
| Orchidaceae | * |
Physosiphon loddigesii
| Lindl. | Edwards's Bot. Reg. 21: sub t. 1797 | 1835 |
| Orchidaceae | ** |
Physosiphon maculatus
| Rchb. f. | | |
| Orchidaceae | |
Physosiphon minor
| Rendle | J. Bot. 38(451): 275 | 1900 |
| Orchidaceae | |
Physosiphon minutiflorus
| Ames & C. Schweinf. | Sched. Orch. 8: 11–12, t. 22 | 1925 |
| Orchidaceae | ** |
Physosiphon moorei
| hort. | Kew Hand List Orch. Pl. ed. 1 189 | 1896 |
| Orchidaceae | |
Physosiphon nicaraguensis
| Liebm. | Index Seminum (Copenhagen) 20 | 1853 |
| Orchidaceae | ! |
Physosiphon obliquipetalus
| Ames & C. Schweinf. | Sched. Orch. 8: 12–14, t. 22 | 1925 |
| Orchidaceae | |
Physosiphon ochraceus
| A. Rich. & Galeotti | Ann. Sci. Nat., Bot., sér. 3, 3: 17 | 1845 |
| Orchidaceae | |
Physosiphon parahybunensis
| Cogn. | Fl. Bras. 3(4): 340 | 1895 |
| Orchidaceae | |
Physosiphon pubescens
| Barb. Rodr. | Gen. Sp. Orchid. 1: 27 | 1877 |
| Orchidaceae | |
Physosiphon punctulatus
| Rchb. f. | Bot. Zeitung (Berlin) 24(49): 385 | 1866 |
| Orchidaceae | |
Physosiphon serrulatus
| Barb. Rodr. | Gen. Sp. Orchid. 2: 78 | 1881 |
| Orchidaceae | |
Physosiphon spiralis
| Lindl. | Edwards's Bot. Reg. 21: sub t. 1797 | 1835 |
| Orchidaceae | |
Physosiphon tacanensis
| (Solano & Soto Arenas) Archila & Szlach. | Orchid Gen. Sp. Guatemala 643 | 2018 |
| Orchidaceae | ** |
Physosiphon tubatus
| Lodd. | | |
| Orchidaceae | |
Physosiphon tubatus
| (G. Lodd.) Rchb. f. | Ann. Bot. Syst. 6(2): 188 | 1861 |