| Podostemaceae | |
Marathrum aeruginosum
| P. Royen | Meded. Bot. Mus. Herb. Rijks Univ. Utrecht 107: 84–85, 132, pl. 8, f. 1–2 | 1951 |
| Podostemaceae | |
Marathrum allenii
| Woodson | Ann. Missouri Bot. Gard. 25(4): 827 | 1938 |
| Podostemaceae | |
Marathrum azarensis
| Tur | Hickenia 3(38): 153–156, 151–152, f. 1–3 | 2003 |
| Podostemaceae | |
Marathrum capillaceum
| (Pulle) P. Royen | Meded. Bot. Mus. Herb. Rijks Univ. Utrecht 107: 86 | 1951 |
| Podostemaceae | |
Marathrum cheiriferum
| P. Royen | Ann. Missouri Bot. Gard. 37(2): 134–135, f. 60 | 1950 |
| Podostemaceae | |
Marathrum cubanum
| C. Wright | Anales Acad. Ci. Méd. Fís. Nat. Habana 7: 561 | 1871 |
| Podostemaceae | |
Marathrum elegans
| P. Royen | Meded. Bot. Mus. Herb. Rijks Univ. Utrecht 107: 77, 131, pl. 16, f. 4–5 | 1951 |
| Podostemaceae | |
Marathrum flexuosum
| Liebm. | Förh. Skand. Naturf. Mötet 5: 511 | 1849 |
| Podostemaceae | ! |
Marathrum foeniculaceum
| Bonpl. | Pl. Aequinoct. 1: 40–41, t. 11 | 1808 [1806] |
| Podostemaceae | * |
Marathrum foeniculaceum
| Seem. | Bot. Voy. Herald 197 | 1854 |
| Podostemaceae | |
Marathrum haenkeanum
| Engl. | Bot. Jahrb. Syst. 61(Beibl. 138): 4 | 1927 |
| Podostemaceae | |
Marathrum indifferens
| P. Royen | Ann. Missouri Bot. Gard. 37(2): 132–133, f. 59 | 1950 |
| Podostemaceae | |
Marathrum jenmanii
| Engl. | | 1927 |
| Podostemaceae | |
Marathrum kerberi
| Engl. | Bot. Jahrb. Syst. 61(Beibl. 138): 5 | 1927 |
| Podostemaceae | |
Marathrum lacunosum
| Gardner | Calcutta J. Nat. Hist. 7(26): 169 | 1847 |
| Podostemaceae | |
Marathrum leptophyllum
| P. Royen | Ann. Missouri Bot. Gard. 37(2): 131–132, f. 58 | 1950 |
| Podostemaceae | |
Marathrum minutiflorum
| Engl. | Bot. Jahrb. Syst. 61(Beibl. 138): 4–5 | 1927 |
| Podostemaceae | |
Marathrum modestum
| (Wedd.) Nash | N. Amer. Fl. 22(1): 4–5 | 1905 |
| Podostemaceae | |
Marathrum nervosum
| Engl. | Bot. Jahrb. Syst. 61(Beibl. 5): 5 | 1927 |
| Podostemaceae | |
Marathrum oxycarpum
| Tul. | Ann. Sci. Nat., Bot., sér. 3, 11: 94–95 | 1849 |
| Podostemaceae | |
Marathrum pauciflorum
| Tul. | Ann. Sci. Nat., Bot., sér. 3, 11: 94 | 1849 |
| Podostemaceae | |
Marathrum plumosum
| (Novelo & C.T. Philbrick) C.T. Philbrick & C.P. Bove | Syst. Bot. 36(1): 114 | 2011 |
| Podostemaceae | |
Marathrum pusillum
| P. Royen | Ann. Missouri Bot. Gard. 37(2): 129–130, f. 57 | 1950 |
| Podostemaceae | |
Marathrum ricciiforme
| Liebm. | Förh. Skand. Naturf. Mötet 5: 512 | 1849 |
| Podostemaceae | |
Marathrum rubrum
| Novelo & C.T. Philbrick | Novon 3(4): 456–458, f. 1 | 1993 |
| Podostemaceae | ** |
Marathrum schiedeanum
| (Cham.) Tul. | Ann. Sci. Nat., Bot., sér. 3, 11: 95 | 1849 |
| Podostemaceae | ! |
Marathrum schiedeanum
| Cham. | Linnaea 9: 504 | 1834 [1835] |
| Podostemaceae | |
Marathrum squamosum
| Wedd. | Prodr. 17: 54 | 1873 |
| Podostemaceae | |
Marathrum stenocarpum
| (Wedd.) P. Royen | Ann. Missouri Bot. Gard. 37(2): 127–129 | 1950 |
| Podostemaceae | |
Marathrum striatifolium
| P. Royen | Meded. Bot. Mus. Herb. Rijks Univ. Utrecht 107: 87–88, 132–133, pl. 7, f. 29–34 | 1951 |
| Podostemaceae | |
Marathrum tenue
| Liebm. | Förh. Skand. Naturf. Mötet 5: 511–512 | 1849 |
| Podostemaceae | |
Marathrum trichophorum
| P. Royen | Meded. Bot. Mus. Herb. Rijks Univ. Utrecht 107: 87, 132, pl. 16, f. 6–9 | 1951 |
| Podostemaceae | |
Marathrum utile
| Tul. | Ann. Sci. Nat., Bot., sér. 3, 11: 95 | 1849 |