| Rubiaceae | |
Hedyotis acerosa subsp. acerosa
| | | |
| Rubiaceae | |
Hedyotis acerosa var. acerosa
| | | |
| Rubiaceae | |
Hedyotis acerosa var. bigelovii
| (Greenm.) W.H. Lewis | Ann. Missouri Bot. Gard. 55(3): 397 | 1968 [1969] |
| Rubiaceae | * |
Hedyotis acerosa var. polypremoides
| (A. Gray) W.H. Lewis | Ann. Missouri Bot. Gard. 55(1): 31 | 1968 |
| Rubiaceae | |
Hedyotis acerosa var. potosina
| B.L. Turner | Phytologia 79: 87 | 1996 |
| Rubiaceae | |
Hedyotis acerosa subsp. tamaulipana
| (B.L. Turner) Borhidi | Acta Bot. Hung. 46(1–2): 35 | 2004 |
| Rubiaceae | |
Hedyotis acerosa var. tamaulipana
| B.L. Turner | Phytologia 79: 87–88 | 1996 |