| Lappula arida | Hackelia arida I.M.Johnst. |
| Lappula coerulescens | Hackelia patens (Nutt.) I.M.Johnst. |
| Lappula cottonii | Hackelia cottonii (Piper) Brand |
| Lappula cusickii | Hackelia cusickii (Piper) Brand |
| Lappula micrantha | Hackelia micrantha (Eastw.) J.L.Gentry |
| Lappula nervosa | Hackelia nervosa (Kellogg) I.M.Johnst. |
| Lappula persica | Lepechiniella persica (Boiss.) Riedl |
| Lappula sharsmithii | Hackelia sharsmithii I.M.Johnst. |
| Lappula venusta | Hackelia venusta (Piper) H.St.John |