| Lappula arida cusickii (Piper) A.Nelson & J.F.Macbr. | Hackelia cusickii (Piper) Brand |
| Lappula cusickii Piper | Hackelia cusickii (Piper) Brand |
| Lappula diffusa (Lehm.) Greene | Hackelia diffusa (Lehm.) I.M.Johnst. |
| Lappula jessicae E.A.McGregor | Hackelia micrantha (Eastw.) J.L.Gentry |
| Lappula micrantha Eastw. | Hackelia micrantha (Eastw.) J.L.Gentry |
| Lappula minuta (Lipsky) Nabiev | Lepechiniella minuta (Lipsky) Popov |
| Lappula nana (L.) Caruel | Eritrichium nanum (L.) Schrad. ex Gaudin |
| Lappula nervosa (Kellogg) Greene | Hackelia nervosa (Kellogg) I.M.Johnst. |
| Lappula sarawschanica (Lipsky) Nabiev | Lepechiniella sarawschanica (Lipsky) Popov |
| Lappula saxatilis Piper | Hackelia diffusa (Lehm.) I.M.Johnst. |
| Lappula sharsmithii (I.M.Johnst.) Jeps. & V.L.Bailey | Hackelia sharsmithii I.M.Johnst. |
| Lappula subdecumbens A.Nelson | Hackelia diffusa (Lehm.) I.M.Johnst. |
| Lappula venusta Piper | Hackelia venusta (Piper) H.St.John |