| Name | Thelomma A. Massalongo |
| Authorship | A. Massalongo |
| Rank | Genus |
| NomenclaturalStatus | NomLeg |
| Placed in | Caliciaceae |
| Contains | Thelomma californicum (Tuckerman) Tibell Thelomma carolinianum (Tuckerman) Tibell Thelomma mammosum (Hepp) A. Massalongo Thelomma occidentale (Herre) Tibell Thelomma ocellatum (Körber) Tibell Thelomma santessonii Tibell Thelomma sp. |
| Remarks | Type Species: Cyphelium mammosum Hepp |
| Citation | 1860 Atti Reale Ist. Veneto Sci. Lett. Arti sér. 3, 5: 268 |