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65 words ending with um, 11 letters long

animalculum antependium antheridium antirrhinum archegonium aspergillum bryophyllum californium candelabrum carpogonium clostridium columbarium condominium corrigendum crematorium cypripedium definiendum desideratum einsteinium endocardium endometrium endothecium endothelium equilibrium florilegium gametangium hesperidium hormogonium incunabulum interregnum latifundium leprosarium magisterium mediastinum mendelevium mesothelium monochasium nonaluminum ostensorium pandemonium pelargonium penicillium pericardium pericranium perineurium perithecium phosphonium pittosporum planetarium podophyllum positronium proctodaeum prothallium quadrennium retinaculum scriptorium sempervivum sporogonium staminodium stylopodium succedaneum termitarium tetrazolium ultravacuum unnilhexium