Cells urceolate, ventricose below, contracted towards the mouth.
"Narrative Of The Voyage Of H.M.S. Rattlesnake, Commanded By The Late Captain Owen Stanley, R.N., F.R.S. Etc. During The Years 1846-1850. Including Discoveries And Surveys In New Guinea, The Louisiade Archipelago, Etc. To Which Is Added The Account Of Mr. E.B. Kennedy's Expedition For The Exploration Of The Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist To The Expedition. In Two Volumes. Volume 1." by John MacGillivray
Urceolate: pitcher-shaped; swelling in the middle.
"Explanation of Terms Used in Entomology" by John. B. Smith
Corolla urceolate (in ours), 5-toothed.
"The Manual of the Botany of the Northern United States" by Asa Gray