Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
păpȳrĭfer, fĕra, fĕrum, adj. [papyrusfero], papyrus-bearing, that produces papyrus: papyrifer Nilus, Ov. M. 15, 753: amnis, id. Tr. 3, 10, 27.