4 literature references for Cyathophorum spinosum Fleischer, 1902:

Author: Akiyama, H.
Year: 1992
Title: Taxonomic studies of mosses of Seram and Ambon (Moluccas, East Malesia) collected by Indonesia-Japanese Botanical Expeditions, V. Hypopterygiaceae
Source: Acta Phytotax. Geobot.
Author: Crosby, M. R. and others - REVISED
Year: 1999
Title: REVISED: accepted in a monograph, revision, or descriptive flora since 1963
Source: Checklist Mosses
Author: Kruijer, H.
Year: 2002
Title: Hypopterygiaceae of the World
Source: Blumea, Suppl.
Author: Fleischer
Year: 1902
Title:
Source: Musci Frond. Archip. Ind. Exsic.