The mosses of Iowa are far from being adequately known. There are two large collections in which many packets are still unidentified. Outside of the State the Iowa mosses are very scantily represented even in the largest herbaria. It is proposed to distribute ten sets of the mosses and liverworts of the State, in order to place on record, and make available, the species and localities. Following is a list of one hundred Musci that are now ready for distribution. Although there are over 200 species of Musci in Iowa, it is doubtful whether another hundred will ever be distributed in sets. Many of them are known in very small quantity and from only one station. There is not enough in the State to make ten sets! For such species, specialists can doubtless get fragments from their resting places in the herbaria of the State University, Grinnell College, or Iowa Wesleyan College. It is urgently recommended that all additions to the moss flora of the State be placed on record by depositing a specimen in one of the active moss herbaria: at Grinnell College or at the State University
