— 4 — 
1877. Bryological Notes. 2: 109. 
1877. Notes on Erpodium biseriatum (?). 2: 142. 
1878. Notes on Hepaticology. 3: 6. 
1878. Bryological Notes. 3: 29. 
1878. Polytrichum tenue and P. brachyphyllum. 3; 70. 
1879. Some New Musci. 4: 150. 
1879. Some New Musci. 4: 161. New York Botanical Garden. 
DR. ROLL’S PROPOSALS FOR THE NOMENCLATURE OF 
SPHAGNUM. 
A LeRoy Andrews. 
A circular of twelve type-written pages distributed by the Secretary of 
the International Botanical Congress bears the title: “Antrage betr. Aender- 
ungen und Zusatze zu den inteniationalen Regeln von Wien in Bezug auf 
die Nomenclatur der Sphagna. Von Dr. Roll in Darmstadt.” The last 
two pages in French contain a brief resume of the essential points. The 
circular is in substance a request that Roll’s style of nomenclature be given, 
through the sanction of the International Botanical Congress meeting next 
summer at Brussels, the preference over the more current one of Warnstorf. 
The suggestions are formulated in proposed supplements or amendments to 
Articles 12, 37, 41, 43, 48 and 50 of the international botanical rules adopted 
at Vienna in 1905, these amendments to apply only to Sphagnum. They 
embrace the following points: 
1. The species of Sphagnum are in their nature series of forms, and, 
this being the case, it is impossible to set up a forma typica. Species thus 
based upon a single form or a herbarium-specimen are of little value, and in 
cases of doubt the name of the author who has given the diagnosis of a series 
of forms should be given the preference over that of one who described a 
species from a single form. ^ 
2. The description or diagnosis of a species, i. e. of a series of forms, 
should be short and contain only the characteristic diagnostic characters ; it 
should not repeat the characters of the genus, nor yet those of the varieties 
and forms. 
3. The extension or completion of a description or diagnosis already 
existant does not justify one in changing the name of the species concerned 
or that of its author. 
4. When within a genus a group is changed in rank or moved into 
