CLV 
allow different decisions from time to time, as species-numbers and genera- 
limitations change in the works of the authors from time to time. "That would 
be only a source for quarrel. Tea and Camellia are names of the same day, 
Thea in Cl. XIII of 1735 and under Nr. 434 of 1737; Camellia Cl. XVI of 
1735 and Nr. 565 of 1737. In 1753 each of them got only 1 species. Hoffmanns- 
egg unitéd them correctly under Thea (cfr. Thea Camellia Hffg.); Seemann found 
the group of Camellia richer and put Thea to Camellia; every monographer 
else would get another decision; Thiselton Dyer (Hooker filius, flora of British 
India) preferred Camellia; Pierre (fl. Cochinchine) Thea again. Thea: Ca- 
mellia is one of the simplest cases, but it shows, how later objections trouble 
the clear decision out of first publication; most other cases are complicate and 
by confounding later alteration with decisions about priority we get complications 
without end. Only on the first establishment of genera and species it is possible 
to find a correct decision of priority. 
My third proposed exception finds only a rare application, but sometimes 
f. i as to Dendrobiuwm Sw. to rich genera; for Dendrobium are existing two 
older names of the same day: Ceraia and Callisia Lour. Now Ceraia is a 
name, which is not identical with Cereus, but which ought to be changed in 
4 necessary and allowed manner in consequence of $ 66. To $ 66 I recom- 
mend the regulations of orthographical differences, as it is of importance to 
know the end of orthographical license and the beginning value of a new word. 
l ean only refer to the part written in German of my other proposed additions 
to the international laws of nomenclature, as I intended only to give here my 
opinion in English towards cases of nomenclature, which troubled English bo- 
tanists much in recent years. 
If we are in doubt as to any rule we must follow the strictest priority, 
even if we must change more names. 'The inconvenience of changing many 
names troubles less, and the changed names soon come in general use, if the 
changes are made at once in one book, as we have learned it even with the 
instalment of the most illegal genera-names and species-names, But any one, who 
should bring now a standard book with illegal names, would be blamed for 
all time.  Unambiguous rules and priority are the only sound principles by 
whieh we can bring order in nomenclature; the changes necessary by priority 
should, as J. Britten in his Journal of Botany 1888 p. 6 writes, be made as 
promptly and as thoroughly as possible, and — as we may wish it — if possible 
at once in one book. 
