( 564 ) 
Addendum to Dr Greville's Article, 483; 
The moss described under the name of Neckera Ameri- 
cana I have, since the article was printed, found to be pre- 
viously described. It is the Neckera minor of Schw^egr. 
Suppl. i. 2. p. 149, and the var. /S of N. viticulosa, Hedw. 
Sp. p. 210. The reader is therefore requested to substi- 
tute the specific name of minor for that of Americana; 
though it is unaccountable how I could pass this over when 
describing the moss, yet the fact may serve to confirm the 
species, which appears to be very distinct, notwithstanding 
its great affinity with N, viticulosa. 
