ERRATA. 



Page 4, for Oycads read ZamUe. 

 8, for Hastiy read Hartig. 

 10, for Browne read Broome. 

 27, for paradoxan read paradoxum . 

 32, for Birch read Beech. 

 64, for sorices read scolices. 

 81, for alliances read division.^. 

 107, for Nityphyllum read Nitophyllum. 



140, iov propagation v&zd fructification. 



141, for microscopium read microscopintm. 



142, for alhumitwus read aluminoiis. 

 145, ior forming read /or??i. 



244, for vdutinus read velutipes. 



255, line 7, for immense read Zar-r/e. 



290, for oronata read coronata, 



316, for graminum read graminis. 



355, for Ncemetelia read Na^matelia . 



368, substitute ^ for P, in lines 2, 4, ami 1 



379, for nearly read oh/j/. 



398, for </(w read ^/tptr. 



420, line 14, strike out lampblack. 



461, for Goeppert read Berendt. 



ADDENDA. 



Page 77. Meneghini has figured annular vessels in Sargassum linifolium 

 See Alghe Italiane, &c., Tav. 1. 



Page 104. For directions for mounting microscopic specimens, see p. 420. 



Page 282. The terms applied hy Tulasne to the secondary or male fruit of 

 Sphceria and Lichens, require explanation to those who are not in possession of 

 his Memoirs When the fruit is conceived to be merely secondary, the peri- 

 tliecia are termed pycnidia, and their fruit stylospores ; where it is supposed to 

 be of sexual importance, the perithecia are styled spermatogonia, and their 

 deciduous granules spermatia. Stylospores and spermatia may, however, be 

 produced on threads not inclosed in perithecia. The term couidia is applied 

 to such secondary granules as are neither stylospores nor spermatia. 



Page 547. Hofmeister has lately given an account of the germination of the 

 spores of Bnfri/chium Lvnaria in Bonplandia. 



