14 



POPULAR GARDEN BOTANY. 



The name is derived from the Greek for a bunch, in al- 

 lusion to the form of the fructification. B. Lunaria is the 

 English species; 0. obliquum, dissection, Virginicum, fuma- 

 rioides, and gracile, are North American species, and tole- 

 rably hardy ; Australe, from Australia, requires the shelter 

 of the greenhouse always. These plants are not striking, 

 but are sometimes introduced into cultivation on account 

 of their curious forms, to mix with other Perns. 



FOLYPOBIAGEM. 



Acrogens, which are principally distinguished by the thecal * 

 having a ring or band of coarse meshes, which is too strong to 

 be broken through when the case opens to discharge its contents. 

 Most of the species have the spore-cases on the back of the leaf 

 (frond), except Hymenophyllece and Osmundece ; in the latter 

 they are on contracted leaves, resembling those of the last Order. 

 - — They are natives of almost every part of the world. The leaves 

 and roots of some genera are useful. 



WOODSIA. 



Gen. Char. (Orypiogamia Filices.) Sori dot-like, scattered; in- 

 dusium membranous, placed under the sori, and ciliated. 



Named after Mr. Woods, a British botanist. W, hyper- 



