IV.] LYCOPODIACEAi. 353 



In Sub-type 2 {Selagindld) the leaves are of two kinds, 

 the larger usually obliquely oblong or ovate, dis- 

 tichously arranged in the plane of ramification, the 

 smaller stipule-like, appressed, and intermediate. The 



F:g. 236. Selagitielia caulescens, reduced. , 



sporanges are of two kinds, containing either macrospores 

 or microspores. 



In Sub-type 3 {Psilotiun) the leaves are very minute, 

 distant, and scale- like, and the sporanges three-celled. 



The genus Isoetes, represented in India by two aquatic 

 species, very nearly related to a British one, differs remark- 

 ably in habit from Club-mosses, but agrees in having two 

 kinds of sporanges as in Sdaginella. The species are either 



A A 



