148 SPORAXGIOPHORES AND SPOROPHYLLS 



in regular whorls, instead of irregularly as in Tmesipft'ris. In other Spheno- 

 phylls the number of sporangia may be less, and the number of the more 



D 



Kic. 77. 



Tiucsiptcris fiiHiicnxis, Uernh. A , habit of a whole plant, pendulous form, showing 

 dichotomy. Natural si/e. />'-/,', sporopliyll and synangiuin ; Ji from the side, C from 

 above, D after dehiscence, E from below, all alioui ;. /' rhizome. '2 size. (" = trans- 

 verse section of .stem. X 4. (After Kngler and I'l.-mtl.) 



elongated stalks or sporangiophores, greater: thus in 6". Daivsoni they 

 are twice, in S. Romeri three times as numerous as the segments of the 



