Zf> CATALOGUE OF LOWER GREENSAN.D PLANTS. 



the larger rows numbering about ten (see text-fig. 6). Above 

 these, and terminating the floral axis, is the large rounded cone- 

 like structure composed of closely packed ovule- or seed-bearing 

 stalks and iriterseminal scales (text-fig. 6). As the fructifi- 

 cation matures, it is this central axis which enlarges and forms 



Text fig. 6. Benneffitrs ingrns (Ward). "Restoration of an expanded 

 bisporangiate strobilus in nearly longitudinal section. About | nat. 

 size. After Wieland. 



the " fruits " such as occur in the British species. The male 

 organs apparently disintegrate and make space for the enlarging 

 female organs (see text-fig. 7). 



For further details regarding the elaborate structures reference 

 should be made to Lignier (1894), Scott (1909), and Wieland 

 (1906, 1911, 1911 A, etc.). 



The plants which fruited seem to have been prolific, and, as 

 Wieland (1911, p. 134) has more recently shown, sometimes 

 bore an immense number of cones simultaneously. Wieland 

 has also suggested that the plants may have fruited but once at 

 the end of their life, as is the case in several living palms etc. 



