The Present Position of Palaeozoic Botany. 



195 



Fig. 24. Restoration of the seed of Lygonodendron, from a 'model hy Mr. H. E. 

 Smedley. The seed in surrounded by the open cupule, studded Avith capitate 



e-lands. , . "i. 



Fig. 25. Capitate gland on the 



cupule of Lagenostoma Lomaxi. 



X 70. 



Fig. 26. Capitate gland on the 



petiole of Lyginodendron oldhami- 



am to compare with Fig. 25. 



X70. 



The seed itself is ortliotropous and generally of Cycadean organi- 

 zation; it shows complete radial symmetry. It possesses a single in- 

 tegument, adherent to the nucellus except in the apical region. |^The 



13* 



