A MONOGRAPH 



MORPHOLOGY AND HISTOLOGY 



STIGMARIA FICOIDES. 



WILLIAM CRAWFORD WILLIAMSON, LL.D., F.R.S., 



HONORARY MEMBER OF THE ROYAL ACADEMY OP GoTTINGEN, AND PROFESSOR OP BOTANY IN THE 

 OWENS COLLHGE AND THE VICTORIA UNIVERSITY, MANCHESTER. 



Pages i— iv, 1—62; Plates I— XV. 



LONDON: 

 PRINTED FOR THE PAL^ONTOGRAPHICAL SOCIETY. 



1887. 



