Tab. VI & VII. 



Platyceriiim Willielmina* Ite&iiue. v. i.v.H.. 



taken from the specimen cultivated in the Buitenzorg gardens. 



a. Natural aspect of a part of the plant, 1 / 10 X- 



b. Plan of the fronds, Y25 X- 



e. Lower part of fertile fronds showing the sori, 1 j 15 X- 



d. Ultimate segments of fertile fronds, 1 / 6 X- 



