INTRODUCTION TO CRYPTOGAMIC BOTANY. 



521 



of recent species in his Beitrage zu Flora der Vorwelt. He 

 has also figured very curious fruit in Senftenbergia elegans 

 Fig. 116), approaching in structure that of Aneimia, and 

 more imperfectly in Hawlea pulcherrima, allied to Mer- 

 tensia. There is also, in Linn., vol. xL, a figure of a Fern 

 in fruit, apparently allied to Mertensia, but the fructification 

 is very anomalous. A few other species have been found in 

 fruit, but none perhaps in so perfect a condition as Sen/ten^ 

 bergia of Corda.* 



Fig. 116. 



Senftenbergia elegans, Corda. 

 Sporangium after Corda. 



Fig. 117. 



a. Sor as of Angiopteris evecta. 



b. Ditto of Dancea EUiptica. 

 Botli slightly magnified; the 



former from Kew, the latter 

 from a St. Vincent's specimen in 

 Hook. Herb. 



589. In the following notes, I have for the most part 

 adopted the arrangement of Presl. as modified by Sir W. J- 

 Hooker, in his work on the Genera of Ferns. The characters 

 are in general abridged from Presl, with such alterations as 

 seemed desirable or were necessary for the prescribed limits of 

 this volume. I have also made great use of Mr. J. Smith's 

 excellent memoir on the Genera of Ferns in Hooker's Journal 

 of Botany, vol. 4, and Hooker's London Journal of Botany, 

 vols. 1 & 2. 



' For further information consult Brongniart's article in Orbigny's 

 Dictionary. 



