exlviii. TABLE OP GENEEA. 



Hh. Ref. 



*** Valves of the indusium linear or sulrotund, mem- 

 branaceous, plane. 



134. Psesia,* St. mi. 1833 [p. xcvi.] 



**** Valves of the indusium coriaceous, the outer 

 larger cucullate, the inner operculiform. 



35. Cibotium, zifl. 1824 [p. xcvi.] 



Pinonia, &aud. MS.: Sory, I Hiatea, Menziet, MS. : Hook. 

 1824 : Gaud. 1826. | 1846. 



(b) Indusium cup-shaped, deflexed. 



136. Dennstsedtia, Semh. isoo. ... [p. xcvii.] 



Dicksonia, Klfs. 1824: Prel, \ Sitolobium, J. 8m. 1841. 



1836. Adectum, Link, 1841. 



Sitobolinm, Detv. 1827. 

 Patania, Presl, 1836. 



(c) Indusium cup-shaped, extrorse -marginal. 

 * Veins free. 



L37. Deparia, SooJc. et Grev. 1828. . [p. xcviii.] 

 * Veins reticulated. 



L38. Cionidium, Moore, 1852 [p. xcviii.] 



Trichiocarpa, Hooker, 1852 : I Patanema, J. Sm. ATS. (1854.) 

 J. Sm. 1856. 



23. 

 (a) Veins free. 



* Involucres stalked. 



139. Peranema, Don, 1825 [p. xcix.] 



Sphffiropteris, Wall.MS. 1828: I Podielema, X. Sr. MS. (1830.) 

 -B. Sr. 1830. | Nematopera, Kze. 1845. 



* Involucres sessile. 



t Involucre glolosesul'coriaceous,l>ursting irregularly. 



140. Diacalpe, si. 1828 [p. xcix.] 



ft " Involucre arachnoid, covering the sorus." 



141 (?) Arachniodes, m. 1828 [p. c.] 



* This eenus proves to have the same structure as Pteris aquilina, 

 with which it must be associated, and probably separated from Pteri*. 

 Its double indusia indicate some affinity with the Lindiaseas. We 

 leave it here, however, for the present, till its proper position is 



