POLYPODIACEiE. 13 



Hab. Sandwich Islands : on trees, frequent. 



Kaulfuss, in establishing this species, apparently had before him 

 one of its extreme states; for he describes the fronds as "ovate- 

 oblong, with a caudate and simply pinnatifid apex." But it very gra- 

 dually passes from this state to its more usual form, which is lanceo- 

 late, and a little attenuate at both ends, of which the figure of Adeno- 

 phonis bipimiatus of Gaudichaud in Freycinet's Voyage, is a good 

 illustration. 



19. POLTPODIUM HYMENOPHYLLOIDES, Kaulf. 



Polypodium hymenophylloides, Kaulf., Enum. Fil. p. 118. 

 Adenophorus minutus, G-aud. Bot. Freyc. Voy. p. 364, t. 8, f. 3. 

 A. hymenophylloides, Hook. & Grey. Ic. Fil. t. 176; Hook. & Am. Bot. Beech. 

 Voy. p. 105. 



Hab. Sandwich Islands : on trees. 



The figure of this species in Hooker and Greville's Icones Filicum, 

 represents the more robust state of the plant, as well as the broadest 

 form that the frond assumes, it being usually linear, and in many of 

 our specimens, as much as 5 inches in length. It is very frequently 

 pendent in habit. 



20. Polypodium tripinnatifidum. 



Adenophorus tripinnatifidus, G-aud. Bot. Freyc. Voy. p. 365, t. 8, f. 1. 



Hab. Sandwich Islands : on trees. 



The rootstock of this is more slender, and creeps to a greater dis- 

 tance, with both stipes and fronds longer, and the lacinise narrower 

 and more acute than in P. tamariscinum. 



* * Phegopteris, Presl, J. Sm. 



21. Polypodium vestitum, Raddi. 



Polypodium vestitum, Raddi, Plant. Brasil. p. 24, t. 36. 



Hab. Organ Mountains, Brazil. 



