POLYPODIACE.E. 239 



6. MlCROLEPlA TRICHOSTICHA, J". Sm. 



Microlepia trichosticha, J. Sm. in Hook. Jour. Bot. 3, p. 416. 

 Davallia (Microlepia) trichosticha, Hook. Spec. Fil. 1, p. 183. 



Hab. Caldera, Mindanao, Philippine Islands. 



This differs from the preceding species in its smaller sori, placed at 

 a greater distance from the margin ; and in having the ultimate divi- 

 sions of the fronds not so deeply parted, bearing a close pubescence" 

 on their under surface, and slightly hairy above. 



7. Microlepia hirta, Presh 



Microlepia hirta, Presl, Tent. Pterid. p. 125. 



Davallia hirta, Kaulf. Enum. Fil. p. 223 ; Hook. & Am. Bot. Beech. Voy. p. 108 ; 



Hook. Spec. Fil. 1, p. 181. 

 Dicksonia Kaulfussiana, G-aud. Bot. Freyc. Voy. p. 368 ; Hook. Spec. Fil. 1, p. 71. 



Hab. Sandwich Islands ; where it is of very frequent occurrence, 

 on the islands of Hawaii and Oahu, in open places. 



A truly Davallioid plant : although the small lobe on which the 

 sorus is seated appears sometimes to connive with the (special) indu- 

 sium, yet this character is not constant; nor is the lobule then so 

 changed as to justify the referring of the plant to Diclcsonia. Sir 

 William Hooker, in his Species Filicum, after having placed it in 

 Dicksonia, removed it to his Microlepia section of Davallia. — The 

 species varies much in the greater or less hairiness of its stipe, rhachis, 

 costa, veins, and indusium. 



In the vicinity of Hilo, island of Hawaii, we detected a variety, 

 having large and lax fronds, which resembles some states of M. 

 polypodioides, and may probably be the variety of that species, 

 noticed by Sir William Hooker, in his Species Filicum, as a native 

 of the Sandwich Islands. 



