786 MINNESOTA BOTANICAL STUDIES. 



Polypodium sainoense Baker, Syn. Pil. Ed. 2, 321. 1874. 



This species was found only in wet woods, near the bog at 

 the head of the Wahiawa river, growing on moss-covered limbs. 

 In the Hawaiian group, it has been reported only from the 

 island of Kauai. 



August 12 (2708). 



Polypodium sarmentosum Brack. Bot. U. S. Expl. Exped. 

 16:8, pi 2,f. 3. 1854. 



Quite common on trees and bushes from an elevation of 2000 

 feet, to the summit of Konahuanui, Oahu. A Hawaiian fern, 

 common on all of the islands. 



May to October (2353) 



Polypodium serrulatum (Swartz) Mett. Ueber Einige Parn- 

 gatt 1. Polypodium, 32. 1857. 



Asplenium serrulatum Swartz, Fl. Ind. Occ. 1607. 1806. 

 Xiphopteris serrulatu Kaulf. Euum. Fil. 85. 1824. 



This handsome little species was collected at an elevation of 

 little more than 3000 feet, near the summit of Konahuanui, 

 Oahu. It was also seen in similar situations on Kauai. It grows 

 only on wet, moss-covered trees. 



November 2 (2905). 



Polypodium spectrum Kaulf. Enum. Fil. 94. 1824. 



This singular fern is common in the lower woods, where its 

 long vine-like rootstalks creep and twine over trees and rocks. 

 The form from Oahu (2118), has blunt lobes, while in specimens 

 from near the Hanapepe falls, Kauai (2438), there are five sharp- 

 pointed lobes. It is reported as growing also in Sumatra. 



Polypodium tamariscinum Kaulf. Enum. Fil. 117. 1824. 



Common on trees and on the ground, but found at its best on 

 the wet summit of Konahuanui (2214), At 4000 feet elevation, 

 above Waimea, Kauai, was found a fine form (2855), sometimes 

 referred to a distinct species (Adenophorus tripinnatifidus 

 Gaud.). 



PTERIS L. Sp. PI. 1073. 1753. 



Pteris aquilina L. Sp. PI. 1075. 1753. 



This species of world-wide diffusion, was common on grassy 

 slopes below the forest on Kauai. 



June 22 (2416). 



