782 MINNESOTA BOTANICAL STUDIES. 



An unique species, entirely unlike any others in this multi- 

 typical genus, which should properly be divided into a number 

 of genera, as is the practice of almost all pteridologists outside 

 of Kew. If it does not form a section by itself, it will come 

 nearest in character to § Leptogramme, though very different 

 from any described form of that section. It is named from the 

 resemblance to Sadleria squarrosa in the cutting of the leaf. 



Hanging from a rock wall, on Kaholuamano above Waimea, 

 Kauai (2863). 



HYPOLEPIS Bernh. Schrader's Neues Journ. 1:34. 



1806. 

 Hypolepis tenuifolia (Porst.) Bernh. Schrader's Neues 

 Journ. 1:34. 1806. 

 Lonchites tenuifolia Forst. Prodr. n. 424. 1786. 

 This species is not uncommon in deep forests, at an elevation 

 of 4000 feet, above Waimea, Kauai. 

 August 31 (2778). 



NEPHROLEPIS Schott. Gen. Fil. pi. 3. 1834. 



Nephrolepis acuta (Schk.) Presl. Lent. Pterid. 79. 1836. 

 Aspidium acutum Schk. Fil. 32, pi. Si. 



Very common on trees and on the ground in the lower forest, 

 and extending up into the middle forest zone. Specimens were 

 collected in Nuuanu valley, Oahu, at an elevation of 1000 feet. 



March 23 (1987). 



Nephrolepis exaltata (L. ) Schott. Gen. Fil. 1834. 

 Polypodium exaltatum L. Sp. PI. Ed. 2, 1548. 1763. 



While N. acuta is confined to low and medium elevations, this 

 species replaces it at high elevations. On Kauai, where the 

 highest point is somewhat under 5000 feet, K exaltata is plen- 

 tiful at elevations of from 3000-4000 feet. 



October 11 (2873); original locality, "in America." 



PHEGOPTERIS Fee. Gen. Fil. 242. 1850-52. 

 Phegopteris hoiiolulensis (Hook.) Heller. 



Polypodium honolulense Hook. Sp. Fil. 4: 288. 1862. 



Polypodium hillebrandii Hook. Sp. Fil. 4:254. 1862, not P. hille- 



brandii Hook. 1. c. 228. 

 Phegopteris hillebrandii Hillebr. Fl. Haw. Is. 566. 1888. 

 At an elevation of 4000 feet, above Waimea, Kauai, this spe- 

 cies is rather common along streams, somewhat resembling 

 Aspleniurn aspidioides at a casual glance. 

 September 14 (2814). 



