780 MINNESOTA BOTANICAL STUDIES. 



Dryopteris latifroiis (Brack.) Kuntze, Rev. Gen. PL 813. 1891. 

 Lastrea latifroiis Brack. Bot. U. S. Expl. Exped. 16: 196. 1854. 



At the base of a large rock, on the edge of the plateau above 

 Manoa, Oahu, at an elevation of about 2000 feet. An endemic 

 Hawaiian fern, recorded as occuring on all the islands, but not 

 common. 



October 30 (2899); probably from the type locality, "Oahu, 

 Sandwich Islands; on the high mountains behind Honolulu." 



Dryopteris parasitica (L ) Kuntze, Rev. Gen. PL 811. 1891. 



Polypodium parasilicum L. Sp. PI. 1090. 1753. 

 Nephrodium molle Desv. Mem. Soc. Linn. 6: 258. 



Common on Oahu, in open places, valleys, and slopes, barely 

 reaching to the lower limit of the lower forest. 

 March 26 (2011). 



Dryopteris iiuda Underw. n. sp. 



Rootstock short; petioles caespitose, 20 to 25 cm. long, naked 

 throughout, brownish below, lighter above, extending into a 

 stramineous rachis; leaves triangular-ovate, 25 to 30 cm. long, 

 tripinnatifid; lowest pinnae much the largest, 13 cm. long by 

 about 10 cm. or more wide at the base, unequally triangular, 

 the lower pinnule much larger and more divided; upper pinnae 

 varying from broad triangular to lanceolate, always widest at 

 base, the uppermost simple; ultimate segments with short, 

 somewhat distant, sharp serrations; veins pinnate, the branch- 

 es obscurely forked; sori small, marginal, one at the lower 

 side of each tooth or segment; indusia withering persistent. 



Resembling somewhat small forms of our common D. spinu- 

 losa, but a much more rigid plant with less pronounced serra- 

 tions and different habit. The rachises throughout have occa- 

 sional narrow scale-like hairs of a reddish color. 



This plant was common on Kauai in rather dry woods. It 

 was first collected at an elevation of 2000 feet, on the ridges 

 between the Hanapepe and Wahiawa rivers, later on the ridge 

 west of the Hanapepe, at 2000 feet, and also at 4000 feet above 

 Waimea. 



August to October (2750). 



Dryopteris squamigera (H. & A.) Kuntze, Rev. Gen. PL 813. 

 1891. 

 Nephrodium squamigerum H. & A. Bot. Beechey, 106. 1833. 



On the face of a perpendicular rock in a gulch above Waimea, 

 Kauai, at an elevation of 2000 feet, this species was plentiful, 



