430 



DISTRIBUTION OF PLANTS. 



(No. 17); seeming distinct from T. flabellatum, less flabelkte. "Waialua, at the 



Western end of Oahu," Rich and Brackenridge. 



Hymenophyllum (No. 7 ) ; hairy. In woods at upper base of Mauna Roa, C. P. 



(No. 8) ; a slender rhizoma ; fronds smooth, eight to ten inches high, with lax 



segments. District of " Puna," Brackenridge ; growing also on the mountains behind 

 Honolulu, winged and smooth. 



(No. 9). Not creeping ; the tufts eight or ten inches high, pubescent, thick, 



rigid ; segments very narrow, and habit of Trichomanes. " Pahuhali near the new lava- 

 stream, growing on the ground," Brackenridge. 



(No. 10); seeming more hairy than Hawaiian sp. (No. 7j. "On the mountains 



behind Honolulu," Brackenridge. 



(No. 11) ; differing from hairy Hawaiian sp. (No. 7) in frond inclining to become 



flabellate. " Waialua, at the Western end of Oahu," Rich and Brackenridge. 



Dicksonia (No. 13) ; a congener of N. American sp. Two feet high; frond tripinn., very 

 pubescent, and long hairs. In the Upper portion of the forest on Mauna Kea, and 

 extending beyond the margin ; or from the elevation of GOOO feet to that of 7000. 



(No. 14). Large, tripinn., pubescent; shining hairs on the fronds. Hilo. 



Nov. gen. Polypodioid, (No. 1). Frond bipinnatisect, of uniform width throughout and 

 very long, ascending trunks and among branches to the height of sixteen or eighteen 

 feet by means of reflexed segments; remarkable also among Ferns, according to Mr. 

 Brackenridge, for " fruiting while the summit of the frond continues growing, so that 

 sori occur in all stages of development upon a single frond;" the pinn. are serrate, and 

 attached at base. Puna, and elsewhere ; frequent. 



Gen. Davallioid, (No. 1). Not creeping; frond tripinn., pubescent beneath; the seg- 

 ments serrate; fr. in one-sided cup in axils of segments. "Woods in the District of 

 Puna," Brackenridge. 



(No. 2). Adiantum-like, and much divided. Frequent on Oahu; and in open 



ground in the environs of the Great Crater; growing often deep in the steam-vents. 



Acrostichum (No. 7) ; frond thin, broad-lanceolate, thickly penninerved, and the nervures 

 dichotomous. "On trees in the District of Puna," Brackenridge. 



(No. 8). Eight to twelve inches; stipe long; frond lanceolate, obtuse. "Fre- 

 quent on trunks of trees in the District of Puna," Brackenridge. 



(No. 9). Frond two feet high, lanceolate, penninerved, the nervures numerous, 



and usually forked. Tauai and Puna; growing on the ground in the forest. 



(No. 10). A rhizoma; fronds lanceolate, smooth, the fertile one with a long 



stipe. Epidendric on trunks of trees, at the upper margin of the forest on Mauna 

 Kea, at the elevation of 6700 feet. 



nov. sp., (No. 11). Frond lanceolate, two feet high, the under surface covered 



with broad pale^. Tauai. 



Schizea nov. sp., (No. 5). Simple, six inches high, growing in tufts. On the moun- 

 tains behind Honolulu, at the elevation of 2500 feet. 



Adiantum (No. 9); like A. capillus-veneris. Small, six to eight inches high; the seg- 

 ments large. Cliffs of the coast at the Northern base of Mauna Kea; also, on Oahu. 



Lindssea? (No. 4) ; simply pinnate, the segments recurved. In the forest on Mauna Kea, 

 at the elevation of about 4500 feet. 



nov. sp., (No. 5). A remarkable fern, Nephrodium-like. In the "mountain- 

 defile across West Maui," Brackenridge ; rare. 



