AFRO-INDIAN REGIONS. 



431 



? (No. 6) ; a congener of the last, but having the habit of Asplenium trichomanes. 



" On the mountains West of the gap behind Honolulu, growing on the face of crags, and 



once only met with," Brackenridge. 

 (No. 7); apparently normal. Frond pinnate; .the segments recurved, obtuse. 



"On the mountains West of the gap behind Honolulu," Brackenridge. — Perhaps 



the pinnate species, having a rhizoma and epidendric on the trunks and branches of 



trees. 



Marattia (No. 1). Three to five feet high; frond tenderly herbaceous, bipinnate, the seg- 

 ments sub-petioled and serrate. Hawaii, and elsewhere ; frequent in the forest. The 

 root farinaceous and esculent ; the young fronds also used for food by the natives. 



Blechnum Fontanesianum, (No. 3). A small low tree-fern. Abundant throughout the 

 G-roup ; on the North flank of Mauna Haleakala, extending to the elevation of 6700 

 feet. 



■ (No. 4) ; a congener of the last. Low, and spreading. Growing on a bank in 



the forest on Mauna Kea, at the elevation of about 4500 feet. 



Gleichenia; compare (No. 1) Taheiti (to the Feejee Islands). Frequent at the com- 

 mencement of the forest, and more or less sub-scandent, among the lower branches of 

 the trees; the midrib of the frond smooth. Northern base of Mauna Kea; also, in the 

 environs of the Great Crater, and elsewhere. 



(No. 3) ; racliis paleaceous throughout. Growing in the portion of the forest on 



Mauna Kea above the elevation of 3000 feet. 



(No. 4) ; a fine species. Smooth; frond bipinnate, the segments entire. On the 



mountains behind Honolulu, at the elevation of from 1500 to 2000 feet. 



(Cheilanthoid ?, No. 3); like a narrow multifid Asplenium, but fr. marginal, along the 

 superior incurved margin. On the barren Leeward slope of the Tauai table-land. 



Ophioglossum pendulum; compare (No. 1) Taheiti to the Feejee Islands. Epidendric. 

 Frequent throughout the Group; the fronds used for food by the natives. 



Adenophorus (No. 1). Frond large, eight to twelve inches high, bipinn. and lobed; gold- 

 colored dots becoming visible under the microscope. "Pahuhali," near the new lava- 

 stream, Brackenridge. 



(No. 2); the smallest species. "Between the Great Crater and Puna," Bracken- 

 ridge ; and the same, the frond not more than a fourth of an inch wide, found "on 

 Hawaii" by Mr. Rich. 



(No. 3); perhaps distinct; the frond broad, and much divided, the segments 



more capillary. Tauai. 

 Polypodium (No. 12). Small, three to four inches high ; frond stipitate, lanceolate, hairy ; 



fructification in two rows. "Between the Great Crater and Puna, growing on trunks 



of trees," Brackenridge. — Apparently the same species, with narrower longer leaves 



and fewer hairs, on the mountains behind Honolulu. 

 nov. sp., (No. 13) ; linear, Vittaria-like or grass-like fronds. " Frequent on 



trunks of trees, between the Great Crater and I'una," Brackenridge. 

 (No. 14); like the last, but serrate, and sometimes forked ; fr. small, and where 



begins the denticles disappear. "Between the Great Crater and Puna," Brackenridge. 

 (No. 15); diS"erent from serrat. Frond small, linear, pinnatilobed ; fr on each 



lobe. On the mountains behind Honolulu. 

 (No. 16) ; much like P. vulgare, but wider fronds and a rhizoma; pinnis crenate. 



On trunks of trees in the environs of the Great Crater. 



