224 RoBINSON: PTERIDOPHYTA OF THE HAWAIIAN ISLANDS 
Athyrium Arnottii Milde, Bot. Zeit. 28: 371. 1870. 
TYPE LOCALITY: Hawaiian Islands. 
DISTRIBUTION: Lower forests, Hawaiian Islands. 
SPECIMENS EXAMINED: Maui, Bailey C; Molokai, Hillebrand 
B; Oahu, Beechey C; Beratz B; Forbes BM; Heller 2900 C; Hille- 
brand B; Kauai, Johnson B; Hawaiian Is., Baldwin 55 C; 56 B, C; 
57 C; Mrs. Gulick C; ex Herb. Kewensis C. 
Though the rootstock is prostrate, this fern has almost the 
appearance of an arborescent form, the leaves reaching a height 
of from five to six feet. 
The Hawaiians prize the tips of the young fronds as a salad. 
DIPLAZIUM SANDWICHIANUM (Presl) Diels, in E. & P. Nat. 
Pflanzenfam. 14: 228. 1899 
Athyrium sandwichianum Presl, Tent. Pterid. 98. 1836. 
Asplenium sandwichianum Hook. Sp. Fil. 3: 225. 1860. 
Asplenium brevisorum Baker, in Hook. & Baker, Syn. Fil. Ed. 2. 
228. 1874 
TYPE LOCALITY: Oahu, Hawaiian Islands. 
DISTRIBUTION: Hawaiian Islands, Peru. 
SPECIMENS EXAMINED: Hawaii, Beratz B; Robinson 620 V; 
Maui, Hillebrand B; Robinson 386 V; Molokai, Hillebrand B; 
Oahu, Diell C; Forbes BM; Heller 2073 C; Macrae C; Meyen B 
(cotype); Robinson 148 V; 156 V; 160 V; Hawaiian Is., Baldwin 
B; ex Herb. Mt. Holyoke College C; Wilkes Expedition C. 
SPECIES INQUIRENDA 
DIPLAZIUM SANDWICHENSE Presl, Epim. 85. 1850-52 
From Presl’s description this seems to be a form very closely 
related to Diplazium molokaiense, differing from it in the deeper 
cutting of the lobes and the greater length of the auricle. 
Meyen’s type is doubtless still in Presl’s Herbarium in the 
Bohemian University at Prague. There seems to have been n0 
further collection of the plant. 
29. SADLERIA Kaulf. Enum. 162. 1824 
Sadleria, an endemic Hawaiian genus, is frequently found as 4 
pioneer on disintegrating lava rock. It differs conspicuously 1 — 
