598 RoBINSON: PTERIDOPHYTA OF THE HAWAIIAN ISLANDS 
DRYOPTERIS SANDWICENSIS (Hook. & Arn.) C. Chr. Ind. Fil. 290. 
ee 1905 
Polypodium sandwicense Hook. & Arn. Bot. Beech. 105. 1832. 
Phegopteris sandwicensis Mann, Proc. Am. Acad. 7: 218. 1867. 
TYPE LOCALITY: Hawaiian Islands. 
DISTRIBUTION: In forests, Hawaiian Islands, Viti Islands, and 
Pitcairn Island. 
SPECIMENS EXAMINED: Hawaii, Hillebrand B; Maui, Hillebrand 
B; Lanai, Hillebrand B; Molokai, Hillebrand B, C; Oahu, Hille- 
brand B, C; Kauai, Heller 2838 C; Hillebrand 66 B; Hawaiian 
Islands, Baldwin 79a B; Hillebrand B; Knudsen 158 B; 150 B; 
160 B; Lydgate B. 
DRYOPTERIS PROPINQUA (R. Br.) Gilb. Bull. Torrey Club 23: 454- 
1896 
Aspidium unitum Sw. Jour. Bot. Schrad. 18007: 32. 1801. Not 
Dryopteris unita (L.) Kuntze. 
Nephrodium propinquum R. Br. Prod. Fl. N. Holl. 148. 1810. 
Aspidium resiniferum Kaulf. Enum. 237. 1824. 
Aspidium propinquum Sw. Adnot. 67. 1829. 
Nephrodium resiniferum Hook. & Arn. Bot. Beech. 105. 1832- 
Aspidium Ecklonii Kunze, Linnaea 10: 546. 1836. 
Nephrodium Ecklonii Presl, Epim. 49. 1849. 
TYPE Locaity: Australia. 
DistRIBUTION: Very common in swamps in tropical countries. 
ILLUSTRATION: Schkuhr, Krypt. Gew. pl. 33). 1809. : 
SPECIMENS EXAMINED: Oahu, Beechey C; Robinsen 90 V; Maut, 
E. Bailey C; Kauai, Forbes 37 BM; Heller 2594 C; Robinson 405V; 
467 V; 474 V; Hawaiian Islands, Baldwin 66 B, C; Gulick B; 
Hillebrand B. 
Dryopteris propinqua has caused much confusion because cet 
tain transitory characters, such as the hairs on the surface of the 
leaf and at the margin of the indusium, have been considered as 
specific. ; ; 
This species is rarely in fruit though it grows abundantly 1n 
the roadside ditches from sea level to 1,500 m. elevation. 
DRYOPTERIS PARASITICA (L.)K untze, Rev. Gen. Pl. 2: 811. ie 
Polypodium parasiticum L. Sp. Pl. 1090. 1753. 
