196 RoBINSON: PTERIDOPHYTA OF THE HAWAIIAN ISLANDS 
Known only from the type locality. 
The present species differs from P. Knudsenii Hieron. in its 
smaller size; in the size of the scales, which in the latter are 3-4 _ 
Fic.1. Polypodium pumilum, natural size. 
mm. long and 0.5-0.8 mm. wide, with 10-20 rows of cells in 
broadest part; and in the smooth margin of the leaf in contra 
with the hairy margin of P. Knudsenii. 
POLYPODIUM PSEUDOGRAMMITIS Gaud. Voy. Freyc. Bot. 34, 
, | 1828 
Grammitis tenella Kaulf. Enum. 84. 1824. Not Forster. 
Polypodium Kaulfussii Presl, Tent. Pterid. 178. 1836. 
TYPE LOCALITY: Oahu. 
DISTRIBUTION: On trees, common; Hawaiian Islands. 
ItLustRaTIons: Hook. & Arn. Bot. Beech. pl. 21. 18 
Kunze, Anal. Pterid. pl. 9. {25 -4897. 
SPECIMENS EXAMINED: Hawaii, Hillebrand B, C; Robinson 
V; 260 V; 275 V; Oahu, Heller 2215 C; Macrae B; Robinson 2. 
9 V; 45 V; 119 V; Kauai, Robinson 446 V; Hawaiian Is 
Baldwin 32 B; 83 B, C; Gaudichaud B: Wilkes Expedition B, | 
