ROBINSON: PTERIDOPHYTA OF THE HAWAIIAN IsLANDs 213 - 
DISTRIBUTION: Hawaiian Islands. 
SPECIMENS EXAMINED: Oahu, Hillebrand B, C; Safford 917 N; 
Hawaiian Is., Miss Sessions C. 
ASPLENIUM CONTIGUUM Kaulf. Enum. 172. 1824 
TYPE LocALITY: Oahu, Hawaiian Islands. 
DISTRIBUTION: Hawaiian Islands. 
SPECIMENS EXAMINED: Hawaii, Mann & Brigham 160 N ; Maui, 
Hillebrand B; Robinson 325 V; 382 V; 712 V; Wilkes Expedition N; 
Lichtenthaler N; Kauai, Knudsen 140 B; Oahu, Bartsch 29 N; 
Forbes BM; Heller 2115 C, N; Mann & Brigham 156 N; Safford 
902 N; 903 N; 911 N; Remy B; Wilkes Expedition N; Molokai, 
Hillebrand B; Hawaiian Is., Baldwin 4o B, C, N; 42 C; Lindley C. 
ASPLENIUM CAUDATUM Forst. Prod. 80. 1786 
Asplenium spathulinum Hilleb. Fl. Haw. Is. 604. 1888. 
TYPE Locality: Hawaiian Islands. 
DISTRIBUTION: Tropical countries. 
ILLUSTRATION: Brack. Fil. U. S. Expl. Exp. pl. 22. 1854. 
SPECIMENS EXAMINED: Maui, Hillebrand 13 B; Robinson 632 - 
V; Kauai, Forbes 636 BM; Knudsen 130 B; 137 B; 141 B; 142 B; 
148 B; 149 B; Hawaiian Is., Baldwin B; Gaudichaud B. . 
Hillebrand, Fl. Haw. Is. 604. 1888, separates Knudsen 141 
and 148 as A. spathulinum on the basis that the pinnae in these 
specimens are more deeply incised than in the others. Robinson 
632 V shows both deéply cut and simply serrate leaves on the 
same plant. 
Many of the segments are somewhat diplazioid, because sori 
arise on both sides of the initial vein and each extends along one 
of the forks. 
ASPLENIUM NITIDULUM Hilleb. Fl. Haw. Is. 601. 1888 
Type LocaLity: Kauapali, W. Maui, Hawaiian Islands. 
DistrispuTION: Hawaiian Islands. 
SPECIMENS EXAMINED: Maui, Hillebrand B (type); Bailey C; 
Lichtenthaler N; Oahu, Heller 2055 C; Hawaiian Is., Baldwin N. 
This is separated from A. contiguum on its firmer character 
and the acuminate apices of its pinnae in contrast to the lax and 
often recurving pinnae of the latter. 
