Vol. 39 No. 12 
BULLETIN 
TORREY BOTANICAL CLUB 
_ DECEMBER - 1912 
A taxonomic study of the Pteridophyta of the Hawaiian Islands—II 
WINIFRED J. ROBINSON 
(WITH PLATES 40-44) 
5. POLYPODIACEAE 
Plants various in habit. Rootstock erect or creeping; leaves 
circinate in vernation, blades simple to quadripinnate; sporangia 
covering the lower surface in a uniform layer or arranged in linear, 
roundish, or oval sori; these indusiate or non-indusiate; sporangia 
stalked; annulus incomplete. 
Sporangia scattered over the under surface of the leaf 
_ blade in a uniform layer. 1. Elaphoglossum. 
Sporangia in definite sori. 
Sori marginal or submarginal. 
Indusium present. 
Sori continuous or interrupted, indusium 
formed of the more or less modified 
leaf margin. 
Indusium opening inward. 
Sporangia arising from a contin- 
uous veinlike receptacle, 
connecting the ends of the 
veins, 
_Indusium single. 2. Pieris. 
Indusium double. 3. Pleridium. 
con 
flexed in fertile leaflets 
Veins free. : 4. Pellaea. 
Veins anastomosing. 5. Doryopteris. 
ie 
(The Buttetiy for November 1912 (39: 519-566. pl. 37-30) was issued 18 N ror. 
oe 567 ; 
