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THE AMERICAN NATURALIST [Vol. XLI 



Raciborski, who has published a list of Javanese Pteridophytes 

 (Die Pteridophyten der Flora von Buitenzorg, I.eiden, 1898) gives 

 only one terrestrial species, O. moluccanum Schlecht.; but it is 

 evident from the writer's collections that there are at least four spe- 

 cies belonging to Euophioglossum in western 

 Java and possibly more. 



What seems to be the typical O. moluccanum 

 (fig. 1, A) is a species of moderate size. The 

 specimen shown has a sterile leaf somewhat 

 smaller than usual, but otherwise is typical. 

 One of the smaller forms of the same ( ?) spe- 

 cies is shown in fig. 1, B. In both of these 

 the sterile lamina is small, while the peduncle of 

 the spike is very long and not very much infe- 

 rior in thickness to petiole below the junction 

 of the spike and the sterile lamina. Most of 

 the other species of the section, e. g., O. vul- 

 gatum L., 0. mZi/ornzcww Prantl, 0. reticulatum 

 L., etc., agree in the main with 0. moluccanum, 

 and in none of these is there anything in the 

 external morphology of the adult sporophyll to 

 forbid the assumption that the sterile lamina 

 is a lateral appendage of the spike. 



The second section of the genus, Ophio- 

 derma, comprises (). prndii/inii L., (). hifcrme- 

 dium Hook, and probably also (). simplex 

 Ridley. In the latter species (fig. 2), which 

 was discovered by Ridley in Sumatra, the fer- 

 tile leaf consists of a narrow basal part without 

 any lann"na, terminated bv a s])ike similar to 

 that in ().pn,dHl,iu,,'Au.\h wa> assumed to be 

 the nearest relative of this specie.^. There is, 

 Fig. 2.-l'la,u oi however, no |,e.hniele .levelope.l as is the case 



arises from the lamina it>elf. i> continued into a >ort of thickened 

 mid-rib which is not developfMl above the in-ei'iion of the |.e(hnicle 



