POLYPODIES POLYPODIUM. 117 



GONIOPHLEBIUM. 



1. Frond simple (26) P. nummularium 



1. Frond pinnate. 



2. Lamina glabrous. 



3. Margin entire (27) P. verrucosum 



3. Margin serrate (28) P. subauriculatum 



2. Lamina hairy (29) P. molliculum 



PHYMATODES. 



1. Fronds simple, not deeply lobed. 



2. Sori in a single row on each side of midrib. 



3. Fronds more or less dimorphous, small. 

 4. Main veins evident. 



5. Sori not restricted to upper half (30) P. neglectum 



5. Sori restricted to upper half (31) P. rhynchophyllum 



4. Veins obscure. 



5. Fertile frond broad (32) P. accedens 



5. Fertile frond linear (33) P. hammatisorum 



3. Fronds alike, minute : (34) P. Rudimentum 



3. Fronds alike, larger. 



4. Sori round (35) P. stenophyllum 



4. Sori oblong (36) P. longifolium 



2. Sori in several rows or scattered. 

 3. Venation fine or obscure. 



4. Frond narrowly linear (37) P. tenuilore 



4. Frond linear-oblanceolate (38) P. punctatuin 



4. Frond broadly oblanceolate (39) P. validum 



4. Frond ovate (40) P. oodes 



3. At least the main veins conspicuous. 



4. Main veins falling short of margin. 



5. Base attenuate (41) P. myriocarpum 



5. Base rounded (42) P. linguaeforme 



4. Main veins reaching margin. 



5. Sori in two rows between main 



veins (43) P. triquetrum 



5. Sori scattered. 



6. Frond narrowed below. 



7. Lamina membra- 

 nous (44) P. membranaceum 



7. Texture firmer. 



8. Sori numerous. 

 9. S o r i 



round.. (45) P. Zippelii 

 9. Sori ir- 

 regular (46) P. heterocarpum 

 8. Sori few, large (47) P. hemionitideum 



6. Base of frond broad (48) P. musaefolium 



1. Shallowly lobed or pinnatifid (49) P. anomalum 



1. Deeply pinnatifld. (Fertile simple entire fronds rare.) 

 2. Sori small and scattered. 



3. Textile coriaceous (50) P. pentaphyllum 



3. Texture thin. 



4. Stipe naked, winged almost to base (51) P. insigne 



4. Stipe usually chaffy, less winged (52) P. pteropus 



2. Sori large. 



3. Fronds dimorphous (53) P. incurvatum 



