FERNS OF THE MALAY- ASIATIC REGION. 
29 
1. Pinnules at least lobed, dimorphous. 
2. Veinlets simple - 8. G. dimorpha 
2. Veinlets forked. 
3. Fertile pinnules 11 deeply crenate 9. G. fructuosa 
3. Fertile pinnules 11 not deeply crenate 10. G. mindanaensis 
1. Pinnules at least lobed, not dimorphous, lobes not twice as long as broad. 
2. Indusium evident and persistent. 
3. Kachises clothed with copious hairy chafL 11. G . Philippine nsis 
3. Kachises glabrous or bearing minute scales. 
4. Racliis unarmed 12. G. polypoda 
4. Racliis bearing spines or prickles. 
5. Squamulae lacerate 13. G. integra 
5. Squamulae Initiate, not evidently lacerate 14. G. suluensis 
2. Indusium inconspicuous or wanting. 
3. Axes black or purple. 
4. Sori medial. 
5. Racliis of pinna glabrous 15. G. formosana 
5. Racliis of pinna pubescent above 16. G. glabra (A.dubia) 
4. Sori costular. 
5. Pinnules pinnate ... 17. G. atropurpurea 
5. Pinnules only lobed. 
6. Frond thin or subcoriaeeous, green. 
7. Sori costular 18. G.ramispina 
7. Sori medial 19. G.ridleyi 
6. Frond hard-coriaceous, brown when dry 20. G. recommutata 
3. Axes brown or stramineous. 
4. Segments separated by a rounded sinus. 
5. Wing narrow, veinlets simple 21. C. sang ire nsis 
5. Wing broad, veinlets mostly forked 22. G. obscura 
4. Segments crowded or close together. 
5. Frond hardly 50 cm long 23. G. hancockii 
5. Frond 1 m or more in length. 
6. Sori medial, 1 mm in diameter. 
7. Lamina glabrous 24. G. squamulata 
7. Lamina bearing white hairs beneath 25. G. margarethae 
6. Sori costular, 0.25 mm in diameter 26. C. boninsimensis 
1. Pinnules at least lobed, not dimorphous, lobes narrow. 
2. Racliis black or purplish-black. 
3. Indusium wanting, axes shining. 
4. Pinnules cut three-fourths to costa .' 27. G. henryi 
4. Pinnules cut to costa... 28. G. melanoracliis 
4. Pinnules I[ stalked 29. G. truncata 
3. Indusium evident, frond tripinnatifid 30. G. aneitensis 
3. Indusium evident, frond tripinnate, axes dull. 
4. Racliis unarmed 46. G. schizochlamys 
4. Racliis muricate. 
5. Pinnules lr 6 mm long, sori medial 31. G. arachnoidea 
5. Pinnules 11 12 mm long, sori costular 32. 0. tripinnata 
2. Racliis not nearly black. 
3. Racliis of frond or pinna bearing pubescence of two or more kinds mixed. 
4. Racliis nodulose, pustulose or verrucose. 
5. Pubescence all white or grey. 
