347 



12. Pinnae 4 to 8 on each side, 4 to 6 inches 



Ions'... 



, o ••• ■•• •■• 



Pinnae 12 or more on each side, 2 to 

 3 inches long 



13. Rhizome wide-creeping 

 Caudex erect or suberect 



14. Lower pinnae conspicuously reduced... 

 Lower pinnae slightly if at all reduced 



15. Lobes of pinnae triangular (deltoid) ... 

 Lobes of pinnae sub-falcate, triangular 



16. Pinnae 6 to 9 inches long 

 Pinnae 2 to 4 inches long 



17. Stalk slender; upper half or third of 



frond pinnatifid 



Stalk strong ; upper quarter of frond 

 only pinnatifid 



18. Fronds bipinnate or tripinnatifid 

 Fronds quadripinnatifid 



19. Fronds bipinnate at least at the base, 



not tripinnatifid 

 Fronds bipinnate at the base, tripin- 

 natifid 



20. Veins anastomosing copiously 

 Veins free 



21. Involucre red when young ; base of 



lower pinnae Ij inches broad 

 Involucre not red when young ; base of 

 lower pinnae If inches broad 



22. Stalk clothed with scales 

 Stalk naked 



23. Veins anastomosing 

 Veins free 



24. Eachis thickly scaly ... 

 Rachis naked or slightly scaly 



25. Fronds 4 to 6 feet long ; pinnae 1 to li 



feet long 



Fronds under 3 feet long ; pinnae 6 to 9 

 inches long ... 



26. Fronds including stalk 3 to 5 feet long 

 Fronds including stalk under 3 feet long 



27. Pinnules linear-lanceolate, apex acute 

 Pinnules lanceolate, apex more or less 



blunt 



28. Ultimate segments acute 

 Ultimate segments blunt 



1. N. decursivopinnatum, Bak. ; Hook, et Bak. Syn. Fil. 259. 



Kwaisin, Hoifung ; North River. 



2. N. decipiens, Hook. ; Hook, et Bak. 1. c. 260. Taimoshan at 



2500 ft., Hongkong New Territory ; top of Phoenix Mt., 

 Swatow. 



3. N. podophyllum, Hook. ; Hook, et Bak. 1. c. 260. Victoria 



Peak and Mt. Nicholson in shady ravines Hongkong ; 

 Lantao Island, Hongkong New Territory ; Swatow. 



