340 



5. Lower pinnae forked ... ... ... 6. 



Lower pinnae once or more pinnate or 



pinnatifid ... ••• ••• •■• "• 



6. Sterile pinnae nearly 1 inch broad ... 7. 

 Sterile pinnae J inch broad, or less ... 8. 



7. Pinnae serrate, apex acute 3. cretica. 



Pinnae subcrenate, apex often obtuse... 4. plumbea. 



8. Sterile pinnae ^ to i inch broad ... 6. serrulata. 

 Sterile pinnae f to i inch broad ... 1. ensiformis. 



9. Lower pinnae simply pinnate ... ... 10. 



Lower pinnae tripinnate or bipinnatifid 11. 



10. Lower pinnae pinnate on lower edge only 9. semipinnata. 

 Lower and upper pinnae completely 



pinnate 13. decrescens. 



11. Lower pinnae tripinnate 10. aquilina. 



Lower pinnae bipinnatifid ... ... 12. 



12. Fertile and sterile fronds dissimilar ... 8. dimorpha. 

 Fertile and sterile fronds similar ... 13. 



13. Middle pinnae 2 to 3 inches long ... 12. Grevilleana. 

 Middle pinnae 5 inches long or more... 11. biaurita. 



1. P. longifolia, Linn. ; Hook et Bak. Syn. Fil. 153. Common 



on old walls, Hongkong ; near Chaochaufu, Swatow. 



2. P. insignis, Mett. ; Kuhn in Jour. Bot. 1868, 269. On the 



grassy slope of Victoria Peak, Hongkong ; Taimoshan at 

 2700 ft. among grass and scrub, Hongkong New Territory. 



3. P. cretica, Linn. ; Hook, et Bak. Syn. Fil. 154. Lienchow 



B-iver ; North River ; West River. 



4. P. plumbea, Christ in Lecomte, Not. Syst. 1909. 49. Swatow. 



5. P. deltodon, Bah in Journ. Bot. 1888, 226. Kwangtung 



without locality. 



6. P. serrulata, Linn.f. ; Hook, et Bak. 1. c. 155. Common on 



walls near Victoria, Hongkong. 



7. P. ensiformis, Burm. ; Hook, et Bak. 1. c. 155. Common on 



dry banks, Hongkong ; in similar places in Hongkong 

 New Territory. 



8. P. dimorpha, Copel. in Philipp. Journ. Sci. Bot. iii. 282. 



In a shady wood near Fanling, Hongkong New Terri- 

 tory ; Lienchow River. 



9. P. semipinnata, Linn. ; Hook, et Bak. 1. c. 157. Common in 



woods, Hongkong ; near Shingmun, Hongkong New 

 Territory ; Macao. 



10. P. aquilina, Linn. ; Hook, et Bak. 1. c. 162. Common from 



sea level to 1500 ft., Hongkong ; also in Hongkong New 

 Territory ; hills near Chaochaufu ; Lofoushan. 



11. P. biaurita, Linn. ; Hook, et Bak. 1. c. 164. Common in 



Hongkong ; Lamma Island, Hongkong New Territory ; 

 near Chaochaufu ; Macao. 



12. P. Grevilleana, Wall. ; Beddome Ferns Brit. Ind. 112. Hong- 



kong ; on the bank of the Han River, Swatow ; Lofoushan. 



13. P. decrescens, Christ in Bull. Acad. Geogr. Bot. 1906, 244. 



Lienchow River. 



14. P. incisa, Thunb. ; Hook, et Bak, 1. c. 172. Lienchow River; 



West River ; Lofoushan. 



