340 
5. Lower pinnae forked .. 6. 
Lower pinnae once or more pinnate o or 
pinnatifid .. as 9. 
6. Sterile pinnae nearly 1 inch broad... T 
Sterile pinnae 1 inch broad, or less ... 8. 
7. Pinnae serrate, apex acute 3. cretica, 
Pinnae subcrenate, apex often obtuse... 4. plumbea, 
8. Sterile pinnae } to } inch broa .. 6. serrulata. 
Sterile pinnae # to 3 inch broad 7. ensiformis. 
9. Lower pinnae simply pin 10. 
iL 
10. Lower pinnae pinnate on lower RE oly 9. semipinnata. 
pinnate - 18. decrescens. 
ll. Lower pinnae tripinnate rE -. 10. aquilina, 
Lower pinnae bipinnatifid 12. 
12. Fertile and sterile fronds dissimilar ... 8. dimorpha. 
Fertile and sterile fronds similar — ... 
13. Middle pinnae 2 to 3 inches long — ... 12. Gee bana, 
Middle pinnae 5 inches long or more... 11. biawrita. 
l. P. longifolia, Linn.; Hook et Bak. Syn. Fil 153. Common 
ld 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 a se Hongkong New Territory. 
3. P. eretica, Linn.; Hook. qms Fil 154. Lienchow 
River; N orth River ; trent i 
4. P. plum umbea, Christ in Lecomte, Not. are 1909. 49. Swatow. 
5. P. deltodon, Bak. in Journ. Bot. 1888, 226. Kwangtung 
without locality. 
6. P. serrulata, Linn. f.; Hook. et Bak. l. c. 155. Common on 
walls near Victoria, megan ng. 
7. P. ensiformis, Burm. Hook. et Bak. 1. c. 155., Common on 
banks, Henan: in similar I: in Hongkong 
New Territory. 
8. P. dimorpha, y od Philipp. Journ. Sci. Bot. iii. 282. 
EE oiii aanak Linn. ; Hook: et Bak. l. c. 157. Common in 
woods, Hongkong ; ; near Shingmun, Hongkong New 
Territory ; Maca 
10. P. aquilina, Teu ph. Hook et Bak. 1. e. 162. Common from 
sea level to ft., Hongkong ; also in Hongkong New 
Territory ; bills n near ' Chaochautu ; ec 
ll. P. biaurita, Linn.; Hook. et Bak. L c. 164. Common in 
Hongkong ; ; Lamma Island, Hongkong New Territory ; 
near Chaochaufu ; Macao. 
12. P. Grevilleana, Wail. ; ' Beddome Ferns Brit. Ind. 112. Hong- 
kong ; on the bank of the Han River, Swatow ; ee 
13. P. decrescens, Christ in Bull. Acad. Géogr. Bot. ; 244. 
Lienchow River. 
14. P. Ee Thunb.; Hook. et Bak. 1, c. 172.  Lienchow River ; 
est River ; Lofoushan, | 
