339 



Fronds tripinnate 

 Fronds bipinnate 



Fronds deltoid 



Fronds ovate-lanceolate 

 Fronds deltoid, pedate 

 Fronds lanceolate 



3. 



1. Fordii. 



3. tenuifolia, 



2. mysurensis. 



4. argentea, 



5. farinosa. 



1. C. Fordii, Bak. in Journ. Bot. 1879, 304. Hills near Chao- 



chaufu, Swatow ; North Eiver. 



2. C. mysurensis, TVall. ; Hook, et Bak. Syn. Fil. 135. Among 



granite boulders. Long Harbour, Hongkong New Terri- 

 tory ; on old walls, Canton ; Cockscomb rocks. West 

 Kiver. 



3. C. tenuifolia. Smarts ; Hook, et Bak. 1, c. 138. Common on 



dry banks especially on the south side of the island, Hong- 

 kong ; near Shingmun, Hongkong New Territory ; near 

 Yit-hai, Swatow. 



4. C. argentea. Hook. ; Hook, et Bak. 1. c. 142. Lienchow Eiver ; 



North Eiver. 



5. C. farinosa, Kaulf. ; Hook, et Bak. 1. c. 142. Phoenix Mt., 



Swatow ; Lienchow Eiver. 



11.— ONYCHIUM. 



1. 0. japonicum, Kunze ; Hook, et Bak. 1. c. 143. On Mt. Gough, 

 and plentiful on the southern face of Violet hUl above 

 Eepulse Bay, Hongkong ; Lantao Island, Hongkong New 

 Territory ; Lofoushan ; Kunyam-ngam, N. Eiver. 



12.— PELL AE A. 



Key to species. 



Pinnae cut nearly down to the rachis... 

 Pinnae cut down to the rachis 



1. geraniaefolia. 



2. nitidula. 



1. P. 



2, P. 



geraniaefolia, Fee ; Hook, et Bak. Syn. Fil. 146. North 

 Point, Hongkong ; Long Harbour, Hongkong New Terri- 

 tory ; Canton ; White Cloud hills near Canton ; North- 

 west Eiver. 



nitidula, Bak. ; Hook, et Bak. 1. c. 149. On bare limestone 

 locks along the Lienchow Eiver. 



13.— PTERIS. 

 Key to species. 



1. Veins anastomosing 

 Veins free 



2. Lower pinnae divided ... 

 Lower pinnae undivided 



3. Pinnae 12 to 60 

 Pinnae 3 to 5 ... 



4. Pinnae 12 to 24 

 Pinnae 40 to 60 



21515 



13. incisa. 



2. 



5. 



3. 



4. 

 5. deltodon. 

 2. insignis. 

 1. longifolia. 



J 2 



