2. 0. bipinnata, Hook. ; Hook, et Bak. 1. c. 426. Mt. Parker 



above Taitam reservoir, Hongkong ; Long Harbour, Mirs 

 Bay, Hongkong New Territory. 



3. 0. regalis, Linn. ; Hook, et Bak. 1. c. 427. On Mt. Parker, 



Mt. Gough and jMt. Cameron, but not common in Hong- 

 kong ; abundant on Maonshan, Hongkong New. Territory ; 

 Lienchow River. 



33.— LYGODIUM. 



Key to species. 



1. Fully developed barren pinnules pal- 



mate 

 Fully developed barren pinnules pin- 

 nate... ... — 



2. Pinnules once pinnate ... 

 Pinnules twice pinnate at the base 



3. Lamina of fertile segments much 



reduced 

 Lamina of fertile segments not reduced 



1. diclwtomum. 



2. 



2. scandens. 



3. 



4. japonicum. 



3. pinnatifidum. 



1. L. diehotomum, Swartz ; Hook, et Bak. Syn. Fil. 437. Behind 



the Buddhist temple, Causeway Bay, ravines on Mt. 

 Gough, Cape d'Aguilar and in the Little Hongkong woods, 

 Hongkong ; Kowloon hills, Hongkong New Territory. 



2. L. scandens, Swartz ; Hook, et Bak. 1. c. 437. Common on 



the south side of the island, Hongkong ; at Shingmim, 

 Hongkong New Territory ; hill near Chaochaufu. 



3. L. pinnatifidum, Swartz ; Hook, et Bak. 1. c. 438. Near 



Fanling, and between Hokun and Kowloon City, Hong- 

 kong New Territory ; near Yit-hai Swatow. 



4. L. japonicum, Swartz ; Hook et Bak. 1. c. 439. Very common 



in the island, Hongkong ; near Shingmun, Hongkong New 

 Territory ; Whampoa ; Macao ; Lofoushan. 



34.— ANGIOPTERIS. 



A. eveeta, Hoffm. ; Hook, et Bak. 1. c. 440. 

 Parker, and Sheko ravine, Hongkong. 



Mt. Gough, INlt. 



35.-OPHIOGLOSSUM. 



Key to species. 



Rootstock slightly tuberous ; sterile 

 portion of frond lanceolate gradually 

 narrowed below \. japonicum. 



Rootstock not tuberous ; sterile portion 

 of frond ovate rounded or sub- 

 cordate below 2. pedunculosum. 



1. 0. japonicum, Prantl; O. nudicaule, Hook, et Bak. Syn. Fil. 445 



(partly). In the ravine south of Wanchai Gap, Hongkong. 



2. 0. pedunculosum, Desv.; O reticulatum. Hook, et Bak. 1. c. 446 



(partly). A weed in flower pots in the Botanic Gardens, 

 Hongkong, and wild " above Victoria near the reservoir,' 



