THE PLOEA HONGKOiraENSIS. 53 



in A. coniifoUum, Wall. A. laeervm, Sw., referred to A. filioo- 

 mas by Sir "W. Hooker, appears to me a well-marked plant, with 

 a not very distant relationship to A. acrostichoides, Sw. The 

 inconstancy of form of the indusium in most of the species 

 of this group sufficiently shows how unstable a genus Ifephro- 

 dium is, though retained by both Hooker and Baker. It is, ia 

 fabt, not a natural subgenus or section ; for its adoption as such 

 removes aUied species to a distance from each other. 



68. Aspidium amabile, Blume ; Hook. Sp. Fil. iv. 25, t. 225. 



I have specimens from the mainland immediately opposite 

 Hongkong, where I believe it occurs also. A native likewise of 

 Nipa], Ceylon, the Malayan isles, Formosa, and Japan. 



*Aspidiiun uliginosum, Kze.; Mett. Fil. Hort. Lips. 94. ( = Polv- 

 podium tenericaule. Wall. ; Benth. Fl. Hongk. 459.) 



♦Aspidiujn calcaratTun, Blume. ( = Nephrodium calcaratum. Hook. Sp. 

 Fil. iv. 93. — Aspidium ciliatum. Wall. ; Benth. Fl. Hongk. 455.) 



'Aspidium glanduligerum, Kze.; Mett. Monogr. Aspid. 86. (=A. 

 Thelypteris, Benth. Fl. Hongk. 475^ but not of Linnteus. — Nephro- 

 dium gracilescnes. Hook. Sp, Fil. iv. 93, but not Aspidium gra- 

 dlescens of Blume.) 



69i Aspiditun sophoroides, Sw. ; Mett. in Miq. Ann. Mus. Bot. Lugd.- 

 Bat. i. 231. (= Nephrodium sophoroides, Desv. ; Bak. Syn. Fil. 289.) 

 Not very common. Extends along the coast of China, and 

 occurs also in Formosa, Looehoo, and Japan. 



*Aspiditiin latipiiuia, mihi. (=A. moUe y. paucisorum. Hook, and 

 Am. Bot. Beechy, 256. — A molle, var. latipinna, Benth. Fl. Hongk. 

 455. — Nephrodium latipinna. Hook, and Bak. Syn. Fil. 392.) 

 Common in the island and, as I can testify from many years' 

 observation, very constant ia character, so that I have never 

 seen reason to doubt its specific rank. Occurs also on the main- 

 land, and in Java. 



70. Aspidium heterocarpon, Blume; Mett. in Miq. Ann. Mus. Bot. 



Lugd.-Bat. i. 233. 

 Occurs also in Java, Sumatra, and Borneo. 



*Aspidium subtriphyllum. Hook. Sp. Fil. iv. 52. ( = Polypodium 

 subtriphyllum. Hook, and Am. Bot. Beechey, t, 50. — Aspidium tri- 

 foliatum, Benth. Fl. Hongk. 454, part., but not of Swartz.) 



71. Aspiditun Leuzeanum, Kze. ; Mett. Monogr. Aspid. 116. 



An uncommon fern in Hongkong, found also on the Chinese 



