r 
1 
niiLirriNE srECiEs of dryopteris. 191 
4 
Leptochihis, Gymnopieris^ Polyhotrya^ Egenolfia^ Sle^iosemm, and Cae- 
nopteris with Aspidium^ in a broad sense, appears to me to acquire a new 
support; and what is more, although perhaps in the cases where it has 
not yet been possible to find the aspidioid type of all acrostiehoid plants, 
^ 
it is probable that the aspidioid type has not been preserved or that it 
has been so ' modiHed as to be unrecognizable. Be that as it may, 
for Steiiosemia one must admit the immediate descent of Pleocneinia 
menihranifolia {Dictyopteris- Chattagramica Clarke) as Beddome has 
asserted.^ Likewise I now connect my GymnopiGris Bonii ^ from Tonkin, 
directly with Aspidium repanduni Willd. The contention that "Acros- 
tichum" is only "Aspidium" with reduced fertile pinnae, appears to me 
to be better established than ever. Is this a step in advance in the 
development or a degeneration? The example of Dryopteris cancsccns, 
where the incontestable deformation of the pinunf both fertile and 
sterile, is accompanied by the acrostiehoid formation iis to the soriferous 
parts, appears to. me to point strongly to the latter; that is to say, 
an aberration and weakening of the type, which one can scarcely call 
only teratological, because the influences that have caused the changes 
are unknown. 
t 
OBSERVATIONS. , 
1. In my Filices Tnsularum Philippinanim ^ I have noted Aspidium 
\ ■ 
Fauriei var. elatius Christ and A. grammitaides. Both belong in Athy- 
Hum, with aspidioid sori, as is the case with Alhyrlam oxyphjllu-m which 
is found in the Philippines with absolutely aspidioid sori. 
2. In his PolypodiaceEC of the Philippine Islands, ** Copeland includes 
Nephrodium asperulum (J. Sm.) Copel. The species was based on No. 
63 Giiming, Polypodvum asperulum J. Sm., and the specimen in the 
TTerbarium of the Bureau of Science is to me Microlepia speluncae 
(Linn.) Moore, with submarginal sori. 
3. Copeland'^ admits Neplirodium rngidosum- (Labill.) Copcl., but to 
me the plant indicated is Hypolepis. Species of Ilypolepis with the sori 
more or less intramarginal give rise to some doubt as to their proper 
disposition. There is a form in the Philippines which has a rhizome 
often, if not always, creeping, which is generally a good character of true 
Ilypolepis and which indicates the relationship of that genus with 
Pteridium. This, form was considered by me at first as Dryopteris 
setigera (Blume) 0. Ktz., and later as Aspidium vile Kunze, of Java, 
with which it has a great resemblance. It has been collected on Mount 
Apo, Mindanao, by Copeland (No. 1462) October, 1904, and on Mount 
3 Suppl. Ferns Brit. Ind. 48, 40. 
*Bull. Herb. Boiss. II 4: GIO. 
"^Bull. Herh. Boiss. 6 (1898) 193. 
^Oovt. Lab. Pubh 28 (1905) 25. 
' L. c. 26. 
