106 The Philippine Journal of Science 1916 
DRYOPTERIS FEROX (Bl.) 0. Ktze. Rev. Gen. PI. 2 (1891) 812; v. A. 
v. R. Mai. Ferns 221. 
Aspidium ferox Bl. Enum. PI. Jav. (1828) 153. 
Amboina, near the town of Amboina, Robinson PI. Rumph. Amb. 439, 
July 23, 1913, river banks, altitude about 10 meters, “pinnae 25 to 40 on 
each side of the rachis.” 
Representing: Filix amboinica mas (sive agrestis) Rumph. Herb. 
Amboin. VI, 69. 
Distrib.: Malaya. 
DRYOPTERIS INTERMEDIA (Bl.) 0. Ktze. Rev. Gen. PI. 2 (1891) 
813; v. A. v. R. Mai. Ferns 199; 
Dryopteries rhodolepis C. Chr. Ind. Fil. (1906) 288 p. p. 
Aspidium intermedium Bl. Enum. PI. Jav. (1828) 161. 
Amboina, Hitoe messen, Rel. Robins. 1956, altitude about 450 meters. 
Somewhat larger than usual, and the lowest pinnae broader, much produced 
on the lower side. 
Distrib.: Malaya. 
DRYOPTERIS PSEUDO-ARBUSCULA v. A. v. R. sp. nov. 
Nephrodium . — Rhizoma breviter trunciforme, apice squamis 
longis, subulatis, integerrimis, pallide fuscis vestitum. Stipites 
conferti, infra pinnas reductas 2.5 ad 3.5 cm longi, breviter his- 
pidi. Frondes lanceolatae, 20 ad 25 cm longae, ad mediam 5 ad 
6 cm latae, acuminatae, rachide pilis longis, acutis, pallidis dense 
hispida. Pinnae herbaceae, utrinque breviter puberulae, ad 
costas venasque subtus hispidae; pinna terminalis triangularis, 
apice subcaudata et subintegerrima, basi prof unde pinnatifida; 
pinnae laterales remotae, ca. 18 utrinque, horizontales vel paten- 
tes, lineares, obtusae, costulis (main veins) obliquis, superiori- 
bus simplicibus, ceteris pinnatis, venis 1-3 utrinque, venis infimis 
anastomosantibus ; pinnae superiores adnatae, ceterae subpetio- 
lulatae ; pinnae maximae 3 cm longae, basi truncata vel subtrun- 
cata el paullo dilatata (sub-l-2-auriculata) usque ad 7 mm latae, 
margine costam versus usque ad J lobatae ; pinnae ceterae minus 
incisae vel subintegerrimae ; pinnae inf eriores sensim vel abrupte 
reductae, infimae minute auriculiformes. Lobi obtusi, integer- 
rimi vel parce repando-crenati. Sori ad venas mediales, majus- 
culi; indusium persistens, copiose hispido-ciliatum. 
Amboina, Batoe merah, Rel. Robins. 1962, August 24, 1913, terrestial 
in bed of a ravine, altitude about 20 meters; the rhizome horizontal, often 
exposed from 10 to 20 cm. 
Differs from Dryopteris arbuscula O. Ktze. in having the pinnae blunter, 
hispid on the veins beneath, the veins less numerous, less copiously anasto- 
mosing, and the indusia ciliate. 
