xi, c, 3 v. A. v. Rosenburgh: Amboina Pteridophyta 105 
(cum costis) laevi vel sublaevi, subtus decidue pallide furfuracea, 
supra pilis proportione longis, subappressis copiose vestita. Pin- 
nulae herbaceae, glabrae, confertae vel approximatae, sessiles, 
horizontales vel subhorizontales, profunde pinnati-partitae, acu- 
minatae, acumine obtusiusculo, apicem versus serrato vel crenato, 
deorsum grosse dentato; pinnulae centrales maximae, ca. 11 cm 
longae et basi truncata ca. 2.5 cm latae. Segmenta approximata, 
subhorizontalia, lineari-oblonga, usque ad 1.25 cm longa et 3 mm 
lata, obtusa vel obtusiuscula, crenata, basi dilatata; crenae sim- 
plices, retusae vel 2-3-crenulatae, certe inferiores ciliatae, ciliis 
patentibus, articulatis, ad apicem venularum solitariis ; segmenta 
infima non raro libera, horizontalia et basi non dilatata; segmenta 
fertilia supra ad locos receptaculorum non profunde sed distincte 
impressa; costulae et venae supra pilis setiformibus sparsis, 
acutis, pallide flavidis munitae; costulae subtus squamulosae, 
squamulis minutis, ovatis, bullatis, acuminatis, acumine graciliter 
fimbriato; venae usque ad 12-15 utrinque, subtus leviter promi- 
nentes, furcatae ad duplicato-furcatae, superiores simplices. 
Sori ad venas inferiores, usque ad 8 utrinque, subcostulares ; 
capsulae pilis breviusculis (capsulas non vel vix superantibus), 
articulatis, fuscis intermixtae. 
Amboina, Hitoe messen, Robinson PL Rumph. Amb. 463, October 14, 
1913, in light forest, altitude 175 meters. 
Representing: Palmafilix alba Rumph. Herb. Amb. VI, 63. 
Doctor Robinson’s notes on this plant are as follows: Twelve meters 
high, trunk 14 cm in diameter, the basal part densely covered with purple- 
black fibrils, this fibrous portion about three-fifths of the whole diameter 
of the trunk at the base, but the fibers mostly absent above. Fronds 
about twenty-five, 3 m long, the stipe about 5.5 cm. wide at the base, up 
to 1 m to the first pinnae, the pinnae about fifteen on each side, alternate, the 
lower three to eight about equal in length and longer than those above. 
POLYPODIACEAE 
DRYOPTERIS Adanson 
DRYOPTERIS DIDYMOSORA (Parish) C. Chr. Ind. Fil. (1906) 262; 
v. A. v. R. Mai. Ferns 225. 
D. parasitica 0. Ktze., conf. C. Chr. in Ark. for Bot. 9 11 : 26, fig. 4. 
Nephrodium didymosorum Parish ex Bedd. Ferns Brit. Ind. (1866) 
t. 200. 
Amboina, Rel. Robins. 1959, July 23, 1913, riverside, town of Amboina, 
locally known as paku. bau busuk. 
Robinson’s specimen agrees almost exactly with Beddome’s plate men- 
tioned above. The sori, however, are apparently smaller, and the conti- 
guous pairs placed so closely, that each pair of sori seems to be a single 
sorus only. New to Amboina. 
Distrib.: Northern India, southern China, and the Malay Peninsula (?). 
