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 

 Iongae 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 fiavidis 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 PI. Rumph. Amb. J^6S, 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 O. Ktze., conf. C. Chr. in Ark. for Bot. 9 "i 26, fig. U. 

 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 (?). 



