222 Bulletin Jar d. Bot. Buitenzorq, Série 1 11. Vol. V, Livr. 3. 



apiculati; lobi infimi antici maximi, subauriciiliformes; venae in segmentis 

 ultimis solitariae. siibtus parce crispato-pilosae, glabresceiites, superiores 

 simplices, sequeiites furcatae; venae infimae anticae parce pinnatae. Sori 

 infer costam marginemque mediani, relative magni, ad venulas anticas 

 venariim ramosariim terminales; indusiiim parvum, peltatuni, brunneum, 

 obsolète eroso-denticulatum, 



Ternate: Fo ra m ad ia hi, on trunks of trees in forest, ait. 700 m. 

 (V. M. A BEGUIN No. 1096, 12 November 1920) ; North Fora m ad iahi, 

 in forest. ait. 1250 m. (V. M, A. BEGUIN No. 1491, 9 March 1921). 



Ptcris orientalis V. A. V. R., Bull. Dép. Agr. 1. N. XVllI (1908), 12.-var. 

 glabra V. A. V. R., Bull. Btz. Vil (1912), 26; Mal. Ferns. 355 ; Supplem 1, 247. 



Stipe and rhachis varying froni pale-reddish-brown to piirple or cas- 

 taneous. Pinnae to 30 cm. long, at length glabrescent, witli the base 

 broadly roiinded to truncate or cordate. 



Forma typica. Also in Ternate: Ta bah a wa, in forest garden, ait. 

 250 m (V. M. A. BEGUIN No. 999, 19 October 1920). 



Var. glabra: Surfaces naked, even when young. 



Pteris pellucida PR., Rel. Haenk., I, 55; v. A v. R., Mal. Ferns, 3.57; 

 Supplem. I, 247. 



BiJNNEMEljER's Nos. 8496,0741 from Sumatra (Mt. Koerintji) hâve 

 some of the froiids with the 2 lower pair of pinnae either forked or 

 semipinnatifid with 2—3 remote segments on the posterior side. 



Pteris melanocaulon FÉE, Gen. Fil., 5e Mém,, 127; v. A. v. R, Mal. 

 Ferns, 358. 



Also in Ternate: Fitoe, in ravine, ait. 2 m. (V. M. A. BEGUIN 

 No. 1059, -29 OctolDer 1920). 



"^ Pteris longipes DON, Prod. FI. Nep., 15; V. A. V. R., Mal. Ferns, 369.— 

 Pt. Zollingeri Mett. in MlQ. Aiin. Mus. Bot. L. B., IV, 97.— Pt, radicans 

 Christ var. Javanica v. A. v. R., Bull. Btz. Vil. (1912), 27.— Pt. pelliicens 

 AG. Rec, 43. 



The spécimens from Java, Sumatra, Ceylon, British India, Assam, 

 Luzon, Mindanao and Alabat Island, occuring in the Buitenzorg Fierbarium, 

 represent so many forms that this species is either very variable or it is a 

 collective species and may be spliced iiito several distinct species. Our 

 spécimens are distinguished as follov^s: Stipes stramineous or brown to 

 fuscous; rhachises naked or shortly deciduously fibrillose, smooth or at 

 length puncticulate-asjîerulous by the persistent bases of fallen fibrils; pin- 

 nulae adhèrent or articulated to the rhachis; costae above spiiuilose, beneath 



