"— 166 — 



breviter acuminatis, basin dilatatam, orbiciilari- vel ovatc-cordatam versus 

 plus minusve cuneato-contractis, venis et soris venarum sororumque PI. 

 myriocarpae Moore more. 



Barreu fronds claspiug the slender stenis and branches of small trees 

 or slirubs, orbicular- or reniform-cordate, to 10 cm. each way, tha basai 

 lobes overlapping or separated by a uarrow, acuie sinus; venation as in 

 PI. Annabellae v. A. v. R Fertile fronds to + 40 cfu. long, the upper part 

 to 7 cm. broad; sori copious, occupying the upper half of the frond only. 



Forest; ait. 1200. m. 



Sumatra [Agam, Boekit Batoe Banting, E. Jacobson, 16 June 1918). 



I 



Pleopeltis congregatifolia, v. A. v. R. 



Eupleopeltis, Atactosia, Pleuridium. — Frondes sessiies, tenues, mem- 

 branaceo-herbaceae, glabrae, lineari-oblanceolatae, 50—70 cm. longae, 4—7 

 cm. latae, obtusiusculae ad obtuse acuminatae, integerrimae, basi rotundatae 

 vel late rotundato-cuneatae; costa supra quadraugularis, lateraliter canali- 

 culata, subtus acute carinata, potius triquetra; venae latérales primariae 

 distinctae, paullo obliquae, venis secundariis transversalibus unitae, areolas 

 elongato-quadrangulares, costae parallelas, utrinque ± 6— 7-seriatas formant- 

 es, areolas minores, magis irregulares includentes; venulae liberae in areolis 

 secundariis partim adsunt, partim desunt. Sori minuti, irregulariter sparsi, 

 'A — '/2 partefîi superiorem frondium occupantes. 



Rhizome climbing, bearing at a height of 2 — 8 m. numerous groups of 

 fronds, the groups spreading in varions directions, resembling superficiaily 

 tufts of Asplenium nidus L.; scales peltate-ovate, acuminate, brown, eroso- 

 denticulate, deciduous; fronds of each group approximate or somewhat remote, 

 ascending. 



Forest; ait. 350-475 m. 



Sumatra {Dell, Sibolangit J. A. Lôrzing Nos. 5532, 5565, 22 February 

 — 20 March 1918). 



Pleopeltis m u r k e 1 e a n a, v. A. v. R. 



Eupleopeltis, Pleuridium. — Rliizoma longe repens, in sicco nigrum, 

 albo-calcareum ; squamae paucae, parvae, sparsae, orbiculares vel sobovatae, 

 peltatae, atro-castaneae Stipites remoti, ± 10—15 cm. longi, glabri, teretes, 

 auguste 2-iuarginati, in sicco pallide brunnei ad castanei. Frondes coriaceae, 

 glabrae, lineari-lanceolatae, + 20 — 25 cm. longae et 3 — 5 cm. latac, 

 subintegerrimae, auguste subpellucido-iuarginatae,apicem breviter acuminatum 

 et basin cuneatam, subdecurrentem versus sensim angustatae; venae latérales 

 primariae distinctae, flexuosae, horizontales vel (certe apicem versus) paullo 

 ascendentes, saepe furcatae ad pinnatim ramosae, apicem versus graciliores, 

 marginem frondis non attingentes. Sori magni, subrotundi, utrinque 1 — 2- 

 seriati, paullo sed distincte immersi, supra papillas discoideas, non valde 

 elevatas, apice impressas formantes. 



Resembles at first sight the simple form of PI. phymatodes Moore. 

 Sori in 1 row on each side, nearer the costa than the margin, as a rule 



