- 1:.' - 



SLibsetifûrm (liardly spiniform) flbrils; pinnulae of lower pinnae 

 to ca 31/2 cm. broad, deeply pinnatifid ; lobes to ca 7 mm. broad 

 nt the base and the broadly rounded apex, somewhat narrower 

 near the base; edges subentii-e in the smallest, crenate in the 

 largest lobes; veins ca 5 — 7 on a side, simple in the smallest, 

 once or twice forked in the largest, lobes. 



D. polypodioides differs from this in having the rachises 

 smooth, and the largest pinnulae narrower.— D. asperum has 

 the rachis rauricate with short-conical warts, the pinnulae nar- 

 rower, and the veins more nimierous. 



Siimaira. 



llr.yisai'Êa |>n>j»iiBf|EBSs (Wall)., ,/. M'm.. in Journ. of 

 Bot., IV, (il; V. A. V. K., Mal. Ferns, 09^; Poly podium propin- 

 quum, Wall., List, No. 293. 



Omit the variety mmatrana, which is a form of 1). pleuri- 

 dioides Pr. only. 



Bda'.vnêlB'ii) B»icui'B(li(»Ê<le<>i. /P**.. in Ann. Mus. Bot. L. B. 

 II, 22'J; V. A. V. R., Mal. Ferns, (397. 



Also in Sumatra { ? No. 94). 



Lastraea. — Stipites 55 cm. longi vel longiores, cum rachide 

 pallide fusci et juvéniles probabiliter minutissime puberuli. Frondes 

 ovato-lanceolatae, ca 135 cm. longae, 2-pinnatifidae, acuminatae. 

 Pinnae herbaceae, supra glabrae, subtus minutissime puberulae, 

 glabrescentes, remotae, lineari-lanceolatae, apice sensim longe 

 acuminatae; pinnae superiores erectopatentes, sessiles vel adnatae; 

 pinnae inframediales ma.\iniae, horizontales vel patentes, ca 25 — 30 

 cm. longae, ca 2 cm. latae, profunde pinnatitidae, basi angustatae; 

 pinnae infimae reductae sed non auriculiformes, conspicue petiola- 

 tae. Lobi patentes, lineari-oblongi, subfalcati; lobi ma.ximi ca 

 2 — 3 mm. lati, basi pauUo dilatati, obtusi, integerrimi, margine 

 in sicco revoluti, venis 20 — 25 utrinque, simplicibus, arcuatis. 

 Sori nunierosi, superficiales, mediales vel inframediales; indusium 

 minutissimum, rudimentai'e. 



Resembles in gênerai aspect D. immersa (). Ktze. but the 

 sori superlicial, not supramedial, and the indusium hardly détectable 

 even in the youngest sori. 



