102 POLYPODIUM, § DICTYOPTERIS. 



Dictyopteris, Pr. Tent. Pterid.p. 194. /. 8./. 7. Moore. Polyp, 

 diffoi-ine, Bl. Fil. Jav. 135. Aspidium, BL En. Fil. Jav.p. 160. 

 Dictyopteris, Moore, Lid. Fil. p. 90. Phegopteris, Metten. 

 Fil. Hart. Lips. p. 84. t. 85. /. 29. Pheg. macrodonta, Mei- 

 ten. Phegopt. p. 31. Dictyopteris, Pr. Tent. Pterid. p. 

 194. Fee, Gen. Fil. p. 267. t. 31 A.f. 2. Polyp, confluens. 

 Wall. Cat. n. 325. Polyp, exitnium, Kze. in Bot. Zeit. iv. 

 p. 424. 



Hab. Abundant in the Malay islands: Borneo, Z)<? V?-iese, n. 67 , Thos.Lobb, 

 Motley ; Luzon, Cuming, n. 114 (not n. 9) ; Malacca, Wallich, n. 325, and n. 379 

 (marked Aspid. variolosum), Griffith (6-7 feet long) ; Moulniein, Parish, n. 119 ; 

 Fiji islands, Harvey, Seemann, n. 746. — The present and following species are 

 among Polypodia what Sagenia and Euasjyidium are among Aspidia, and no de- 

 pendence can be placed on the presence or absence of free veinlets. 



404. P. {p\ctyoY>tQV\^) petrophyum, Bl.;" fronds bipinna- 

 tifid (rather pinnate the pinnae pinnatifid) membranaceous 

 subglabrous, pinnse sessile a foot long oblongo-lanceolate acu- 

 minate pinnatifid^ segments subfalcato-oblong obtuse entire, 

 those of the lowest pinnse elongated rather acute coarsely 

 crenate" (not so represented), "stipes and rachis channelled 

 above and subpubescent." Bl. Fil. Jav.p. 103. /. 71 • Metten. 

 Aspid. p. 32. Dictyopteris, Moore, Lnd. Fil. /j. 318. Aspidium 

 saxicola, Bl. En. Fil. Jav. p. 160. 



Hab. Java, Blume. — I have seen no authentic perfect specimen of this ; but 

 probably it will prove to be one of the many varieties of P. irregulare. Blume 

 himself says of this, " A P. irregulari satis superqne distinguitur laciniis magis 

 elongatis sororumque dispositione." Mettenius places it in a section, "Maculae 

 appendiculatffi," and P. irregidare in one " Maculaj inappendiculatae." 



405. P. (Dictyopteris) megalocarjmm, Hook.; caudex?, 

 stipes (upper portion only) and rachis dark ebeneous brown 

 pubescent, frond ample 2 feet and probably more long 1 foot 

 and more wide coriaceo-membranaceous opaque paler and 

 glabrous beneath above villosulous with minute scattered 

 pale paleaceous hairs pinnated pinnatifid at the apex, pinnse 

 subopposite 4-9 inches long 1^-3 inches wide subfalcate 

 from a broad truncated sessile base broad-oblong shortly 

 acuminated and all uniformly deeply pinnatifid to about 

 three-fourths of the way to the costa, segments oblong ob- 

 tuse quite entire sinuous obtuse, veinlets reticulated with 

 rather small areoles (no free included veinlets), costular 

 areoles the largest, most of the veinlets in the segments free, 

 sori universal on all the pinnae very large compital regularly 

 arranged one or at most two series on the disk parallel with 



