318 48. POLYPODIUM, DICTYOPTERIS. 



82. P. (Dicty.) megalocarpum, Hk. ; fr. 2-3 ft. L, 1 ft. or more br., the upper 

 part deeply pinnatifid, with lanceolate pinnatifid lobes, below this 6 pairs of 

 distinct pinnce, the lowest 6-9 in. 1., 3 in. br, with entire blunt oblong lobes 

 J in. br., reaching more than halfway down ; texture subcoriaceous ; under surface 

 glossy ; areolce copious, without free veinlets ; sori large, in two distinct rows. 

 Hk. Sp. 5. p. 102. 



Hab. Java, T. Lobb. This has a good deal the general habit of difforme, but the 

 ultimate lobes are longer and narrower, and the sori very different. 



83. P. (Dicty.) ferrugineum, Baker ; st. \\ ft. 1., clothed densely below, and 

 less so above, with ferruginous down and large lanceolate ferruginous scales ; 

 fr. 12-15 in. ]., 8 in. br., the lowest pinnae much the largest, deltoid, with distinct 

 lanceolate pinnl., those of the lower side cut down to the rachis into oblong 

 sinuated or pinnatifid lobes ; texture thinly herbaceous ; under surface sprinkled 

 with ferruginous hairs ; areolce confined to a single costal series without free 

 veinlets ; sori biserial. Phegop. Mett. Fil. Ind. p. 224. 



Hab. New Guinea, Zippelius. 



84. P. (Dicty.) tenerifrons, Hk. ; rhizome creeping, fragile ; st. very slender, 

 8-12 in. 1. ; fr. 6-12 in. each way, deltoid, the upper part pinnatifid, below this 

 1-3 distinct pinnce, the lowest much the largest, deltoid, the lowest side produced 

 with deeply pinnatifid lanceolate lobes 2-3 in. 1. ; texture very thin, colour 

 bright-green ; areolce copious, without free veinlets ; sori in rows near the main 

 veins. Hk. Sp. 5. p. 104. 



Hab. Moulmein, Parish, 92. 



85. P. (Dicty.) macrodon, Reinw. ; rhizome decumbent ; st. 1 ft. or more L, 

 slightly scaly below ; fr. 2-3 ft. 1., 12-18 in. br., the apex deeply pinnatifid, 

 below this numerous lanceolate pinnce, the lowest sometimes 1 ft. L, 6-8 in. br., 

 cut down to a narrow wing on the rachis into pinnatifid, close, lanceolate pinnl. ; 

 texture thin ; both sides naked ; areolce copious, without free veinlets ; sori small, 

 in rows near the main veins. P. Cumingianum, Hk. Sp. 5. p. 103. 



Hab. Philippines, Malaccas, Solomon Isles, Fiji. 



86. P. (Dicty.) Cameroonianum, Hk. ; st. 4 ft. 1., glossy ; fr. 3-4 ft. 1., 2 ft. br., 

 the upper part pinnatifid, with deep lanceolate lobes ; lower pinnce deltoid, more 

 than 1 ft. 1., 6-8 in. br., cut down below nearly to the rachis into pinnatifid 

 lanceolate lobes ; texture herbaceous, both sides naked ; areolce copious, with free 

 veinlets ; sori in rows near the main veins. Hk. Sp. 5. p. 104. 



Hab. Cameroon Mountains, Mann, 1362. It is by no means clear that this and the 

 two preceding are distinct from one another, and from Neph. cicutarium. 



** Sori copious, scattered irregularly. Sp. 87-90. 



87. P. (Dicty.) Brongniartii, Bory ; fr. 2-3 ft. L, 12-18 in. br., the apex 

 pinnatifid, with deep, lanceolate, repand lobes ; below this numerous distinct 

 pinnce, the lowest 6-9 in. L, lanceolate, cut three-quarters of the way down 

 throughout into acute, subentire, lanceolate lobes ^-1| in. L, J-f in. br. ; texture 

 subcoriaceous ; areolce copious, with a few free veinlets ; sori rather small and 

 quite confined to the margin of the lobes. Hk. Sp. 5. p. 103. 



Hab. Malay Isles and Philippines. Habit of P. difforme, but well distinguished by its 

 marginal sori. 



88. P. (Dicty.) difforme, Blume ; st. tufted, erect, 1 ft. or more 1., the lower 

 part scaly ; fr. 3-4 ft. 1., the upper pinnce lanceolate, entire, or with broad blunt 

 or falcate lobes reaching halfway or more down to the rachis, the lower ones 



