246 41. SCOLOEENDKIUM, § EUSCOLOPENDEIUM. 



irregular intramarginal line ; sori often 1^-2 in. 1. — Hi:, Sp. 3. p. 271. le. t. 937. 

 Asplenidiotyon, J. Sm. 



Hab. Himalayas and Malayan Peninsula. — This has the same close relation to A. macro- 

 plvylVyim that eUgams has to fraxinifolium. 



280. A. (Hemi.) marginatwm, Linn. ; st. 2-3 ft. 1., strong, erect, woody, 

 sometimes | in. thick at the base ; fi: simply pinnate, 4-6 ft. 1. ; pinncB in 

 several opposite pairs, the lowest 1-2 ft. 1., 3-4 in. br., the edge entire, the base 

 often cordate ; tesstiire papyraceo-herbaceous ; rachis naked, polished ; veins 

 anastomosing copiously in the outer third of the space between the midrib and 

 edge, bounded by a distinct intramarginal line ; sori long, linear, confined to the 

 free veins Hk. Sp. 3. p. 271. Fil. Ex. t. 63. 



Hab. Tropical America, from Cuba and Venezuela to Peru and Brazil. 



Gen. 39. Allantobia, Wall, {in part). 



Sori dorsal, linear-oblong, attached to the primary veins. Invol. the same 

 shape as the sorus and quite enclosing it, bursting in an irregular line down to 

 the centre. A single simph/ pinnate species with thin ample pinnce, differing from 

 Asplenium in the dehiscence of the involucre. Tab. IV. f. 39. 



1. A. Brunoniana, Wall. ; fr. often 2 ft. 1., 1 ft. br. ; pinrueA^Q in. 1., 1 in. br., 

 entire ; veins forked near the riiidrib, two rows of hexagonal areolae occupying 

 the outer half of the space between the midrib and the edge, bounded by an 

 intramarginal line ; sori confined to the anterior vein of the first fork. — Hk. Sp. 

 3. p. 275. 



Hab. Himalayas (up to 6,000 ft.}, Ceylon, Java, Tahiti. — Asplen. javani(yu,m, Blume, 

 is the oldest name. 



Gen. 40. Actinioptems, Linh. 



Sori linear-elongated, submarginal. Inwl. the same shape as the sorus, folded 

 over it, placed one on each side of the narrow segments of the frond opening 

 towards the midrib. A single species, at once recognizable hy its flahellate habit, 

 like a palm-tree {(Jhamcerops) in miniature, vjith fruit in character intermediate 

 between Aspleniese and Pteridese. Tab. IV. f. 40. 



1. A. radiata. Link ; st. densely tufted, 2-6 in. 1. ; fr. like a fan, 1-1^ in. deep, 

 composed of numerous dichotomous segments which are rush-like in texture, 

 not more than ^ lin. br., the veins few and subparallel with the indistinct 

 midrib, the segments of the fertile frond longer than those of the barren one. — 

 Ic. Fil. t. 976. — 13, A. australis. Link ; ieym. fewer, longer, subulate at the point. 

 —Ic. Fil. t. 976. Hk. Sp. 3. p. 276. 



Hab. Throughout India, especially in the Peninsula, Ava, Ceylon, Arabia, Upper 

 Egypt, Abyssinia, Masoaren Isles, Zambeti-land, Macalisberg, Angola. For the type 

 Acrostichum dicAotomum, Forsk., is the oldest name. 



Tribe 9. Scolopendrie^. 



Sori as in Aspleniese, except that the involucres are arranged in pairs and open 

 towards each other. Gen. 41. 



Gen. 41. Scolopendeium, Sm. 



Characters of the tribe. Tab. IV. f. 41 . 



§ Euscolopendrium. Veins free or anastomosing only casually. Sp. 1-4. 



1. S. imlgare, Sm. ; st. 4-8 in. 1., fibrillose below ; fr. 6-18 in. I., 1^-3 in. br., 

 ligulate-oblong, entire, the base cordate ; texture subcoriaceous ; veins in groups 



