CO. ACROSTICIIUII. 409 



linear scales, dark chesnut in the centre, grey at the edi^e ; barren fr. 3-4 in. ]., 

 1-]^ in, hr., blunt at both ends ; texture coriaceous ; both sides densely clothed 

 with pale-brown linear scales ; veiris hidden ; fertile fr. smaller than "the other 

 and on a much lunger stem.— Ilk. iS'p. 5. p. 241. Hk. (£• Gr. t. 2. 



Hab. Tristan d'Acunha, and reported also from Bourbon and Mauiitius. — Habit of 

 A. conforme. 



B. Fronds G-18 inches long. Sp. 52-Go. 



62. A. cinnamomeum. Baker ; rhizome short-creeping, the scales dense, linear, 

 bright reddish-brown ; st. 3-4 in. 1., firm, densely clothed with similar but 

 narrower squarrose scales ; barren fr. 4-6 in. 1., §-^ in. br., narrowed gradually 

 to both ends ; texture coriaceous ; both sides, especially the lower one, densely 

 clothed with long bright-yellow hair-like scales, which are scarcely at all 

 flattened or ciliated ; veins hidden ; fertile fr. shorter and blunter than the other, 

 the stem longer. A. Mannianum, Mett. 



Hab. Cameroon Mountains and Clarence Peak, Fernando Po, G. Mann. — Tliisagrte? 

 with the next in size and habit, but the scales are quite different. 



53. A. lepidotuin, Willd. ; rhizome thick, woody, the scales very dense, linear, 

 glossy, black; st. 1-3 in. 1., firm, scaly throughout; barren fr. 3-6 in. 1., 

 §-| in. br., the point usually blunt, the base cuneate or rather rounded ; texture 

 coriaceous ; scales furfuraceous and white on the upper surface, large, dense, 

 ovate, ciliated, and ferruginous on the lower one, those on the midrib with a 

 black middle ; veins hidden; fertile fr. similar to the other, but the stem longer. 

 —Hk. Sp. 5. p. 238. 



Hab. Andes, from Columbia to Peru. — To- this appear to belong A. Enrjelii, Karsten, 

 A. Domheyanum, F^e, the West India n^, ixstitum, Schlecht\ and Mexican A. fulvum, 

 M. & G-., and probably A. rufescens, jLi ehm. It may be a aV arf mountain variety of 



54. A. strictum, Raddi ; rhizome woody, short-creeping, densely clothed with 

 small lanceolate dark chesnut-brown conspicuously ciliated scales ; st. 1-2 in. 1., 

 clothed with similar scales ; barren fr. 4-6 in. 1., ^-§ in. br., narrowed to both 

 ends ; texture subcoriaceous ; veins mostly simple ; upper surface nearly or quite 

 naked when old, lower densely clothed with bright reddish-brown scales, which 

 are almost reduced to stellate tufts of hairs ; fertile fr. about equal to the other, 

 but the stem longer. — Hk. Sp. 5. p. 225. A. viscid um and angustum, Fee. 



Hab. Brazil and Columbia. — This bears the same relation to auricomum that lepidotiun. 

 does to muscosum. 



55. A. villosum, Sw. ; rhizome woody, but not thick, densely clothed with 

 bright-brown soft fibrillose scales ; 5^. tufted, 2-4 in. 1., slender, densely clothed 

 with spreading scales like those of the base ; barren fr. 6-9 in. 1., 1-1| in. br., the 

 point acute, the lower part narrowed gradually ; texture thin and flaccid ; both 

 sides with scattered scales like those of the stem, and the edge usually densely 

 ciliated ; veins distant, usually once foi'ked, clubbed at the point and not 

 reaching the edge ; fe)-tile fr. much smaller than the other. — Hk. Sp. 5. p. 225. 

 Hk. 4' Gr. t. 95. 



Hab. Mexico and Cuba to Peru. — A. sejanclum. Kuhn, gathered by Barter at Sierra 

 Leone, is more robust and more scaly. A. undulalum, Willd., Hk. Sp. 5. p. 212, is 

 evidently a form. It is larger and thinner than the type, with main veins two lines 

 apart. A. setosum, Liebm., is a small form, less scaly than usual, and A. Plumieri, Fee, 

 Hk. Sp. 5. p. 226, a thin variety, with the edge of the frond repand. This may be known 

 from all its neighbours, except cinnamomeum, by the scales, ^however dense, being 

 uniform, and not at aU flattened. 



8 F 



