46 



allies. This is the largest local species of the glabrous section, 

 marked also by its long stipites. 



11. A. viscosum, Swartz. — Root-stock short-creeping, densely clothed 

 with blackish very fine scales ; stipites numerous, crowded, lateral on 

 the root-stock, slender, 3-6 in. 1. very finety scaly throughout, light or 

 dark brown; fron'Js linear-lanceolate, ^-1 ft. 1. J-f in w., acuminate or 

 acute, the base tapering or cuneate, chart aceous or subcoriaceous, dark 

 green, lighter be leath ; both surfaces viscid, and sprinkled over with 

 stellate minute scales, more densely clothed along the pi'ominent dark- 

 brown midrib beneath ; veins simple a^d forked ; fertile fronds nar- 

 rower, on longer stipites. — PI. Fil. t. 129. (Very artificial.) Hook, 

 and Grev. Icon. Fil t, 64. 



Very plentiful on open banks at 5,000 ft. altitude. The stipites 

 arise obliquely from the root-stock, along the upper side of which they 

 are confined, and are densely crowded. Those of the barren fronds 

 are a darker brown and only half the length of those of the fertile. 

 The surface is very glandulose and viscid, and the scattered minute 

 lacerate or stellate scales are grayish. Those dovn the midrib are 

 denser. It differs from Ruacsaro by the shorter, rather broader, more 

 lanceolate than ligulate acuminite, stellate scales, more glandulose 

 surface, as well as in the characters of the root-stock above described. 



12. A. Huacsaro, Ruiz. — Root-stock elongated, clothed with small 

 black scales, and quite enclosed by the splint-like bases of the nume- 

 rous stipites; stipites slender, long-curved at the base, f-1 ft. 1. light 

 or dark brown, channelled, more or less furnished throughout with 

 minute scales ; fronds numerous, linear-ligulate, obtuse at the apex, 

 much tapering at the base, J-fth in. w. f-1 ft. 1., subc jriaceous, more 

 or less furnished with minute scales, chiefly along the rachis and thin 

 slightly reflexed margins beneath, glandulose, very dark, blackish - 

 brown, the underside lighter ; the rachis prominent ; veins obscure, 

 close, simple or forked ; fertile fronds conform, but the stipites usually 

 longer. — A. Calagula, Kl. A. Ruizianum, Moore. 



Common on open banks at 5000 ft. altitude, especially abundant on 

 the sides of the tender, crumbling wayside banks near the Government 

 Cinchona Plantations ; distinguished from the next species by the 

 longer more numerous ligulate fronds, longer stipites, different scales, 

 and peculiar form of the root-stock. The latter though decumbent it 

 not repent, and the fronds spring from all sides of it. It is much 

 elongated, reaching a span or more long, slender and densely clothed 

 with small black scales ; the stipites are very numerous, and run, ap- 

 pressed, parallel to it like splints, completely enclosing, and in the 

 outer part concealing it. 



13. A. tectum, Wild. — Rootstock short-creeping, densely clothed with 

 rather equarrose subulate black glossy scales ; stipites rather slender, 

 close, 4-8 in. 1. meally looking with pale dark-centred appres<^ed scales ; 

 fronds f-lj ft. 1. f-lj in. w , acuminate with a fine point, tapering 

 likewise to the base, coriaceous ; grayish-green, upper surface clothed 

 with deciduous thin gray slightly fimbriate-edged much appressed peltate 

 scales, the under sprinkled over with minute brown stellate ones 

 margins thin and somewhat reflexed, rachis raised beneath and clothed 



