Frequent in woods, and half open and grassy situations, and in hedges, among tho lower hills up 

 1,200 or 1,500 ft. alt. A large robust plant, which only differs from tetraphyllum by its continuous 

 sori and rather firmer texture. The variety, which is marked by the marginal undulations is some- 

 what thinner in substanco, and is less frequent. 



7. A. pulverulentum Linn. — Stipes, strong, 1-2 ft. 1. channelled, polished, blackish, deciduously 

 rusty-scurfy, arising from a shortly creeping scaly rootstock; fronds bipinnate, subcoriaceous, bright 

 green on doth sides, the upper glossy, 1-1£ ft. 1. and nearly as w. glabrous, except the rachis and costae 

 which are rusty-pubescent ; pinna) spreading, 6-8 in. 1. about 1 in. w., 4-8 to a side, with a similar ter- 

 minal one; segments very numerous, close dimidiate, subfalcate or straight, £-1 in. 1. 2-2| li. w. the 

 under margin usually upcurved and denticulate at the end ; veins free, close, repeatedly forked ; sori 

 continuous, extending partly or wholly along the upper margin. — Plum. t. 55. 



Var. cattdatum, Jenm. — Fronds nearly twice as long as wide, terminal pinnae nearly twice as large 

 as the lateral, the upper of which are the largest, those below being gradually shortened ; segments 

 subfalcate ; sori not reaching the end. — A. snmdatiun, Linn. Sloane t. 35, fig. 6. 



Very plentiful in woods and forests throughout the country up to 1,000 or 1,500 ft. alt. When 

 the segments are falcate, the sori fall short of the end, when they are straight it reaches the end and 

 often extends quite round the trumcato or decurved outer margin. It appears to be uniformly bipin- 

 nate in Jamaica, but in Guiana it is frequently tripinnate, the lower pinnao being shortly branched at 

 the base. The variety is found on wet rocks near springs, and is common in the eastern parishes. It 

 is well marked by the large terminal pinna and short lateral ones, while in the type the lateral pinna) 

 are as long as the terminal. 



8. A. Ka it If u ssii, Kze. — Rootstock strong, short creeping, fibrillose ; stipes 4-10 in. 1. slender, 

 channelled, polished, black, quite naked eventually ; fronds pinnate, 6-10 in. L 3-5 in. w. base trun- 

 cate, dark glossy green above, bright glaucous beneath, thin, naked or the slender rachis slightly 

 ciliate ; pinna) composed of 4-8 pair and a similar terminal one, alternate, close or subdistant, 2-3 in. 1. 

 f-lj in. w. subequilateral, the inferior base cut away, the superior rounded and generally somewhat 

 expunded auricle-like, the apex acuminate : veins free, fine, close, very oblique, repeatedly forked ; sori 

 intermittent, extending from the base along both margins but not reaching the finely serrated apex. — 

 Hook, and Grev. Icon. Fil. t. 190. 



Frequent in moist woods and forests bordering streams and rivers at low altitudes. The sori are 

 close or a little apart, the margin often slightly Botched between, and form shallow curves, extending 

 partly at least around the basal auricle which overlaps the rachis. The relatively large pinnae, bright 

 glaucous underside, and uniformly simply pinnate habit well mark it from its allies. 



9. A. obliqmen, Willd. — Rootstock short-creeping, \ in. thick, fibrillose, stipes 6-10 in. 1. de- 

 ciduously furfuraceous, dark, polished, channelled ; fronds simply pinnate or with a single or pair of 

 short and usually unequal pinnate branches at the base, firm, dark green on both sides, the upper 

 with a satin-like gloss, naked except the rachis which is rusty furfuraceous; segments 1^-2 in. 1. |-f 

 in. w. about 8-12 to a 'side, subequilateral, the inferior base cut away obliquely, the superior expanded 

 and rounded, barren finely denticulate : veins free, close, forked, oblique; sori interrupted, close, ex- 

 tending along both margins from the base to the acuminate or blunt point. — Hook. Sp. Fil. vol. 2. t. 

 79. A. Plum. t. 52. A. dentieulatum, Swartz. 



Frequent in forests and shady places near streams and rivers at low elevations in the eastern 

 parishes. Marked by its simply pinnate, or sparsely branched, habit, dark green colour on both sides 

 and satiny gloss above. Swartz's name, quoted above, is the oldest, but the species is best known 

 under Willdenow's. The plant of the same dark green colour on both sides, with more uniformly bi- 

 pinnate fronds, the lateral pinnae as long as the terminal and a branching wide-creeping cord-like 

 rootstock is A.fovearum, Radd. which is common from Trinidad to Brazil but which appears not to 

 extent further north. This last agrees exactly with intermedium except in the absence of the glaucous 

 colour beneath. 



10. A. intermedium, Swartz. — Rootstock thick as cord, free- creeping, densely scaly, stipes scat- 

 tered, ft. 1. deciduously rusty-furfui aceous, as are also the rachis antl costae, dark polished, chan- 

 nelled ; fronds bipinnate, subcoriaceous, green above, glaucous beneath, composed of a long terminal 

 pinna and 1-2 pair of similar horizontally spreading lateral ones, which are 5-8 in. 1. 2-2^ in. b., seg- 

 ments numerous, 1-1 \ in. 1. in. b. blunt or acute, naked, subequilateral, the inferior base more or 

 less freely cut away in a curved or straight line, the superior fully developed and rounded, barren 

 margins denticulate; veins free, very oblique, repeatedly forked ; sori interrupted, close, extending 

 fully along the upper, and down the under margin to the point where it is cut away. 



Very abundant, chiefly in grassy half shaded situations at low elevations ; probably the com- 

 monest species of all. Distinguished from its allies by its equally and uniformly branched habit, 

 glaucous under surface, and free-creeping rootstock. Fully developed plants have two pinnae on each 

 side of the fronds, but in an early stage they are fewer, one, or two on one side and one on the other. 



11. A. triangulatum, Hook., Griseb (non Kaulf). — Rootstock short-creeping, scaly; stipes 1-1£ 

 ft. 1. deciduously rusty-scurfy, black, polished, channelled, angular; fronds bipinnate, 9-10 in. 1. and 

 as much w., firm, dark glossy green above, light green beneath, glabrous except the rachis and costae 

 which are rusty scurfy ; pinnae 2-4 to a side with a similar or rather larger terminal one, contiguous, 

 often upcurved, 6-8 in. 1. 1^-1^ in. w. segments numerous, close, dimidiate, oblong or linear-oblong, 

 f-1 in. 1. 2-3 li. w. blunt and rounded at the outer end, the upper and lower margins nearly parallel, 

 but the latter slightly decurved at the base, inferior ones much rednced, the terminal linear, attenuated, 

 sterile denticulate : veins free, repeatedly forked, fine, close ; sori a li. or less 1. contiguous, extending 

 along the upper margin and usually round the blunt end. — Grisebach's Flora, p. 664. 



Var. acuminatum. — Segments longer, upcurved or subfalcate, acuminate or acute, the end usually 

 barren and inciso dentate. 



