8 



aaaaa. Fronds bi-tripinnate, rarely simply pinnate, leaflets dimidiate, sori interrupted (rarely entire) 

 along the upper and generally round the outer margin. 



16. A. pumilam, Swartz. 



17. A. nigrescent, Fee. ( „ • 



18. 4. striatum, Swartz.. 



19. A. cristatum, Linn. 



20. A. pyramidale, Willd. 

 . -t • . ^2x.4't n hrendtum, willd. 



22. A. melanoleucum, Willd. 



aaaaaa. Fronds decompound, rachises slender, polished leaflets on filiform padicels, variously 

 shaped, sori in patches (polysorus). 

 b. Leaflets dimidiate. 



23. A. cultratum, J. Smith. 



24. A. trapeziforme, Linn. 



bb. Leaflets more or less cuneate- flabellate. 



25. A. tenerum, Swartz. 

 36. A. emarginatum, Bory. 



27. A. fragile, Swartz. 



28. A. concinnum H. B. K. 

 (See also A. jamaicense.) 



- 1. A. dtltoideum, Swartz. Stipites numerous, l£-4 in. 1. castaneous, arising from a rather stout- 

 ish elongated fibrilose rootstock ; fronds 3-7 in. 1. \ - 1 in. w. simply pinnate or with one to several 

 very short pinnate branches at the base, firm, naked or the slender rach is slightly ciliate ; leaflets 

 deltoid, terminal usually larger, upper approximate, lower subdistant, 2£-6 li. w. and d. articulate at 

 the apex of the short filiform pedical, underside pale, upper dark green ; sori continuous (rarely inter- 

 rupted) along both margins and usually round the slight basal auricles ; veins free, flabellate, repeatedly 

 forked, fine, close. . 



Var. A. Jamaicense, Fe"e. — Stipites and rachises rather flexuose, fronds 6 in. or over, 1. L-l$ in. w. , 

 leaflets fewer, larger, |-| in. each way, sub-deltoid, rather rounded ; sori interrupted, in patches around 

 the margin. — Fee Fil. Ant. t. 33, f. 3. '*.'.' 



Abundant on the rocky north coast, and in stone walls, often within wash ot the sea spray, 

 gathered at St. Ann's Bay, Ocho Rios, Port Antonio, St. Thomas and elsewhere. A very distinct 

 species, with no close ally. The margins of the triangular little leaflets are straight and the angles acute. 

 In the var. A. jamaicense the stipes and rachises are more or less flexuose, pinnae much fewer, larger, 

 and rounded, the larger occasionally incised, and the sori uniformly in short patches. I have seen a 

 fasciated form of the type gathered by Miss Harding. # _ , . , „ , u , 



2 A lu cidum. Swartz.— Rootstock rajher stout- .sWilv ro^t • itmda* wiMti**«i. *_tn i ± rr. 

 ^xv/o^jL-^tuy't/'ai'i'^ii ^/Uiiua oubrier, nuaiiy naKed, polished, very dark ; fronds f — 1$ ft. 1. 3 — 6 m. w. 



with a terminal pinna and several or many spreading lateral ones, rarely bipinnate at the base, dark 

 glossy green, paler beneath, firm in texture, rachis rusty-ciliate ; pinna? shortly stipitate, lanceolate- 

 acuminate, subequal sided, obliquely truncate, or the upper side rounded at the base, 2 — 4 in. 1. ^ — §■ 

 in. w. those of the barren fronds larger and finely serrate ; veins very oblique, fine, close, forked, 

 casually uniting ; sori continuous, along both margins, falling a little short of the faintly serrate 

 point.— Hook. Sp. Fil. vol. 2. t. 79. c. 



Infrequent, gathered by Masson, (locality not recorded) whose specimens are at Kew and in the 

 British Museum, at the Cascade, St. George, Portland, by Miss Taylor, whose specimens I possess, 

 and, I understand, in the neighbourhood of Mt. Moses a few years ago by Syme. The fronds are sepa- 

 rately barren and fertile, the latter being erect, 2-3 ft. high, considerably overtopping the former. 



3. A. Wilsoni, Hookr. — Rootstock creeping, \-\ in. thick ; stipites a span to \\ ft. 1. dark, polished ; 

 fronds composed of a terminal equilateral pinna, 3-5 in. 1. and 1^-2 in. w. lanceolate or ovate-lan- 

 ceolate, acuminate, and 1-2 pair of similar, spreading, lateral ones, which are petiolate and broadly 

 rounded at the base, naked, glossy, firm ; midrib evident at the base beneath, beyond which it is evane- 

 scent; veins fine, close, oblique, twice or thrice forked, casually uniting; sori continuous along both 

 margins, falling short of the serrated apex — Hook. Sp. Fil. vol. 2. t. 72. A. 



Plentiful in very damp situations in forests near rivers among the lower hills of the eastern 

 Parishes ; gathered abundantly on the banks of Ugly River, St Mary. The lateral pinnaa are usually 

 somewhat subcordate at the base, being deeper on the lower sido. It is closely allied to the mainland 

 A. dolosnm, Kze., which has narrower and more numerous pinna). 



4. A. macrophyllum, Swartz. — Stipites a span to \\ ft. 1. dark, polished, tufted on a rather stout, 

 short, fasciculate, finely scaly rootstock; fronds f-lj ft. 1. 5-9 in. w. naked, glossy, passing from a 

 delicate pink to green, composed of a terminal pinna and 4-8 pair of opposite or alternate similar lateral 

 ones, which are subovate or lanceolate, 2-4 in. 1. 1-2 in. b. acute or more tdpering and acuminate, sessile 

 or shortly stipitate, the base broadest and truncate or oblique ou the lower side, the basal 1-2 pair 

 casually expanded and auricled or subsagiftate, margins entire, serrate, or inciso-lobate, no distinst 

 midrib, or none evident beyond the base beneath ; veins fine, close, repeatedly forked, free, flabellate ; 

 sori continuous along both margins, falling little or much short of the apex. — Hook. Icon. t. 132. 



Common in woodland and forests among the lower hills of the eastern, and extending less abund- 

 antly to the central and western parishes, reaching 1,200 or 1,500 ft. alt. A well-known and very dis- 

 tinct species. The young fronds are of a baautiful red dish-pink tinge, turning green eventually. There 

 ure two distinct forms: tho first with relatively short, wedge-shaped pinu:c, with the margins beyond 

 the sori entire and even ; the second with longer more acuminate pinua>, which are inciso-lobate beyond 

 the fertile sides. It was first collected by James Harlow, from whom Sloane's specimen in his her- 

 barium, p. 76, mounted with A. Kaulfussi, Kze. was obtained. 



