684 FIIICES. 



a. cirrhatum, Kich. Primary segments undivided or pinnatiiid below, dimidiate-truncate 

 ormpwards auricled at the base, l"(-3") long, 3"'(-6"') hrosA.—Haok. Spec.t. 187. A. B. 

 Metten,. Fil. Idps. t. 10. /. 3. 4: passing into ;8. — A. rhizophorum, Sw. Synops. A. Kar- 

 s'tenianum, Kl. {PI. Lechl. 2295). " , ; . 



/3, radicans, Sw. (sec. Moore). Primary segments pinnatipartite-pinnatisect, 3" long, 

 8"'jl2"' broad, secondary undivided, serrulate— K. t. 53./. 3. Hook. Spec. i. 187. C— 

 A. riiizophoruni, Sw. Ob's. CEenopteris rliizophylla, Sw. {ex lo. SI.). 

 y" J. cicutarmm, Sw. (non Metten.). Primary segments pinnatisect, secondary pinnatifid 

 or pinnatipartite at the base: proportions as in ^. — Hook. Spec. f. 187. D.— A. rhachi- 

 rhizon, Radd. {PI. Spruce. 4021). A. flabellulatum, Kee. {PI. MmU) : the homonym 

 in PI. Lechl. 2029, is var. 5. (secondary segments pinnatipartite to the cuneate summit), 

 from which I know not how to distinguish but by short sori A. rutaceum, Metten. {Plum. 

 HI. t. 57 ; Hook. Cent. 3. i. 34). 



Had. Jamaica !, Maef., Pd., Bancr, {a, p, y) ; Trinidad I, Cr.; [Cuba! and Mexico ! to 

 Brazil ! and Peru !]. 



. 310. A, cuneatum^ Zam* ^eaf 2-pinnatisect : primary segments oblong-lanceolate, 

 lowest conform, secondary cnneate-oboTate, dentate above, lower 2-partite-lobed at the base: 

 rhachis devoid of a memiranaceous margin : veins simple, lower forled : petiole pale or 

 browrt ; sori linear, intermediate between the midrib and the base of the teeth.— SI. t. 46. 

 /. 2. Schk. Ciypt. i. 78. dextr. — A. martinicense, W. — ^Ultimate segments 3"'-6"' long, 

 2"'-3"' broad.— Hab. Jumaicn \, Macf. ; S.Vincent!, Guild.; Trinidad!, Cr.; [Cuba ! to 

 Brazil, and other tropical countries to the Cape]. 



211. A. Fadyeni, j?b(7^. Leaf 2-pinnatisect Selow, jnDmAxsect above : primary *^^- 

 nuents oblong-lanceolate or lanceolate, lowest conform, secoudary cnneate-obovate, dentate 

 above, lower 3-partite at the base: rhachis slender : veins simple, lower forked ; sori ob- 

 long, intermediate between the midrib and the base of teeth : indmimri broad. — Hook. Cent, 

 2. t. 27. — Little known, and to be compared with A. rhisophorum, from which it differs by 

 the rhachis not being proliferous j habit of the preceding, but sori short. — Hab. Jamaica !, 



213. A. myriophyllum, ;^re»^. LeafS(-Z)-pi/inatisect! primary segments approxi- 

 "5 mate, divided to the base, lowest much decrescent, ultimate cut into lanceolate or ovate, 

 »>, rounded-pointed loljcs,: rhachis green-margined or winged: veins simple: petiole pale or 



pale-brown ; sori half-elliptical or shortly oblong, entering into the lobes. — Hook. Gen. 

 , if. 6 ; Cent. 3. t. 41. Metten. Fil. Lips. t. 13. /. 3-9.— Csenopteris, Sw. A. cicutarium, 



Sieb. Mart. 360, Hook. !, Metten. {non Sw.). A. monteverdense. Hook. ! A. rhizophyllnm, 



j8, Hook. ! A. dissectum, Lk. — Ultimate lobes 1'" or less long ; sori usually less than 1'" 



long. 



a. Leaf 3-pinnatisect. 



J3. Macraii, Hook. Grev. Leaf 3-pinnatisecl. — Hook. Grev. Ic. t. 193 and 217. A. rhi- 

 zophyllnm, Kze., Hook. a. {exclus. syn. SI. and Sw.) : leaf not proliferous at the summit. 



Hab. Jamaica!, all coll.; Dominica!; Trinidad!, Woodford; [United States; Cuba! 

 and Mexico ! to Brazil I ; Pacific islands I ; trop. Africa ! to the Cape !]. 



213. A, adiantoides, Radd. Leaf Z-pinnatisect : primary and secondary segments 

 distant, petiolulate, ultimate cuneate-rhomboid, lobed and dentate above with rounded- 

 pointed teeth : rhachis slender, devoid of a memliranaceous margin: veins simple: petiole 

 pale or pale-brown ; sori oblong, distant from the midrib, and more so from the point of 

 lobes.— iJffrfrf. Fil. Bras. t. 51. /. 2.— Ultimate segments 4"'-7"' long.— Hab. Jamaica!, 

 Macf. [Brazil!]. 



Sect. 2. DifLAZiUM, Sw. — Inferior or most sori double. 

 * Leaf undivided : veins dichotomous. 



214. A. plantagineum, L. Leaf oblong-lanceolate, pointed, cuneate at the base, 

 serrate above or subenlire : veins costate, dichotomous, terminated near the margin . petiole 



1 slender, pale; sori linear, unequal in length, often alternately distant from the midrib, in- 

 ferior double,— ^oA/c. Crypt, t. 85. sin. Hook. Gen. t. 55. B. f. I. — Diplazium, Sto.— 



