665 FILICES. 



** Leaf decompound-pinnatisect : segrnents supported by slender petiolul'es. 



/ 102. A. trapeziforme, L. Leaf 3-(4-2)-pmnatisect : segments terlaceoas, glauces- 

 cent, dimidiate-trapezoid or rhomboid, inciso-lobulate at the two upper, fertile margins, 

 pointed : angles sharp : petiole shioing-ebeueous, glabrous ; sort shortly/ oblong-half-round, 



' occupying the middle part of the truncate, entire lobes. — SI. t. 59. Schk. Crypt, t. 122. — 

 A. rhomboideum, Schk. A. formosissimum, Kl. — 4' high ; segments 14"-1", petiolules 4'"- 

 1'" long. — Hab. Jamaica !, Wiles, Pd. ; [Cuba ! and Mexico I to Brazil !]. 



103. A. cultratum, /. Sm. t Leaf 3-(4-2)-pinnatisect : segmentsherhafxaxis, glauces- 

 cent, dimidiate-rhomboid or oblong, inciso-lobulate at the upper fertile margin and round 

 the a]>&z, blunt : angles (except the basilar) obtuse: petiole shining-ebeneous, glabrous; 

 sori semilunar-reniform, occupying the middle part of the emarginate lobes. — Plum. Ml. t. 

 95. Schk. Crypt, f. 121. b.—k. trai)eziforme, Schk.— 2' highj segments 12"'-8"', petio- 

 lules li"'-l"' loug.— Hab. Jamaica (Schk.) ; S. Vincent (Hook.) ; [Brazil 1]. 



104. A. Capillus- Veneris, L. Leaf 2-4-pinnatisect : segments membranaceous, 

 cuneate-roundish or obliquely rhomboid, inciso-lobulate or lobed above, not jointed at the 

 hose : petiole slender, glabrous ; sori half-round or oblong, occupying the middle part or en- 

 tire breadth of the lobes. — Hook. Spec. t. 74. B : our West Indian, glancescent form, with 



• deeply cut, rhomboid segments and 6-8 sori (A., iacisam. Parti, ms.). — 1'-2' high; seg- 

 £ ments 10"'-4"' diam., petiolules 24"'-l"' long. — Hab. Jamaica, Dominica and Trinidad 



{Hook.) ; [Cuba ! ; Mexico !, United States I, Pacific islands ! ; south and west of Europe ! ; to 



China, East Indies ! and the Cape !]. 



105. A. tenerum, Su). Leaf 3-4-pinnate ; segments membranaceous, usually glauces- 

 cent, obliquely rhomboid, bluntish, inciso-lobulate or lolled at the two upper fertile niargins, 

 jointed at the base of the blade: petiole slender, shining-ebeneous, glabrous; sori oblon"- 

 half-round, occupying the middle part (rarely the entire breadth) of the lobes. — Not distin- 

 guished from the preceding Cuba form, but by the excellent character of jointed segments. — 

 Segments 6"'-10"', petiolules 24"'-l"' long.— Hab. Bahamas !, Swains.; Jamaica!, Wiles, 

 Pd. ;. Antigua !, Nichols., Dominica I, Imr., S. Vincent ; [Cuba ! to French islands ! 

 Mexico I to Venezuela .']. 



106. A. fragile, Sw. i«a/'3-4-pinnate, divided from near the base ; segments mem- 

 branaceous, subequal-sided or slightly oblique, cuneate-roundish, dentate-lobulatc at the 

 terminal, fertile mw^xii., jointed at the base of the blade : petiole shining-ebeneous, glabrous ; 

 sori oblong-half-round, occupying the middle part of the broadly emarginate lobes.— I'-IJ' 

 high; segments 4"'-2"'(-6"') diam. ; petiolules 2"'-l"' long.— Hab. Jamaica!, Wright, Pd., 

 Wils., on calcareous rocks : [Cuba ! to Martinique 1]. 



'y^ 107. A. conciunuin, Kth. Leaf 3-2-pinnatisect : «e^»jra<j membranaceous, obliquely 

 rhomboid or rhomboid-roundish, lowest secondary and tertiary ones approidmate and op- 

 pressed to the rhachis, subequal-dded, deltoid-rouudish, all lobulate at the two upper fertile 

 margins, not jointed at the base: petiole shining, glabrous ; sori semilunar-reniform, oc- 

 cupying the middle part of the broadly emarginate \o\>e&.—Kth. N. Gen 7 t 668 — 1'-2' 

 high; segments 4"'-8"'(-9"'), petiolnles 2"'-l''' long.— Hab. Jamaica!, Maef.; S.Vincent; 

 [Cuba I and Mexico ! to Peru ! ; Galapagos]. 



15. HYPOLEPIS, Bemh. 



« 



&n round, marginal, confined to the lower anterior, free veintets, inserted near their 

 summit, covered byreflexed, specially transformed appendages of the margin.— Stout Ferns • 

 rhizome often creeping out of the ground; leaves much divided: all veinlets free: sori 

 usually in the sinuosities of the ultimate segments. 



108. H. repens, Pr. Prickly, glabrescent; leaf S-pinnatisect : tertiary segments 

 obJong-lanceolate, upward decrescent, lower pinnatipartite, superior pinnatifid and serrate 

 uppermost and ultimate ones subentire : lobes and serratures approximate obliquely 

 rounded : sori single(-2) at the base of their anterior margin : involucre small, transversely 

 oblon|^ herbaceous -P&™ m J. 12. Hook. Spec. t. W. B. Lonchitis. i. CheUan- 

 thes, Eaulf Sieb. Mart.^ 373 (Dicksoma aculeata, Spreng^.—^'-il high; distant primary 

 segments 2'. secondary 6"-3", lower tertiary 8"'-10"' long, ultimate. 1'" broad, lowest 



