sea filices. 



** Leaf decompound- pinnatisect : segments supported by slender petwlules. 



102. A. trapeziforme, L. Leaf 3-(4-2)-pinnatisect : segments herbaceous, glauces- 

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

 pointed -. angles sharp : petiole shining-ebeneous, glabrous ; sori 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 1^"-1", petiolules 4 - 

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



103. A. cultratum, J. Sm. I Leaf 3-(4-2)-pinnatisect : segments herbaceous, glauces- 

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

 the apex, blunt : angles (except the basilar) obtuse : petiole shining-ebeneous, glabrous ; 

 son semilunar-reniform, occupying the middle part of the emarginate lobes. — Plum. Til- t. 

 95. Schk. Crypt, t. 121. b.— A. trapeziforme, Schk.— 2,' high; segments 12"'-8'", petio- 

 lules H'"-l'" Ioug.— Hab. Jamaica {Schk.) ; S. Vincent {Hook.); [Brazil!]. 



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 

 base: 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, glaucescent form, with 

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

 ments 10"'-4"' diam., petiolules 2£"'-l'" long.— Hab. Jamaica, Dominica and Trinidad 

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

 China, East Indies! and the Cape !]. 



105. A. tenerum, Sw. Leaf 3-4-pinnate : segments membranaceous, usually glauces- 

 cent, obliquely rhomboid, bluntish, inciso-lobulate or lobed at the two upper fertile margins, 

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

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

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

 Segments 6"'-10'", petiolules 2V"-1'" long.— Hab. Bahamas !, Swains. ; Jamaica!, Wiles, 

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

 Mexico ! to Venezuela !]. 



106. A. fragile, Sw. Z^o/*3-4-pinnate, divided from near the base : segments mem- 

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

 terminal, fertile margin, jointed at the base of the blade : petiole shining-ebeneous, glabrous ; 

 sori oblong-half-round, occupying the middle part of the broadly emarginate lobes. — 1 -If 

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

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



107. A. concbnum, Kth. Leaf 3-2-pinnatisect : segments membranaceous, obliquely 

 rhomboid or rhomboid-roundish, lowest secondary and tertiary ones approximate and ap~ 

 pressed to the rhachis, subequal-sided, deltoid-roundish, 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 lobes. — Kth. N. Gen. 7. t. 668. — 1 -* 

 high ; segments 4"'-8'"(-9'"), petiolules 2"'-V>' long.— Hab. Jamaica !, Macf. ; S. Vincent ; 

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



15. HYPOLEPIS, Bernh. 



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

 summit, covered byreflexed, specially transformed appendages of the margin. — Stout Penis; 

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

 usually in the sinuosities of the ultimate segments. 



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

 obloug-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 

 oblong, herbaceous.— Plum. Pit. t. 12. Hook. Spec. t. 90. B. Lonchitis, L. Cheilan- 

 thes, Kaulf, Sieb. Mart. 373 (Dicksonia aculeata, Spreng .) .— 6'-4' high; distant primary 

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



