482 BLECHNUM. 



denticulate, slightly falcate, dilated at base, central |-f in. L, 2-2i lin. br. at 

 middle, lower gradually reduced to mere auricles, its St. I in. or less, nearly 

 black ; texture subcoriaceous ; surfaces naked, dull-green ; veins fine, distinct, 

 forked ; fertile fr. as large, with distant linear acute falcate pinnae and a much 

 longer st. 



Hab. Chiapas, South Mexico, Ohcisbreght, 207. 



20*. L. andina, Baker ; rhizome filiform, wide-creeping ; st. tufted or solitary, 

 ^-1 in., naked, very slender ; basal scales brown, lanceolate, membranous ; sterile 

 fr. oblanceolate, l-2 in. 1., 3-4 lin. br. ; pinnae close, adnate, 15-20-jugate, 

 oblong, unequal-sided, blunt, repand, ^ in. br., cuneate-truncate on lower side 

 at base, lowest round-cuneate ; texture firm-membranous ; surfaces naked, dark- 

 green ; veins distant, distinct, 3-4-jugate, only lowest anterior forked ; fertile fr. 

 narrower, with spaced pinnae 1-1| lin. 1. 



Hab. Andes, Unduari, 10,000 ft., Pearce. 



35*. L. (Flag.) costaricensis, Baker ; sterile fr. oblong, above 1 ft. 1., 6-7 in. br., 

 abruptly narrowed at base ; pinnce adnate, under J in. br., entire, subfalcate, 

 bluntish, confluent at base in a narrow wing, all except lowest close, the 

 edge revolute ; veins lax, forked, sometimes joined in costal arches ; fertile 

 fr. lft. 1., Jft. br., with lax pinnse. Plagiogyria costaricensis, Mett. Kuhn, 

 Linn. 36. p. 149. 



Hab. Costarica, Wendland, 1066. Differs mainly from biserrata by its entire pinnse. 



XXXIV. BLECHNUM. Page 183-186. 



5*. B. vittatum, Brack. ; st. of sterile fr. 5-6 in., clothed below with nbrillose 

 scales ; sterile fr. oblanceolate-oblong, 1 ft. L, 4 in. br. ; pinnce linear, under 

 j in. br., upper close, adnate to rachis by a slightly dilated base, lower lax, rather 

 reduced ; texture firm-membranous ; surfaces naked ; veins fine, close ; fertile fr. 

 rather larger, with spaced narrow pinnse, upper much dilated at base. Fil, 

 Amer. Expl. Exped.p. 131. t. 16. 



Hab. Viti, Brackenridge. 



XXXVII. DOODIA. Page 189190. 



4. Beside connexa the following vars. may be distinguished : 1. Kunthiana, 

 Gaud. Bot. Frey. t. 14, Sandwich Isles ; fr. moderately firm ; central pinnce 

 close, 1-ftJ in. 1., bluntish, sharply-toothed ; sori 1-serial. 2. Brackenridgei, Carr. 

 Fl. Vit. 352, Viti ; texture firm ; pinnce fewer and more distant, central 2-2J 

 in. 1., in. br., bluntish ; sori dense, irregularly 2-serial. 3. Milnei, Carr. Fl. 

 Vit. p. 352, Kermadec Isles ; rachis black ; fr. firm-membranous, dark -green ; 

 pinna; close, sharply-toothed, central 4-5 in. 1., 3-4 lin. br., acuminate. 4. durius- 

 cula, Moore, Gard. Chron. 1868, p. 114, New Caledonia; fr. firm, caudate; 

 central pinnce |-f in. L, oblong, obtuse; sori 1-serial, 6-10-jugate. 5. Moorci, 

 Baker, N. S. Wales, C. Moore ; fr. flexible ; rachis black ; central piunw 3 hi. 1., 

 l-2 lin. br., very acuminate, sharply-toothed ; sori 1-serial. 



XXXVIIL ASPLENIUM. 



6*. A. rcpandum, Mett. ; rhizome short-creeping ; scales lanceolate like those 

 of Vittaria; st. 3-6 in., greenish, slightly scaly; fr. ligulate-lanceolate, 6-12 

 in. 1., 12-14 lin. br., acute, repand, narrowed below very gradually ; texture, 



