IJLECHNUM. 47 



base gradually attenuated acuminate falcate rougbish and 

 entire, veins numerous as in the Eapteridcs, sori appressed 

 to the continuous, indusium membranaceous." Metten. — 

 Link, Sp. Fil. p. 78. PresI, Epim. Bot. p. 105. Metten. Fil. 

 Hort. Bot. Lips. p. 63. 



Ilab. Mexico. — I possess no specimen of this plant, and have only seen cul- 

 tivated ones in the herbarium of Mr. J. Smith, which, being from the i5erlin 

 garden, may be considered authentic. The fronds are a foot long, deeply pinna- 

 tilid almost to tlie rachis, the segments invariably opposite, horizontally patent, 

 dilated at the base, and forming a very acute angle in the sinus. It has some 

 affinity with my Bl. Fendlcri, but the segments are quite glabrous and numerous. 

 It may i)ossibly be a more perfect state of Bl. Fendleri. Presl refers to this 

 species the B. polypodioides of Klotzsch in Linna;a, xx. p. 309, in part, and adds 

 tlie habitat of " Rio Janeiro." 



tt Fronds pinnate, rarely simple or undivided. 



8. Bl. Lanceola, Sw. ; caudex short creeping substoloni- 

 ferous, fronds 2-6 inches long lanceolate subattenuate at the 

 base, simple, or sometimes bearing below the base 2-4 small 

 auricles, veins in parallel lines generally twice forked, sori 

 close to the costa, stipites slender 2-4 inches long stramineous 

 slightly paleaceous. — Sw. K. Vetenskaps Acad. Handl. 1817, 

 p. 72. t. 3./. 2. Hook. Bot. Mag. t. 3240. Ic. Plant, t. 970. 

 Kze. in Schkh. Fil. Siippl. p. 126. t.b^.f.l. Bl. lanceolatum, 

 Raddi, Fil. Bras. p. 52. t. 69./. 3. Bl. trifoliatum, Kaulf. En. 

 Fil. J3. 157 {var. subpinnata). 



Ilab. Bogota, about Rio, Raddi, Bellow, Gardner, n. 50 ; J. D. Hooker, 

 M'Gillivrai/ and Milne, Brackenridge. Tarapota, Eastern Peru, on the Campana 

 Mountain, Spruce, n. 4G72. Boqueta, Veraguas, Seemann (small, pinnated, with 

 2-4 small pinmc). — A very neat and elegant, small species, of which the normal 

 state appears to be quite simjjlc ; occasionally there are 2-4 small pinnaj a little 

 below the primary pinna or frond, which then constitutes a large, terminal 

 pinna. 



9. Bl. plantagineum, Pr. (under Mcsothema) ; " fronds 

 simple glabrous minutely cartilagineo-serrulate acute at the 

 base, fertile linear angustato-acute, sterile linear-lanceolate 

 twice as broad as the fertile.^' Pr. — Mesothema plantagi- 

 neum, Pr. Epimel. Bot. p. 111. Blechnum Lanceola, Hort. 

 Cjuorund. [Pr.). 



Ilab. " Brazil {ex Rortulanis)." — "Very much resembling Blechnum Lanceola, 

 but differs in the sori being remote from the costa and running near the middle 

 of the side of the frond for its whole length, except at the base. The fronds, 

 too, are longer, remotely denticulate, the veins fewer." Presl had not seen na- 

 tive specimens. 



10. Bl. intermedium, Link; "frond ovate subsimplc tri- 



