214 LINDS^A. 



here figured. The pinnules are small, uniform, invariably pendant, not 

 only on the nearly horizontal pinnae, but upon the erect terminal one, and 

 though distichous in insertion they all point to one side so as to be 

 secund. 



35. L. quadratujularis, Rad. ; stipes 4-sided, frond bi- 

 pinnate, pinnae linear-lanceolate elongated attenuated rather 

 slender, pinnules half-ovate subtrapeziforni obtuse, superior 

 base truncated occasionally subauriculated, gradually smaller 

 towards the apices of the pinnas, superior margin straight ero- 

 so-dentate, sori within the margin continuous or interrupted. 

 —Radcli, Fil. Bras. p. 55, t. 74. 



&. rather larger, sori more interrupted. L. trapeziforrais, 



Lancjsd. et Fisch . Fil. p. 21, t. 24. L. pallida, ^A in 



Linncea, 1844, p. 547. 



Hab. Rio Janeiro, i?rtfW» (Herb, nostr.) Brazil, 3Tr. Gardner, n. 158, 



1225, 2987.— ^. British Guiana, R. Schomburffk (Klotzsch), n. 1205. St. 



Catharine, Brazil, Lnngsdnrff ; Allan Cunningham. Columbia, Linden. 



Venezuela, Aldridf/e. Dominica, Dr. Imrarj. — A variable plant, of which 



the j8. seems to be the most common form and the one nearest to L. tra- 



peziformis. 



36. L. Itorizontalis, Hook. ; stipes upwards 4-sided, frond 

 bipinnate, pinnae broad-lanceolate acuminate, pinnules ap- 

 proximate horizontal half-ovate narrow elongated straight 

 rather acute gradually smaller towards the apex of the pinnae, 

 superior base truncate, superior margin quite entire, sori a 

 little within the margin continuous. (Tab. LXII. B.) 



Hab. Dry woods, Orfian Mountains, Crtn/zifr, m. 157. Pangea, Peru, 

 Matheics. — Resembles L. quadrangular is, but the pinnae are much broader, 

 the pinnules are almost exactly horizontal, larger indeed, but longer and 

 narrower in proportion, more acute, the superior margin quite entire, sori 

 always continuous. 



37. L. irapeziformh. Dry. ; stipes 4-sided, frond bipinnate 

 (pinnate when young), pinnae broad-lanceolate rather obtuse, 

 pinnules membranaceous close half-ovate lunulato-falcate 

 (decurved) superior base truncate upper margin forming al- 

 most the segment of a circle quite entire, terminal pinnule 

 rather large subrhomboidal-triangular, sorus within the mar- 

 gin continuous and extending to the apex. — Dry. in Linn. 

 Trans, v. iii. p. 42, t. 9. Siv. Syn. Fil. p. 119. Willd. Sp. 

 PL V. p. 424. Hook. Gen. FiL t. 63, A. 



/3, larger, pinna more falcate. L. nitidissima, Willd. Sp. 

 PL V. p. 423. L. decomposita, JVilld. Sp. PL v. p. 

 425. WalL Cat. n. 153. L. falcata (j/oiaig slate), and 

 Ti. Schomburgkii, Klotzsch, in Linn., 1844, p. 545. Dry. 



