202 FLORA OF SOUTH AMERICA. 
763. M. immersa. Kaulf. En. fil. p. 38. Hook. et Grev. Ic. 
fil. t. 15. British Guiana, Schomburgk. 
764. M. pedalis, Kaulf. En. fil. p. 39. Open Savannahs, 
British Guiana, Schomburgk, n. 1039. 
Tribe ScuizzAcEs. Mart. 
765. Anemia villosa, Humb. Willd. l. c. p. 92. A. flexuosa, 
Sw. Willd. l.c. p. 93. Radd. Bras. fil. t. 13. British Guiana, 
Schomburgk. 
766. Lygodium venustum, Sw. Hydroglossum hastatum et 
H. hirsutum Willd. l. c. p. 79,80. British Guiana, Schom- 
burgk, n. 74. 
767. L. volubile, Sw. Hydroglossum volubile, Willd. l. c. p. 
78. British Guiana, Schomburgk, n. 399. French Guiana, 
Herb. Par. n. 272.—There can be no doubt but that many of 
the forms described as species of this genus are only varia- 
tions of a few species. 
768. Schizea Flabellum, Mart. fil. crypt. 115. t. 55. Lo- 
phidium latifolium Rich. British Guiana, Schomburgk, n. 
443.— Probably this is only an entire form of the following. 
169. S. elegans, Sw. Willd. l. c. p. 88. British Guiana, 
Schomburgk. 
770. S. incurvata, Schk. erypt. p. 138. t. 137. British 
Guiana, Schomburgk, n. 274.—This has been considered by 
some authors to be the same as S. bifida of Willdenow, 
which is from New Holland, and on comparing them I find 
they agree in almost every respect, the chief difference being 
in the fertile appendices of the present species being erect, as 
correctly figured by Schkuhr; whereas in the New Holland 
plant the appendices are reclinate, and contain a greater 
number of sporangiferous receptacles than the present species. 
771. Actinostachys ¢rilateralis, J. Sm. in Journ. of Bot. 5- 
Schizea trilateralis, Schk. crypt. p. 137. t. 136. Hook. d 
Grev. ic. fil. t. 54. Serra Méy, British Guiana, Schomburgk.— 
I am inclined to consider S. penicillata, Humb. to be the same 
as this species, 
ManaTTIACEAE. Kaulf. 
772. Danza simplicifolia, Rudge, plant. Guian. t. 36. Willd. 
