CHARACTERS OF TRIBES AND GENERA. - 217 
3** Sarmentum epigeous, squamose, 
L. invisa (Sw.) (v v.); L. Serra (Sw.); L. augescens 
(Link.) (v v.). 
Fronds deltoid decompound. | Polystichopsis, J. Sm. 
L. hispida (Sw.) (v v.); L. pubescens (Sw.) (v v.); L 
decomposita (R. Br.) (v v.); L. quinquangularis (Kze.) 
(v ei: L. recedens (J. Sm.) (v v.); L. elegans (J. Sm.) 
(v v.). 
Oss.—Sir William Hooker unites this with L. recedens, 
but the two are quite distinct as is shown by cultivated 
plants. 
L. sub-quinquefida (Beauv.) (v v.); L. variabile (Hook.) 
(v v.); L. funesta (Kze.) (v v.) ; L. velutina (A. Rich.) 
(v v.); L. pilosissima (J. $m.) (G. Don in Hort.) (v v.). 
112.—Potysticuum, Schott. (1834). 
Aspidium sp., Hook. Sp. Fil. 
Vernation fasciculate and erect, generally csespitose or 
uniserial and sub.sarmentose. Fronds pinnate, bi-tri- 
pinnate or decompound, pinne and pinnules auriculated 
and lobed, dentate, rigid, spinulose, mucronate. Veins 
simply or pinnately forked ; venules free, the lower exterior 
branch or more (of each fascicle) soriferous on, or generally 
below its apex. Receptacles punctiform. Sort round, 
Indusium orbicular or sub-reniform. 
Type. Aspidium aculeatum, Swartz. 
` Ilust. Hook. and Bauer Gen. Fil, t. 48, C. ; Hook. Fil. 
Exot., t. 83; Schott. Gen. Fil, t. 9; Sours Ind. Fil., 
p. 67, B.; J. Sm. Ferns Brit. and For., fig. 74; I 
Hook. Syn. Fil., t. 5, fig. 43, a. b. 
Hop ta Se and fifty species are described as 
