232 CHARACTERS OF TRIBES AND GENERA. : 
a stituting linear simple sori, analogous to Grammitis, to ` 
_ which the species have been referred by some authors, but 
their entirely distinct habit shows that they possess no 
direct affinity with Grammitis, as here defined. They have 
also been referred to Gymnogramma, under which genus 
they stand in the “Species Filicum.” 
~. The genus consists of about ten known species, of which 
. six are natives of the West Indies and Tropical America, 
the other four being natives of Tropical Africa, India, Java, 
and Japan, L. totta having a very wide range, being found 
in the Azores, Madeira, Western and South Africa, Ceylon, 
Kast Indies, Java, China, and Japan. 
Sp. L. asplenioides (Sw.) (v v.) ; L. totta (Willd.) (v v.) 
(Gymnogramma, Lowei, Hook. and Grev., t. 89); L. Linkiana 
(Kze.) (v v.) ; L. rupestris (Kze.) (v v.) ; L. villosa (Link.) 
(v v.); L. polypodioides (Raddi) (v v.); L. gracilis (Hew.) 
(v v.); L. subsimilis (Hook.) ; L. decurrenti-alata (Hook.) ; 
` E. obtusata (Blume). 
123,—Puxcopreris, Fée. (1851). 
Polypodium sp., auct. ; Hook. Sp. Fil. 
Vernation uniserial and sarmentose, or fasciculate decum- 
bent, or erect, acaulose or subarboroid. Fronds varying 
from pinnate to deltoid decompound multifid, and from 
lto 6 feet high. Veins forked or pinnate ; venules free. 
Receptacles punctiform, terminal, lateral or basal. Sort 
: .. round, rarely oblong, naked, 
| 7 Type. Polypodium decussatum, Linn. 
Ilust. Moore Ind. Fil, p. 56 A., fig. 5; J. Sm. Ferns ` 
Brit. and For, fig. 84; Hook. Syn. Fil, t. 5, fig. 
- 48, c. d. ub 
Oss.—This genus consists of 50 or more species widely - 
