123 
FERNS : BRITISH AND FOREIGN. 
1-2^ feet long, smooth, contracted and fertile above, sterile 
below; Sterile pinnules oblong, ellijotical, oblique sub-cordate, 
serrulate, 1-1" inches in length. Veins forked ; venules free. 
Fertile pinnules linear, 2—3 inches long, revolute, margin con- 
niving and forming an universal indusium. Sporangia occu- 
pying nearly the whole length of the contracted venules, 
forming linear forked confluent sori. 
1. L. cordifolia, Lag. ; Hook. Bot. Mag. t. 5159. Cerato- 
dactylis osmundioides, J. Sm. in Hook, et Bauer, Gen. 
Fil. t. 36 ; Loire's New Ferns, t. 30. Botryogramma 
Karwinskii, Fee, Gen. Fil. t. 15 C. Allosorus Kar- 
winskii, Kunze, Fil. t. 4 ; Hook. Ic. PI. t. 387-8. — 
Mexico. Tr. 
** Veins anastomosing. 
§ 3. ncmionitece. Fronds simple, pinnate or rarely L pinnate. 
Sori more or less complete reticulated. 
Genus 53 —Portion o( 
fertile frond. No. 1. 
53. DICTYOGRAMMA, Fee. 
Vernation uniserial, contiguous ; sar- 
mentum short. Fronds pinnate or bipinnate, 
1-3 feet high, smooth; pinnae elliptical- 
lanceolate, 6-10 inches long. Venation sub- 
uniform, reticulated; areoles unequal, gene- 
rally elongated, oblique. Receptacles super- 
ficial. Son linear, reticulated, naked. 
1. D. Japonica, Fee, Gen. Fil. t. 15 A. 
Hemionitis Japonica, Thunb. Gym- 
nogramma Japonica, Hook. Sp. Fil . — 
Japan, Formosa. 
54. HEMIONITIS, Linn. 
Vernation fasciculate, erect, short. Fronds simple, cordate, 
palmate orpinnate, smooth or villose. Veins uniform reticulated. 
