50 
CATALOGUE OF FEKNS. 
70. HEMID1CTYUM, Fresl. 
(Asplenii sp., Linn.') 
Vernation fasciculate, erect. Fronds pinnate, 10-14 feet long ; 
pinnae 1-2 feet long, 3-5 inches wide. Veins forked; yenules 
parallel till near the margin, then anastomosing and reticulated, 
combined by a transverse, continuous, marginal vein. Sporangia 
produced on the superior side of the parallel veins, constituting 
unilateral, linear sori. Indusium plane. 
1. H. marginatum, Fresl ; Hook. Gen. Fit. t. 55 A. Asple- 
nium marginatum, Linn.; Flum. Fit. t. 106. — Tropical 
America. 
71. CAIjLEFTERIS, Lory; J. Sm. 
(Asplenii et Diplazii sp., Auct. Anisogonium, Fresl. Digram- 
maria, Presl. Microstegia, Fresl.) 
Vernation fasciculate, erect. Fronds pinnate, bipinnatifid, or 
bipinnate, 2-5 feet high. Veins costseform, pinnate ; the whole, 
or the lower venules only, anastomosing, sporangiferous on both 
sides, constituting binate, linear, decussate sori. Indusium plane. 
1. C. prolifer a, Bory. Asplenium proliferum, Lam. Dipla- 
zium proliferum, Kaulf. Asplenium decussatum, Sw. 
Anisogonium decussatum, Presl; Hook. Gen. Fil. t. 
56 A . — East Indies, Malay Archipelago. 
2. O. Malabarica, J. Sm. Diplazium Malabaricum, Spreng. 
Asplenium dubium, Sw. ; Sclik. Fil. t. 75 B ( Hheede , Mai. 
12. t. 15). Digrammaria ambigua, Fresl; Hoolc. Gem 
Fil. t. 56 C. Microstegia ambigua, Fresl, Epim. Bot. 
Diplazium esculentum, Sw. Anisogonium escuientum, 
Presl. Microstegia esculenta, Fresl , Fpim. Bot. Di- 
grammaria esculenta, Fee. Diplazium Seramporense, 
Spreng. Anisogonium Seramporense, Fresl. Callipteris 
Seramporense, Fee. Diplazium pubescens, Link . — East 
Indies, Malayan Archipelago. 
