Descriptions of the Species. 
2 t 9 
142. A. hybridum. Frond herbaceous, lanceolate, fringed with scales. 
Fertile frond three inches long, including stipe, club shaped. 
143. A. Aubertii. Frond thinly herbaceous, linear-lanceolate, fringed 
with scales. Fertile frond oblong, on a stipe eight to twelve inches 
long. 
144. A. spathulatum. Frond set with hair-like scales on both surfaces. 
Plant much smaller than the other species. 
§§ Veins free ; barren frond pinnate, fertile frond two-pinnate (Stenochlsena. 
J. Sm). 
145. A. tenuifolium. 
§§§ Veins anastomosing freely, with no main side veins (Chrysodium. Fee). 
146. A. aureum. 
139. Acrostichum conforme. Sw. 
Plate CXXX. Natural size. 
Rhizome creeping, woody, clothed with lanceolate, pointed, 
large, loose, wavy scales. Fronds ligulate, rounded at the apex, 
rounded or tapering to the stipe, four to six inches long, one inch 
broad, thickly coriaceous, quite glabrous on both surfaces, very 
light green ; mid-rib almost white ; the margin entire but undu- 
lated ; the stipe three to six inches long, quite glabrous, nearly 
white. Fertile frond about equal to the barren and similar in 
shape. Sori filling the whole of the under surface except the 
mid-rib and the cartilaginous margin. Veins obscure, once 
forked. 
Very much confusion has existed between this and the next 
two species. My A. viscosum has been repeatedly named 
A. conforme, Sw.; and the two forms of A. viscosum have been 
named A. viscosum and A. conforme. I find A. viscosum a quite 
distinct species, and easily distinguished from this ; but it is with 
great hesitation that I make A. conforme and A. latifolium distinct 
species. Kuhn makes an evident mistake somewhere in making 
them synonymous and including both Kunze’s A. conforme and 
A. angustatum, while he omits A. viscosum from South Africa, 
and thus makes only one species of this group. 
