TAB. LXXIII. 
Antrophyum MannianuMj Hook. 
Caudlce brevi repente dense tomentoso-radiculoso, stipitlbus 
approximatis gracilibus complanatis, frondibus amplis 6-8 
uncias longis latisque rhombeo-rotundatis membranaceis 
firmis subpellucidis (slccitate fnsco-olivaceis) caudato-acu- 
minatis subsinuato-serratis basi brevissime attenuatis ecos- 
tatlsj venis conspicuis elevatis ubique anastomosantibiis, 
areolis oblongis, soris superficialibus saspe interruptis vel 
subcontinuis. 
Hab. Epiphytal, on trees, Peak of Fernando Po, at an eleva- 
tion of 3000 feet above the sea level, Gustav Mann, n, 367. 
This is unquestionably the finest species of the beautiful 
Genus Antrophyum yet known to us: and is one of the 
many novelties that rewarded our admirable collector, Mr. 
Gustav Mann, for his late arduous but successful ascent of the 
famous tropical Peak of Fernando Po, whose elevation is 
estimated at 10,700 feet. The nearest affinity of the species 
is, doubtless, with the A. latifolium^ Blume, FI. Jav. p. 75, 
in note, (A. Boryanum, in the text, and on the plate. Tab. 31, 
and of Fee, but not of Kaulfuss, or Hook, et Grev.) : but it 
is truly distinct; Blume’s plant being much smaller, of a 
carnoso-coriaceous, very firm texture, quite opaque when dry, 
with sunken veins ; its colour, when dry, pale yellowish green, 
so that the copious brown sori which occupy the disk (not 
extending to the margin) are exceedingly conspicuous on the 
pale coloured frond : the base is gradually attenuated into 
the shorter and broader stipites. — In our plant the dry dark- 
colored frond is so membranaceous and pellucid that the 
minutely cellular texture is distinctly seen with a magnify- 
ing lens of small power, and the venation is very conspi- 
cuous, slender, firm, and as it were prominent (not sunk). 
Tab. LXXIII. Plant of Antrophyum Mannianum^ Hook., 
fertile; nat size. Fig. 1. Portion of a fertile frond, with sori ; 
magnified. 
Cent. 2. t. 73. 
