154 CHARACTERS OF TRIRES AND GENERA. 
Grevelle, t. 62. In some Fijian specimens the sori are 
scattered over the disk, being round or oval, and compital 
on the anastomoses of the veins, which may be considered 
an abnormal condition consequent on local influences. 
Sp. T. blechnoides, Sw. (T. pteroides, Schk. Fil., t. 6, B); 
T. obtusa, Hook. Ic. Pl. t. 994, 
Ons.—This is described as having fronds only 13 to 2 
inches long, and is probably only a young state of T. blech- 
noides. They are natives of Borneo, Malay, Philippine and 
Fiji islands. 
68.—Antropuyum, Kaulf. (1824). 
Hook. Sp. Fil.; Hemionitis sp., Linn. and auct. ; 
Polytenium, Desv. 
Vernation uniserial, sarmentum, short, squamose. Fronds 
contiguous cewspitose, simple, linear-lanceolate, or oblong- 
elliptical, or subrotund, smooth, coriaceous, with or without : 
a defined mid.rib. Veins uniform, reticulated. Receptacles 
discal, immersed, forming grooves in which the sporangia 
are seated. Sori reticulated or interrupted. 
Type. Antrophyum plantagineum, Kaulf. 
Illust. Hook. and Bauer. Gen. Fil., t. 109 A. ; Moore Ind. 
Fil., p. 16, A., 44, A., 45, A.; J. Sm. Ferns, Brit. and 
For., fig. 55; Hook. Syn. Fil., t. 6, fig. 55. 
Oss.—The general aspect and mode of growth indicates 
the affinity of this genus to be with Vittaria, from which 
it is technically distinguished by its reticulate venation. 
Representatives of this genus are widely distributed 
throughout the tropics, being found in the islands of the 
Pacific and Indian Oceans, the continent of Asia, the West 
Indian Islands, Tropical America and Mauritius, and have 
also lately been found in West Tropical Africa. 
