14!S 



TRICIIOMANES RIGIDUM, Vau. Pulchellum. 



SwARTZ. Hooker. Hedwig. 

 WiLLDENOw. (Not of Klotzsch, Raddi, or Wallicii.) 



PLATE LXII. — H. 



Tricliomanes pyramidale, 



" acMllcBifolium, 



" mandioccanum, 



obscurum, 



Wallicii. 



"WlLLDENO^V. 



Raddi. 



Blume. J. Smith. 



Trichomanes — From tlie Greek, soft hair. 



Sigidum — Rigid. 



A FINE tropical Fern, from Jamaica, Dominica, Martinique, 

 Brazil, Peru, Quito, Mauritius, Islands in the Pacific, Philippine 

 Islands, and Ceylon. 



The fronds, which are broadly ovate, thick, and rigid, are 

 bipinnate; the pinnules lengthy lanceolate, cuneate; ultimate 

 segments varying in size, subacute, and either simple or bifid, 

 very narrow and rounded. 



Involucres supra-axillary on the inner margin of the lower 

 segments, free, the mouth entire, and not two-lipped. 



Rachis terete, wingless, or with a narrow wing. 



Fronds nine to twelve inches in length; the stipes from four 

 to six inches, sometimes more, being half the length of the 

 whole frond. Colour dark green. 



Sori numerous. 



Fronds erect, on round wiry stalks. 



Requires a very humid but airy atmosphere, with a tem- 

 perature varying between 55° and 80°. 



There is a variety with broader and more crowded divisions. 

 The typical form has nearly flat and somewhat dense fronds. 



My thanks are due to Messrs. J. Backhouse and Son, of 

 York, for the frond illustrated. 



