Ferns of British India and Ceylon. 5 



1. Diacalpe aspidioides. Kohima, 5,000-6,000 feet alt. 



2. Omic Diacalpe fceniculacea here; it is Lastrea fcenicu- 

 lacea, the involucres being reniform or polystichoid. 



TRIBE Ia.-MATONIE^. 



Indusium umbrella-shaped, 6-lobed. 

 Matonia pectinata. Perak. {Scorteckim.) 



TRIBE II.— DICKSONIEiE. 



Struthiopteris oriextalis. 9,000-12,000 feet alt. 



Woodsia hyperborea. Rohtang Pass, between Kullu 

 and Lahoul. {Dr. Cuttcll.) Gurhwal, Kamaon, and West Nepal. 

 {Dr. Duthie.) 



(Also in Afghanistan.) 



2. Woodsia lanosa. Omit this species altogether ; it is 

 Gymnogramme Andersorii. 



GENUS IXa.— DICKSONIA. {VHcnticr.) 

 (After James Dickson, a cryptogamic botanist.) 



Indusium coriaceous two-valved, the outer valve formed of 

 a more or less attenuated lobule of the pinnule cucullate, some- 

 times equalling in size, but generally larger than, the inner valve. 

 Veins simple, forked, or pinnate ; veinlets free. 



Distinguished from Dennsteedtia by its two-valved indusium, 

 and from Cibotium by the more or less herbaceous texture of the 

 outer valve of the indusium, it being a partially-changed portion 

 of the frond. 



Dicksoma AMPLA. {Baker.) Rhizome creeping, £ inch 

 thick, clothed with dark scales ; fronds 4 feet or more long, 

 glabrous, deltoid, tripinnate, firm in texture ; rachis brown, un- 

 armed, pubescent only down the channelled face ; pinnae oblong- 

 lanceolate, the lower ones the largest, 2-3 feet long, 10 inches broad; 



