﻿5〇 



and has a more or less distinct, immersed, slightly flexuous midrib 

 which becomes fainter gradually upwards. The ramification is 

 irregularly decompound- pinnate, with patent branches the axils of 

 which are rounded. The proliferous branchlets, which are always 

 narrowed at the base, issue from or above the axils of pinnae. 

 The simple pinnae are broad at the base, pointed at the apex, 

 with entire margin, and about i mm. long. They are incurved 

 when young, but erecto-patent or somewhat recurved when old. 

 They have an excentric monosiphonous axis and are corticated to 

 the apex. Frtdis of both kinds are developed from pinnae of 

 compound character, which "are stunted and cylindrical. They are 

 formed either singly or otherwise, seriated along both sides of 

 branches above the axils of deltoid pinnae. The masses of tetra- 

 sporangia are roundish or oblong, densely aggregated on the apex 

 of short pedicels, that is pinnae of the compound character. They 

 are developed from the terminal cells of monosiphonous pinnulae 

 and pinnellse. And these are accompanied by sterile pinnulae 

 which are either simple and confervoid or pinnate and subclavate. 

 Cystocarps are formed on a short cylindrical pedicel, i n vol u crated 

 with 7-8 thickly corticated ramuli which are simple, cylindrical 

 and entire, tapering towards the apex. Gonimoblast parted into 

 two or three roundish gonimolobes surrounded by a colorless 

 membrane. Antheridia unknown to me. The colour of frond is 

 deep-red, turning to dark-red in drying. The substance is car- 

 tilaginous and the plant adheres imperfectly to paper in drying, 

 except the younger portion. 



The present plant may be considered as a Ptilota having 

 opposite dissimilar pinnae, of which compound, that is pinnated, 

 ones have been suppressed in sterile frond, the latter being re- 

 presented only in fertile form, and as the consequence, pinnae 



