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however, is due to the growth of lesser sort from the base of 

 the antecedent proliferation, and is not strictly, so to speak, 

 dichotomous or opposite ramification. The midrib is very slender, 

 composed of three oblong cells in surface-view, jointed at short 

 intervals, and ecorticated. Marginal portion of the frond consists 

 of somewhat reticulated cells, the remaining being tesselated as 

 it is the case in other species of the genus. Along the margin, 

 rather thick, jointed, simple or slightly branched, root-like fibres 

 interruptedly arise in abundance, leaving the interval portion 

 entire. They are formed either from the prolongation of a single 

 marginal cell, or by fusion of three or more of them, and are 

 often abundantly emitted from the apical portion of, or from slightly 

 constricted part of the segments. Besides these root fibres, there 

 is found a scutate disk as shown in the fig. 4. Sort of tetra- 

 spores are oblong, borne on the midrib of a leaflet, being produced 

 by the confluence of linear ones formed along both sides of the 

 midrib, and are lodged below the half way of the entire length 

 of the sporophylls bearing sori. Cystocarps unknown at present. 

 Colour is clear rosy- red. Substance thin and delicate. 



Affinity which the present plant has with Hypoglossum 

 spathidatum (Kutz ？) J. Ag. is beyond any doubt ； but, in that 

 plant, there is no marginal root-fibres. The apparently dichoto- 

 mous arrangement of proliferations in the plant in question makes us 

 to remind that of Hypoglossum dendroides (Hatv.) J. Ag., in 

 which proliferations are always dichotomous, while in the present 

 plant such arrangements are only occasional and apparent. 



Plate VII. Fig. 1 : plant in nat. size. ― Fig. 2 : portion of 

 frond, -？ -. 一 Fig. 3 : root-like fibre, marked a in Fig. 2， や. 一 

 Fig. 4 : disk-shaped root produced from margin of frond, ― 



