THE PTERIDOPHYTA OF THE JUAN F. 3 



through a weak lens. In shape and d considerably; 



generally it is oblanccoiate, broadening upwards from ihe cuneate, shortlv 

 decurrent base; subdeltoid, deeply pinnatifid fronds, leaving a broad even 

 to the midrib are, however, not uncommon. Segments erect, 2 — 2.: mm broad, 

 obtuse or emarginate or deeply furcate at apex, very unequal in length, the 

 larger ones often producing a secondary segment on the upper side near the 

 base. Margins even, not at all thickened. Veins not regularly pinnatifid but 

 rather repetitiously dichotomous, not atrofuscous as s H. terminating in 



the emargination; spurious veins none. Sori rareiy terminal on the main branches 



nanes Phiiip{ ianum Sturm. Plants showing different tvpes of furcation, na: 

 ;nd enlarged sorus. 



of the veins but genet ally confined to the basal secondary segments, deeply 

 immersed; indusium turbinate with a widened entire mouth; receptacle long 

 exserted but easily broken ■ 



DEN BOSCH placed the species in his genus Gonocormis, but it may 

 be seriously doubted whether this position is natural. It loo! much 



different from all other species of that group, all of which belong to the Old 

 World. In general habit and size it resembles the Polynesian T. humile Forst., 

 but it is certainly not nearly related to it. By its cellular structure it is 

 quite unique. 



Area of distribution: Probably endemic in Masatierra. 



2. T. Inaae C. Chr. nov. spec. 



Syn. T. pyxidiferum L., Hemsl. 69; Johow 1893:45, 1896: 1; 

 EutrichomciKts e grege T. pyxidiferi L.. rhizomate intricate filiformi; 



