PLANTiE JAVANICiE RARIORES. 563 



formibus in laminam transversira interrupte striatam vix 

 definitse latitudinis facile, ut in plerisque Pilicibus Lyco- 

 podineisque, solubilibus. Stipites elongatse frondem ipsam 

 ssepius superantes crassitie peimse anatinge, adultse glabrae 

 laeves pallide castaiieae teretiusculse antice canaliculatse ; 

 vasis scalariformibus tubum fere completum antice defi- 

 cientem efformantibus. Frondes ad basin usque bipartitse 

 potiusve binatge ; partiales dimidiatse palmato-lobatae, lobis 

 incisis indivisisque acuminatis serratis ; novelise utrinque 

 tectse vellere ferrugineo-castaneo e pilis articulatis laxis 

 constante ; adultse glabratse pilis nonnullis secundum latera 

 venarum primarium aliisque soros cingentibus relictis. 

 Venee primarise dichotomse validse, subter prominentes 

 teretes, super vix emersse, divisionibus ultimis ssepe infra 

 apicem acuminatum lobi conniventibus et unitis. Venulse 

 secundarise et tertiarise divaricatissimse creberrime anasto- 

 mosantes areolas subquadratas sed amorphas efformantes, 

 ultimse liberse apice vix dilatato. Epidermidis areolse 

 minutse parietibus pauio flexuosis. Stomata in pagina 

 tantum inferiore. Sori parvi subrotundi passim e con- 

 fluentia duorum aniorplii, lateribus venularum tertiarium 

 saepiusque ubi plures confluunt insidentes, novelli pilis 

 articulatis copiosis semitecti, adulti pilis brevioribus capsulis 

 interstinctis . Capsulse breve pedicellatse annulo verticali 

 incompleto lateribus areolatis. Spora Isevia subovalia inse- 

 quilatera margine altero convexo altero rectiusculo. 



Obs. ]. — Dr., Horsfield, who discovered this remarkable 

 species in 1814, has the following observations respect- 

 ing it. 



" I have four localities for this Fern. The most western 

 is the mountain Karang, situated south of Bantam ; next 

 the mountain Gede, south of Batavia; proceeding west- 

 ward, Ptarangan ; and finally Mount Prahu ; the latter lies 

 south-west of Samarang. It is remarkable that I never 

 noticed it in my numerous excursions through the eastern 

 provinces ; and I have concluded that it is not at all, or at 

 least that it is very rarely, found eastward of the longitude 

 of Samarang, which lies near the middle of the island, as far 



