PLANTS JAVANIC.E RARIORES. 563
formibus in laminam transversim interrupte striatam vix definitae latitudinis facile, ut in plerisque Filicibus Lyco- podinersque, solubilibus. Stipites elongatae frondem ipsam saepius superantes crassitie pennae anatinae, adultae glabrae laeves pallide castaneae teretiusculae antice canaliculatae ; vasis scalariformibus tubum fere completum antice defi- cientem efformantibus. Frondes ad basin nsque bipartitae potiusve binatae ; partiales dimidiatae palmato-lobatae, lobis incisis indivisisque acuminatis serratis ; novellae utrinque tectae vellere ferrugineo-castaneo e pilis articnlatis laxis constante ; adnltae glabratae pilis nonnullis secundum latera venarum primarium aliisque soros cingentibus relictis. Venae primariae dichotomae valiclae, subter prominentes teretes, super vix emersae, divisionibus ultimis saepe infra apicem acuminatum lobi conniventibus et unitis. Venulae secundariae et tertiariae clivaricatissiraae creberrime anasto- mosantes areolas subquadratas sed amorphas efformantes, ultimae liberae apice vix clilatato. Epidermidis areolae minutae parietibus paulo flexuosis. Stomata in pagina tantum inferiore. Sori parvi subrotundi passim e con- fluentia duorum amorphi, lateribus venularum tertiarium saepiusque ubi plures conflimnt insidentes, novelli pilis articnlatis copiosis semitecti, adulti pilis brevioribus capsulis interstinctis. Capsulae breve pedicellatae annulo verticali incompleto lateribus areolatis. Spora laevia subovalia inae- quilateramargine 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
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