157 



VITTARIA Sin. 

 Vittaria alternans Copeland n. sp. 



Rhizomate tonne, roponte, paleis minutis Bubulatis purpureo-atris dense 

 vcstito; frondibus seriatis nee non confertissimis, stipitibus carentibus, 

 10-15 cm. altis, angustissimis, 1 mm. vol minus latis, 0.5 mm. crassis, 

 ecostatis, vivantibus non fragilibus; soris intramarginalibus in suleis 

 profundis hand margine involuta protectis, interrupts; parapliysium 

 eapitibus turbinatis oleaginis; sporis reniformibus. 



Mindanao, Zamboanga, San Ramon, Copeland 1707, May, 1905. Ad truncos 

 epiphytica, alt. 800 m. 



This little fern has a remarkable, superficial resemblance to Isoctcs. In the 

 field I suspected it to be Y. lincata irichoides Christ; but the frond is too thick 

 to permit of any considerable folding over the sorus, and it is altogether ecostate 

 in appearance. The groove of the sorus is 0.35 mm. deep. The spicular idioblasts 

 of the epidermis are very numerous. 



Vittaria taeniophylla Copeland n. sp. 



Rhizomate repente, 2 mm. crasso, paleis lanceolatis brunnois albescen- 

 tibus lore integris dense vestito; frondibus confertis, 30-35 cm. altis, 

 5-7 mm. latis, acuminatis, deorsum sensim ad pedes angustatis, carnoso- 

 herbaeeis, infra pallidis; costa usque ad apicem procurrcnte, viride, infra 

 prominula; venulis paucis, oceultis; soribus dorsalibus, superficialibus, 

 rubidulis; parapbvsibus euculliformibus; sporis compressis, 30 x GO /a. 



Luzon, Benguet, monte Bulusan, 2,100 m. s. m., Copeland 1930. 



A beautiful and apparently very distinct species, locally abundant. The line 

 of the sorus, well within the margin, is practically indistinguishable on the upper 

 surface. 



ANTROPHYUM Kaulf. 



Antrophyum latifolium Bl. 



Mindanao, Province of Zamboanga. San Ramon, Copeland 1747; Province of 

 Davao, Mount Apo, Copeland. 



Java, India, China. 



CHRISTIOPTERIS Copel. 



Christiopteris sagitta (Christ) Copel. 



This species has been found fertile near where the original sterile plants were 

 collected. Luzon, Province of Lepanto, Mount Data, Copeland 1905. (Tab. 13.) 



PROSAPTIA Presl. 



Rhizome short, clothed with ciliate palese; stipe short, articulate; frond pin- 

 natifid or barely pinnate; sori terminating veinlets, immersed in the body of 

 the frond in cavities whose openings are in or under the margin ; indusium none. 



A very homogeneous group of epiphytes, derived from Polypodium; especially 

 intimately related to the group of P. obliquatum, with the species of which 

 group they have many structural features in common — the ciliate, acuminate, 

 dark palea?, form and habit of frond, curling backward in drying, and. deeply 

 immersed sori. The difference is in the opening of the cavity containing the 

 sorus — directly downward in Polypodium, horizontally or obliquely to the margin 

 in Prosaptia. J. Smith did no violence in uniting these ferns with Polypodium 

 (Hooker's Journal of Botany, 4 (1842), 46). But, for me, a genus is a group 



