157 
VITTARIA Sm. 
Vittaria alternans Copeland n. sp. 
L’hizomato tenue, repente, ]ialeis mimitis siil)ulatis piirpui'co-atris dense 
vestito; frondilnis seriatis nec non confei'tissiinis, sti])itil)iis carentibus, 
10-15 cm. altis, angustissimis, 1 mm. vei minus latis, 0.5 mm. crassis, 
ecostatis, vivantibus non fragilil)us ; sovis intramarginalibus in sulcis 
■profund is hand margine involuta protectis, interruptis ; parapliysinm 
capitibus turbinatis oieaginis; spoils reniformibus. 
Mindanao, Zamboanga, San Ramon, Vopehuid 1707, Alay, 1905. Ad tnincos 
epiphytiea, alt. 800 m. 
This little fern has a remarkable, superficial resemblance to Isoetcs. In the 
field I suspected it to be T. Uneofa trichoides Christ; Imt the frond is too thick 
to permit of any considerable folding over the soriis, and it is altogether ecostate 
in appearance. The groove of the sorus is 0.35 mm. deep. The spicular idiohlasts 
of the epidermis are very numerous. 
Vittaria taeniophylla Copeland n. s]i. 
.Hliizomato repente, 2 mm. crasso, })aleis lanceolatis lirunneis albescen- 
tibus fere integris dense vestito ; frondibus confertis, 30-35 cm. altis, 
5-7 mm. latis, acuminatis, deorsiim sensim ad pedes angustatis, carnoso- 
herbaceis, infra jiallidis ; costa usque ad apicem procurrente, tdride, infra 
prominida ; venulis panels, occultis; spilbus dorsalibus, superlicialibus, 
rubidulis; parapbysibus cueulliformibus ; spoils compressis, 30 x GO p. 
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, IMount Data, Copeland 1905. (Tab. 13.) 
PROSAPTIA Presl. 
Rhizome short, clothed with ciliate pale*; stipe short, articulate; frond piii- 
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 Pol p podium ; especially 
intimately related to the group of P. ohliqualum, with the species of which 
group they have many structural features in common — the ciliate, acuminate, 
dark pale*, form and habit of frond, curling backward in drying, and deeply 
immersed sori. The ditl'erence 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), 40). But, for me, a genus is a group 
