112 COPBLAND. 



ad alam angustam pinnatifidis ; segmentis oblongis, inciso-serratis, obtusis, 

 tenuiter membranaceis, atroviridibus (siccis) ; venulis simplicibus; soris 

 medialibus, parvis, nudis, subglobosis; cellulis annuli 10-12. 



Luzon, Province of Laguna, Mount Banajao, Copeland 2Uf2, in a very damp 

 gorge at an altitude of 1,600 m. 



A species of unknown affinity. It has rather the aspect of Athyrium; but I 

 do not know any species of that genus to which it seems to be very near, and 

 so have been constrained by the form of the sori to describe it as Dryopteris. 

 It suggests M onachosorum in the small sori, blackish dried fronds, and swollen 

 succulent bases of the stipes. It is more primitive and generalized than any 

 other fern, known to me, with naked sori. 



ATHYRIUM Roth. 



Athyrium macrocarpum (Bl.) Bedd. Ferns South. Ind. (1863) t. 152, 153. 



A. halconense Christ in Philip. Journ. Sci. Bot. 3 (1908) 273. 



Luzon, Province of Laguna, Mount Banajao, Copeland 2120, altitude 2,200 m. 



The plai»t called Athyrium halconense is a form with exceptionally uniform 

 and entire pinnae. Although recognizing its affinity * I did not doubt its distinct- 

 ness until I collected on Mount Banajao specimens bearing on the same stem 

 fronds of typical A. macrocarpum, and less adult, but fertile ones, referable to 

 A. halconense, and found with these, less adult plants altogether identical with 

 typical A. halconense. Typical A. macrocarpum has also come in from Mount 

 Pulog, Province of Benguet, Luzon, For. Bur. 16276 Gurran, Merritt, & Zschokke. 

 Athyrium anisoptcron Christ is very near this, but is, up to the present time, 

 recognizable by its crowded sori. 



CUR RAN I A genus novum. 



Ehizomate late repente, palearum cellularum lumine fusco; stipitibus 

 non articulatis; fronde deltoidea, pimiatifida, glabra; venulae infimae 

 acroscopicae ramis saepe anastomosantibus ; soris dorsalibus elongatis, 

 nudis, paraphysibus carentibus. 



Currania gracilipes sp. nov. 



Ehizomate 1 mm crasso, versus apieem paleis sordidis 1.5 mm longis 

 lanceolato-ovatis vestito; stipitibus viridibus stramineisque, filiformibus, 

 usque ad 20 cm altis, glabris; fronde 5-9 cm alta, 3-5.5 cm lata, cordata, 

 ad alam 4 mm latam pinnatifida ; segmentis late oblongis, infimis f alcatis, 

 aliis rectis, obtusis, serratis, siccis papyraceis, utrinque viridibus; venulis 

 furcatis, ramo inferiore saepius iterum furcato, liberis vel ramis 2 venulae 

 infimae acroscopicae sursum coadunatis; soris utroque latere uni- vel bi- 

 seriatis, oblongis vel linearibus, 1-3 mm longis. 



Luzon, Province of Benguet, Mount Pulog, For. Bur. 16S02 Gurran, Merritt, 

 & Zschokke, in rock-crevices of open grass land, altitude 2,900 m, Copeland P. P. E. 

 112; Pauai, alt. 2,300 m, Copeland. 



This fern is in all probability derived from Athyrium. The paleos have 

 reasonably thin cell-walls and dark contents. The epidermal cells of the frond 



l This Journal, Botany 3 (1908) 291. 



