219 271 



272. Dryopteris lingulata n. sp. 



Syn. Phegopferis Andreana Christ, Prim. Fl. Costar. 3: 35. 1901. 



Type from Costa Rica: Forêts de la vallée du Rio Hondo près Madre de 

 Dios, 200 m, leg. Pittier nr. 10349 (C). 



Rhizomate? Stipite inconipleto 60 cm longo, griseo, glabro, anguloso. Lamina 

 60 — 70 cm longa, chartacea, laete-viridi, costis supra minute puberulis exceptis om- 

 nino glabra, impari-pinnata. Pinnis lateralibus, 5-jugis, 12 cm inter se remotis, lin- 

 gulatis seu elliptico-lanceolatis, 30— 35 cm longis, medio 7 cm latis, caudato-acuminatis, 

 marginibus undulatis, subintegris inferioribus, petiole 2 — 4 cm longo stipitatis, basi 

 cuneata, supremis sessilibus basi inferiore ad rachin adnata, superiore rotundato- 

 cuneata. Venis secundariis 6—8 mm inter se distantibus, tertiariis 16 — 17 inter se 

 3 mm remotis convexis; venulis liberis apice late clavato ultra medium areolae in 

 parenchymate desinentibus, seu ad venam transversam superiorem productis. Soris 

 lunatis, angustis, saepe 4— 5 mm longis. Receptaculis glabris. 



Differs from the two preceding species, which it resembles by the long-stalked 

 inferior pinnae with a cuneate base, by the shape of the pinnae and its long, narrow, 

 convex sori. A single pinna resembles not a little an entire, small \eni of D. gigantea, 

 from which it differs by its glabrous rachis and costæ beneath. 



273. Dryopteris gigantea (Mett.) C. Chr. Index 267. 1905. 



Syn. Meniscium giganteum Mett. Fil. Lechl. 1: 19. 1856. 



Type from Peru: St. Gavan, Lechler nr. 2292 (B!, S). Other specimens 

 from Ecuador, Sodiro(C), Columbia, Costa Rica, Pittier nr. 1163 and 9448 (C). 



Well-marked by its entire frond, hairy midrib and principal veins, and by the 

 cross-veins being covered with sporangia from end to end. It appears that the 

 species also can be pinnate with 1 — 3 pairs of lateral pinnæ. 



The following forms, in Index Fil. referred to D. reticulata, are certainly good 

 species (for synonymy see Ind. Fil.). 



274. Dryopteris reticulata (L.) Urb. 



The typical form of this is West-Indian, but very similar forms are found in 

 Central-America. In Brazil the species scarcely occurs. 



275. Dryopteris sorbifolia (Jacq.) Hieron. Hedwigia 46: 350. 1907. 

 Area: Mexico along the Andes to Peru. 



HiERONYMUs refers to this species Meniscium arborescens Willd. and M. Kapp- 

 lerianum Fée and he regards Phegopleris mollis Mett. as a variety. 



276. Meniscium macrophyllum Kze. — Bahia and Guiana. 



277. Phegopteris membranacea Mett. — Peru, Lechler nr. 1785. 



35* 



