201 



253 



dark-green, membranous, 15 — 20 cm long, 4—5 cm broad, sessile or very shortly 

 stalked, lower ones much reflexed, incised scarcely halfway to the costa into a little 

 falcate, obtuse lobes. Terminal pinna rather distinct with a bud at base. Rachis 

 slender, sparsely soft-hairy, lamina otherwise 

 quite glabrous, but the surfaces often minutely 

 warted. Veins 15 — 16-jugate, the lower 3—4 

 pairs connivent to a cartilagineous membrane 

 below the sinus; the basal posterior vein raises 

 always from the costa. Sori a little infra- 

 medial, indusium small, deciduous, ciliate. 

 Sporangia glabrous. 



253. Dryopteris cuneata n. sp. — Fig. 42. 



Type from Brazil: Sao Paulo, Santos, 

 H. MosÉN nr. 3545 (Rg fol. fert.; S fol. ster.j. 



Rhizomate repente, dense radicante, apice 

 squamis rufis, latis pil is furcatis sparse ci- 

 liatis, dense onusto. Stipite 6'/2 dem longo, 

 angulalo, stramineo, glabro. Lamina ovata, 

 ca. 4 dem longa, pinnata cum imparl, pure vi- 

 ridi (infra pallidiore), herbacea vel submem- 

 branacea, glaberrima. Pinnis lateralibus7-jugis, 

 inferioribus oppositis, 4 cm inter se remotis, 

 breviter petiolulatis, superioribus alternis, su- 

 premis sessilibus, mediis 20 cm longis, medio 

 3 cm latis, acuminatis, basi cuneata subintegra, 

 ad medium pinnatifidis. Laciniis approximatis, 

 subfalcatis, 5 mm latis, obtusis vel subacutis. 

 Venis simplicibus, 9— 11-jugis, inferioribus 4 — 5 

 ad sinum conniventibus. Soris inframedialibus, 

 parvis, indusiis persistentibus rufis sparse 

 ciliatis tectis. Sporangiis glabris. 



This new species seems different from all 

 other Brazilian species. It is nearest IJ. mo- 

 nosora, which it resembles in shape of pinnæ 

 and venation, but it is entirely glabrous and 

 without scales on rachis, has a distinct ter- 

 minal pinna, the sori are inframedial and 

 the stipe much longer. In general habit it 

 resembles D. paucipinnata, but it is much more thin-leaved and the sori are 

 inframedial. 



Fig. 42. D. cuneata n. sp. Pinna x *li, seg- 

 ments Xl'/s: and an entire leaf, showing its 

 habit, much reduced. 



I). K. [) Vidensk. Selsk. Skr. 



Hïekke. aaturvidensk. oi< matliem. Afd. X. 2. 



33 



