44 

 25. Dryopteris [sect. Filix-mas] basisora Christ, n. sp. 



Stipite 40 cm, longo, flavo, basi fere digiti, supra pennae cygni crassitie, 

 sulcato, basi squamis lanceolato-subulatis, 2 cm. longis, 4 mm. latis, rufo- 

 brunneis, lucidis densissime involuto. Stipite, rachi costisque iisdem squa- 

 mis et setis patulis, 5 mm. longis, dense vestitis ; rachi costisque flavis. 

 Fronde 66 cm. longa, 22 cm. lata, e basi latissima oblonga, subito acu- 

 minata, bipinnata et fere tripinnatifida. Pinnis sessilibus, circa 1 5 utrinque 

 infra apicem pinnatisectum, infimis petiolulatis, ceteris sessilibus, basi dila- 

 tatis etposticeauctis, caudato-acuminatis, infimis 19cm., mediisiS cm. lon- 

 gis, basi usque 4 cm. latis, remotis, erectis^ pinnatis. Pinnulis inferioribus 

 liberis, petiolulatis, basi cordato-ovatis, supremisadnatis, circa 20 utrinque, 

 confertis, infimis 22 cm. longis, 1 cm. latis, oblongo-obtusis, infimis 

 usque ad alam angustam incisis. Lobis regularibus, circa 8 utrinque, ro- 

 tundato obtusis, 2,5 mm. latis, mucronulato-dentatis ; nervis pluries furcatis 

 sive in lobulis pinnatis. Soris ad basin lobulorum solitaries, i,5 latis, ro- 

 tundis, rufis, costula? pinnularum adpressis, 4-7 utrinque pro pinnula, 

 loborum pinnularumque apicibus liberis (id est soris destitutis). Indusio 

 reniformi, persistente, conspiculo, griseo, umbonato, fimbriato. Textura 

 coriacea, colore dilute viridi, opaco, faciebus leviter furfuraceis. 



Chine. — Yunnan : ravins du Tchong-chan, 10 sept, et 



9 nov. 1 905 [Ducloux) ; Mao-kou-tchang, 29 aout i883 (De- 

 lav ay). 



Magnifique espece; port du D. elongata Alton, de Madere, 

 mais distinguee par un stipe et un rhachis amplement couverts 

 d'ecailleslongues, subulees, rousses; par des segments a pointe 

 non incisee, obtuse, portant de tres gros sores a leur base, 

 laissant iibre la pointe; le membre le plus distinct du groupe 



si riche des Filix-mas du Yunnan 



26. W oodsia indusiosa Christ, n. sp 



Rhizomate brevi, obliquo, setis lanceolato-subulatis, rufis, 6 mm. longis, 

 cum stipitum basi tecto, 5 cm. longo, tereti, cum rachi rigido et penna? cor- 

 vinae crassitie. Rachi stipiteque tenuissimis, brevissimiset squamulis brun- 

 neis, lanceolatis, 2 mm. longis, sparsis, subnitidis, flavo-stramineis tectis. 

 hrondelanceolata, acuminata, versus basin obpinnas sensim abbreviatas 

 angustata, 38 cm. longa, 5 cm. lata, bipinnata. Pinnis patentibus, circa 

 5o utrinque, sape oppositis, pectinato-confertis, mediis 2,5 cm. longis, 

 8 mm latis. acutiusculis, sessilibus, basi dilatatis, ad alam angustam et ad 

 basin tere ad costam incisis. Segmentis circa i5 utrinque, imbricato-con- 

 ertis, 5 5 mm. longis, 2 mm. latis, obtusis, minute crenulatis, cum costa 



facie intenore dense puberutis ^nri« r-\ r ™ ■-.„■>■ • . •• •• 



I'uuciuub. sons circa .-> utrinque, inJusiis gnseis. 



