Pteridophyten. — Floristik, Geographie, Systematik etc. 631 



All the species are from tropical America, and a new 

 parasitic fungus, PavmiUaria Stigmatoptendis Ferd. & Winge, seems 

 to be restricted to the genus, and to occur commonly on many of 

 the species. C. H. Ostenfeld. 



Christensen, C, The American ferns of the group Dryopte- 

 ris opposita contained in the U. S. National Museum. 

 (Smithsonian Mise. Collect. (Quarterly Issue). LH. p. 365—396. 

 July 12, 1909.) 



This paper is supplementary to the author's earlier paper entitled 

 "Revision of the American species of Dryopteris of the group of D. 

 opposita'\ which appeared in 1907 (Kgl. Danske Vidensk. Selsk. 

 Skrifter, 7 Raekke, Naturvidensk. og Math. Afd. IV. p. 247-336.). 

 As indicated by the title it deals with the collections of the U. S. 

 National Museum, of which in this group about 425 specimens were 

 examined by the author. Such of these as were not enumerated 

 previously are here listed with füll data; and, in addition, tables 

 are given to indicate geographic distribution; revised diagnoses and 

 critical notes on the relationship of several species are given, and 

 8 species and 3 varieties are described as new. 



The new forms are as foUows: Dryopteris piedrensis C. Chr., 

 sp. nov., the tj^pe being from the upper slopes and summit of the 

 Gran Piedra, Oriente, Cuba, altitude 900—1200 meters, Maxon 

 4041; D. panmnensis proxima C. Chr., var. nov., the type from 

 Cuernavaca, Mexico, altitude about 150 meters, H. Ross 326; 

 D. leiicothrix C. Chr., sp. nov., the type from Yungas, Bolivia, 

 altitude 4000 ft., H. H. Rusby 432; D. pseudosancta C. Chr., sp. 

 nov., the type from the Rio Toro Amarillo, Llanuras de Santa 

 Clara, Costa Rica, altitude 300 meters, Donneil Smith 6902; 

 D. sancta strigosa C. Chr. , var. nov. , the type from the vicinity of 

 Jaguey, altitude 420—500 meters, Cuba, Maxon 4142; D. consan- 

 giiinea C. Chr., var. nov., the type from Second Breakfast Spring, 

 Jamaica, altitude 2000 ft., Maxon 997; D. melanocJüaena C. Chr., 

 sp. nov., the type from Coban, Alta Verapaz, Guatemala, alti- 

 tude 4300 ft., Donnell Smith 168, in part.; D. doininicensisC. Chr., 

 sp. nov., the type from Mt. Diablotin, Dominica, F. E. Lloyd 

 876; D. struthiopteroides C. Chr., sp. nov., the type from Concep- 

 cion, Department of Escuintla, Guatemala, altitude 1200 ft., 

 Donnell Smith 2459; D. Rtisbyi C. Chr., sp. nov., the type from 

 near Yungas, Bolivia, altitude 4000 ft., H. H. Rusby 429; D. 

 Pittieri C. Chr., sp.nov., the t^^pe from Paramo de Buena Vista, 

 Huila Group, Central Cordillera, Colombia, Upper forest zone, 

 altitude 3100 meters, H. Pittier 1200; and D. lanipes C. Chr., sp. 

 nov., the tj^pe from Pinula, Department of Guatemala, Guate- 

 mala, altitude 4300 ft., Donnell Smith 2462. Maxon. 



Anonyme. Notes critiques sur les plantes distribuees. 

 (Bull. Assoc. Pyreneenne pour Fechange des plantes. 1908/9. p. 

 3—10. Quimper, 1909.) 



De courtes notices sont consacrees par divers auteurs aux espe- 

 ces et Varietes suivantes, dont plusieurs sont nouvelles: Arenaria 

 tetraqiietra L. var. imbricata (Lag. et Rodr.), Rosa speciosa Des. var. 

 pseudo-tolosana Sud. et var. pseiido-gallica Sud., Riihus ciliolentus 

 Kinscher, hybride nouveau, Cotyledon praealtiis Sampaio, espece 



