680 Pteridophyten. 



cific names are enumerated in the Supplement. The number of 

 new species described in 1906 — 1912 and adopted in the present 

 paper are 1644. The number of species adopted in the Index was 

 5940, of these 248 are now reduced to synonyms, while 75 older spe- 

 cies are restored. The number of species of ferns adopted until the 

 end of 1912 is thus 7411. 



The book is published Dec. 20, 1913. C. H. Ostenfeld. 



Christeosen, C, A monograph of the genus Dryopteris. 

 Part. I. The tropical american pinnatifid-bipin- 

 natifid Species. (Danske Vidensk. Selsk. Skrifter, 7 Raekke, 

 naturvid.-mathem. Afd. X. 2. 230 pp. 46 textfig. Köbenhavn, 1913.) 



This paper deals with the tropical american species of Dryopteris 

 which have the lamina from subentire to bipinnatifidly cut; this is 

 an artificial delimitation which is chosen from practical reasons. 



280 species are enumerated, 100 of which have been treated 

 by the author in earlier papers. He has succeeded in having seen 

 original specimens of nearly all described species, having had 

 them for inspection from a great number of public and private 

 collections. 



The species are grouped into 10 subgenera of which he giyes 

 detailed descriptions; they are the following: Eudryopteris (species 

 1 — 11), Stigmatopteris (12—28), Ctenites (29—53), Lastrea (54—170), 

 Glaphyropteris (170-176), Steiropteris (177 — 189), C>'c/osoms( 190— 202), 

 Leptogramma (203—205), Goniopteris (206 — 267) and Meniscium (spe- 

 cies 268-280). 



Under each subgenus a key to the species is given, after the 

 subgeneric description, and then foUows the enumeration of the 

 species. This enumeration contains synonymy, critical remarks and 

 lists of the localities from which specimens have been exam^ined. 

 Figures in the text from drawings by the author illustrate hairs 

 and scales and parts of the lamina and pinnae of several of the 

 species. 



The following new species and varieties have been descri- 

 bed: D. patula var. Rossii, D. refidgens var. peruviana, D. falcicu- 

 lata var. paranaensis, D. feuestralis, D. deflexa var. Aschersotiii 

 Mett., D. Anniesii var. Ottonis Rosenst., D. strigilosa var. Cookii 

 Maxon, D. lanceolata var. deltoideolaticeolaia, D. sanctiforrnis, D. 

 Millei, D. phacelothrix C. Chr. et Rosenst., D. euchlora vav. inaequans, 

 D. cocJiaenasis, D. niidtiforniis, D. deciissata var. brasiliensis, D. po- 

 lyphlebia, D. patens var. dependens and var. lanosa, D. normalis 

 var. Harperi and var. Lindheimeri (A. Br.), D. Berroi, D. oligophylla 

 var. pallescenSj var. liitescens and var. aequatorialiSj D. gongylodes 

 var. longipinna, D. dissimulans Maxon et C. Chr., D. reptans var. 

 angusta and var. cotiforinis, D. Waruiingii, D. hastata var. suhau- 

 riculata Kuhn, D. inonosora var. Schiffneri, D.heterotrichaD.Schwacke- 

 ana Christ., D. glochidiata (Mett. msc), D. uicaraguensisy^AV. nnuor, 

 D. cuneata, D. Goeldii, D. juruensis, D. Rolandii, D. ensiformis, D. 

 lingulatn. The names are attributed to the author, if not otherwise 

 given. — Further the author has made the following new contribu- 

 tions: D. mexicana (Presl), D. pedicellata (Christ.), D. Karstenii (A. 

 Br.), D. brachypus (Sod.), D. nitens (Desv ), D. piloso-hispidn (Hook.), 

 D. Ruisiana '(Klotzsch.), D. glaiidiilom (Desv.) [non D. glandielosa 

 (Bl.) O. Ktze which is renamed D. inalagensis C. Chr.], D. aiiges- 

 cens (Link), D. asterothrix (Fee), D. Jamesoni (Hook.), D. eqiiitans 



