124 Botanisches Centralblatt. 



Niehols, G. E. 1918. War work for bryologists. (Bryologist. XXI. 



p. 53—56.) 

 Timm, R. 1916. Die Moosbesiedelung unserer Steindeiche. Verh. 



natw. Ver. Hamburg. 3. XXIV. p. 1-6. 20 A. 1 K.) 

 Warnstorf, C. 1917. Die europäischen Artgruppen der Gattung Caly- 



pogeia Raddi. (Bryol. Zschr. I. p. 97—114.) 



XVII. Pteridophyten. 

 Cf. IV. Darnell-Smith. 



Berry, E. W. 1918. Notes on the fern srenus Clathropteris. (Bull. Tor- 



rey bot. Club. XLV. p. 279—285. 2 f.) 

 Bicknell, E. P. 1918. The ferns and flowering plants of Nantucket. 



XIX. (Bull. Torrey bot. Club. XLV. p. 365—383.) 

 Bower, F. 0. 1918. Hooker Lecture: On the Natural Classification 



of plants, as exemplified in the Filicales. (Journ. Linn. Soc. XLIV. 



p. 107-124.) 

 Maxon, W. R. 1918. A new Anemia (A. Makrinii] from Mexico. 



(Journ. Washington Ac. Sc. VIII. p. 199-200.) 

 M'Lean Thompson, J. 1918. A further contribution to the knowledge 



of Platyzoma microphyllum R. Br. (Trans, r. Soc. Edinburgh. LH. 



p. 157—165. 17 f.) 

 M'Lean Thompson, J. 1918. The anatomy and affinity of Stromatopteris 



moniliformis, Mett. (Trans, r. Soc. Edinburgh. LH. p. 133 — 156. fs. 4 pl.) 



XYIII. Floristik, Geographie und Systematik der Phanerogamen. 

 Cf. IV. Bailey and Thompson. XVII. Bicknell. 



Abrams, L. R. 1918. A phytogeographic and taxonomic study of 



the southern California trees and shrubs. (Bull. New York bot. 



Gard. VI. p. 300—485. ill.) 

 Adamson, R. S. 1918. On the relationships of some associations of 



the Southern Pennines. (Journ. of Ecol. VI. p. 97 — 109.) 

 Angli, J. 1918. La „Araucaria araucana" (Mol.) Koch (= „Araucaria 



imbricata" R. Pav.) y su resina sus relaciones con las demäs 



coniferas. (Bol. Ac. nacion. Cienc. Cördoba [Rep. Arg.J. XXIII. p. 



1-84. ill.) 

 Anonymus. 1918. Diagnoses africanae. LXXI. (Kew. Bull. 1918. p. 



202—207.) 

 Anonymus. 1918. Novitates Africanae. (Ann. Bolus Herbar. II. 



p. 153-162.) 

 Beauverd, G, 1918. Esquisse synecologique comparative de deux 



marais des environs de Baulmes. (Bull. Soc. vaudoise Sc. nat. 



LIL p. 17—93) 

 Bews, J. W. 1918. South African phytogeography. (S. afric. geogr. 



Journ. I. p. 11—22.) 

 Blake, S. F. 1918. A revision of the genus Viguiera. (Contr. Gray 



Herbar. Harvard Univ. N. S. LIV. p. 1-205. 3 pl.) 

 Bornmüller, J. 1918. Notizen zur Flora Oberfrankens, nebst einigen 



Bemerkungen über Bastarde und eine neue Form von Polystichum 



Lonchitis (L.) Roth, im Alpengebiet. (Beih. bot. Cbl. 2. XXXVI. p. 



183-199. 1 T.) 

 BornmüHer, J. 1918. Revisions-Ergebnisse einiger orientalischer und 



zentralasiatischer Arten der Gattung Echinops. (Beih. bot. Cbl. 



2. XXXVI. p. 200—228.) 

 Bouget, J. 1918. De l'infiuence des neiges sur la repartition des 



differents v^getaux ä raeme altitude dans les zones elevees des 



Pyrenees. (Rev. g£n. Bot. XXX. p. 305—320.) 



