

(97) 



Warnstorf, C. Die europaischen Artgruppen der Gattung Calypogeia Kaddi. (Bryol. 

 Zeitschr. I [1917], p. 97—114.) 



Watson, W. Sphagna, their habitats, adaptations and associates. (Ann. of Bot. XXXI 

 [1918], p. 535—551, 5 Fig.) 



Wiemeyer, B. Das Vorkommen von Cinclidotus aquaticus (Jacquin, als Hypnum 

 aquaticum) Bryol eur. in Westfalen. (Jahresber. westfal. Prov.-Ver. f. Wissensch. 

 u. Kunst XLV [1917], p. 38—41, 1 Fig.) 



Williams, R. S. Some farthest north lichens and mosses of the Peary arctic expedition 

 to Grant Land in 1906. (Torreya XVIII [1918], p. 210—211.) 



Woodburn, W. L. Cytological phenomena connected with spermatogenesis in liver- 

 worts and mosses. (Transact. Illinois Acad. Sci. IX [1917], p. 138—143.) 



VII. Pteridophyten. 



Alderwerelt van Rosenburgh, C. R. W. K. New or interesting Malayan ferns. 10. 

 (Bull. Jard. Bot. Buitenzorg 2, 28, p. 1—50.) 



— Two critical fern genera. (Ibidem p. 57 — 64.) 



— Two new fern genera. (Ibidem p. 65 — 66.) 



Beck, R. Alethopteris Pfeilstickeri, ein neuer Farn aus dem Oberkarbon von Lugau- 



Olsnitz. (Sitzber. u. Abhandl. Xaturw. Ges. „Isis" in Dresden [1917] 1918, 



p. 23—28, 3 Abb. i. Text.) 

 Benedict, R. C. Two serious fern pests. (Americ. Fern Journ. VII [1918], p. 122—124.) 

 Berry, E. W. Notes on the fern genus Clathropteris. (Bull. Torr. Bot. Club XLV 



[19181, p. 279—285, 2 Fig.) 

 Bicknell, E. P. The ferns and flowering plants of Nantucket. XIX. (Bull. Torrey 



Bot. Club XLV [1918], p. 365—383) 

 Blake, S. F. Lycopodium sabinaefolium Willd. var. Sharonense (Blake) comb. nov. 



(Rhodora XX [1918], p. 60.) 

 Bornmiiller, J. Notizen zur Flora Oberfrankens nebst einigen Bemerkungen iiber 



Bastarde und eine neue Form von Polystichum Lonchitis (L.) Roth im Alpen- 



gebiet. (Beihefte z. Bot. Central bl. XXXVI [1918], 2. Abt., p. 183—199.) 



Braun-BIanquet, Josias und Hatz, Christian. Materialien zur Biindnerflora. (Jahresber. 



Naturforsch. Gesellsch. Graubundens N. F. LVII [1916/17], Chur 1917, p. 39—53.) 

 Bower, F. 0. Studies in the phylogenij of the Filicaies. VII. The Pteroideae. (Ann. 



of Bot. XXXII [1918], p. 1—68.) 

 — Hooker Lecture: On the Natural Classification of plants, as exemplified in 



the Filicaies. (Journ. Linn. Soc. London XLIV [1918], p. 107—124.) 

 Braun-Blanquet, Josias. Schedae ad floram raeticam exsiccatam. Lief. 1 — 100 



(1918). (Jahresber. Xaturf. Ges. Graubundens N. F. LVIII [1917/18] 1918, 



p. 69—100.) 

 Brown, E. W. Regeneration in Phegopteris polypodioides. (Bull. Torrey Bot. Club 



XLV [1918], p. 391—397.) 

 Bruchmann, H. Zur Entwicklung des Keimes artikulater Selaginellen. (Zeitschr. 



f. Botanik XI [1919], p. 39—52, Abb. 1—17.) 

 Christensen, C. Maxonia, a new genus of tropical American ferns. (Smithsonian. 



Misc. Coll. LXVI [1916], p. 1—4.) 

 — - Index Filicum. Supplement preliminaire pour les annees 1913 — 1916. (Copen- 



hague 1917, 60 pp. 8°. ) 

 Copeland, E. B. The genus Loxogramme. (Philipp. Journ. Sci. C. Botany XI [1916], 



p. 43—48, PI. I— IV.) 



Hedwigia Band LX1. 7 



