40 Botanisches Centralblatt. 



Jennings, 0. E. 1918. Certain organic substances assimilated by 



Ceratodon purpureus, [Short reviewj. (Bryologist. XXL p. 86.) 

 Jennings, 0. E. 1918, Notes on the mosses of northwestern Ontario. 



I. Sphagnum. (Bryologist. XXI. p. 69—78. 1 pl. 1 f.) 

 Machado, A. 1915. A idea de especie em briologia. (Ann. Sc. Ac. 



polytechn. Porto. X. p. 116—118.) 

 Machado, A. 1917. Uma Pottia nova do Algarve. (Ann. sc. Ac. 



polytechn. Porto. XII. p. 51—52. 6 f.) 



XVn. Pteridophyten. 



Alderwerelt van Rosenburgh, C. R. W. K. van 1918. New or interesting 



Malayan ferns. 10. (Bull. Jard. bot. Buitenzorg. 2. 28. p. 1—56.) 

 Alderwerelt van Rosenburgh, C. R. W. K. van 1918. Two critical fern 



genera. (Bull. Jard. bot. Buitenzorg. 2. 28. p, 57—64.) 

 Alderwerelt van Rosenburgh, C. R. W. K. van 1918. Two new fern 



genera, (Bull. Jard. bot. Buitenzorg. 2. 28. p 65—66.) 

 Blake, S. P. 1918. Lycopodium sabinaefolium Willd. var. Sharonense 



(Blake) comb. nov. (Rhodora. XX. p. 60.) [A new ifame for L. 



tristachyum sharonense Blake. — Trelease.] 

 Day, M. A. 1918. Dates of Eaton's Ferns of North America. (Rhodora. 



XX. p. 74—75.) 



Fernald, M. L. 1918. The american representatives of'Equisetum 



sylvaticum. (Rhodora. XX. p. 129—131.) 

 Maxon, W. R. 1918. A new Polystichum [P. Dudleyi] from California. 



(Journ. Washington Ac. Sc. VIII. p. 620-622.) 

 Maxon, W. R. 1918. The American ränge of Botrychium lanceolatum. 



(Rhodora. XX. p. 19.) 

 Maxon, W. R. 1918. The lip-ferns of the southwestern United States 



related to Cheilanthes myriophvUa. (Proc. biol. Soc. Washington, 



XXXI. p. 139—152.) 



XVIIl. Floristik, Geographie und Systematik der Phanerogamen. 



Anonymus. 1918. China's trees and ours strikingly alike. (Journ. of 

 Heredity. IX. p. 272—281. f. 9—15.). 



Anonymus. 1918. Itinera Herteriana. I. (Rep. Spec. nov. XV. p. 

 373-381.) 



Ashe, W. W. 1918. Additions to the arborescent flora of North 

 Carolina. (Journ. Elisha Mitchell sc. Soc. XXXIV. p. 130—140.) 



Ashe, W. W. 1918. Notes on Betula. (Rhodora. XX. p. 63—64.) 

 [Contains as new Betula lenta über. — Trelease.] 



Ashe, W. W. 1918. Notes on trees and shrubs. (Bull. Charleston 

 Mus. XIV. p. 29-32.) 



Ball. 1917. Beobachtungen und Mitteilungen von meinem Sommer- 

 aufenthalt in Oliva während der Jahre 1915 und 1916. (Ber. 

 westpreuss. bot.-zool. Ver. XXXIX. p. 83—90. 2 A. Mit Nach- 

 trag, p. 97.) 



Berry, E. W. 1918. The history of the linden and ash. (Plant World. 



XXI. p. 163—175. 2 f.) 



Blake. S. F. 1918. A variety of Smilax glauca. (Rhodora. XX. p. 



78-80.) 

 Blake, S. F. 1918. Notes on the Clayton herbarium. (Rhodora. XX. 



p. 21—28. 5 f. p. 48—54, 65-73. 3 f.) 

 Blake, S. F. 1918. Notes on the flora of New Brunswick. (Rhodora. 



XX. p. 101—107.) 

 Blake, S. F. 1918. On the names of some species of Viburnum. 



(Rhodora. XX. p. 11 — 15.) 



