Bryophyten. 313 



lighted stagnant shallow water, which the Sphagnaceae require, 

 occur at only a few places in Essex, namely where Bagshot 

 Sand or Glacial Gravel overlies the impervious ß ou Ide r Clay 

 or London Clay. A. Gepp. 



Gepp, Antony, The dates ofHooker's „British Junge rmanniae" 

 and ^Musci Exotici". (Journal of Botany. XLIV. 1906. p. 176 

 — 178.) 



The „British Junge rmannieae" was published in 22 parts, each 

 of which cost 7 s : 6d. and contained 4 plates. The list of dates 

 supplied enables the date of publication of any plate or description 

 to be calculated easily. These dates extend from April 1812 to June 

 1816. The „Miisci Exotici" was published in 23 parts, each of which 

 (except part 23) contained 8 plates. The dates of these can be 

 calculated similarly. A. Gepp. 



InghajM, W., New and rare YorkshireMosses and Hepatics. 

 (The Naturalist. No. 593. London. June 1906. p. 187.) 



The author records stations for PhyscomitreUa patens, Weisia 

 mucronata, Bryum murale, and Jungermannia Goulardi, which by 

 some hepaticologists is regarded as a variety of /. sphaerocarpa. 

 J. Goulardi was previously unknown in the British Isles. 



A. Gepp. 



Jaap, Otto, Weitere Beiträge zur Moosflora der Um- 

 gegend von Hamburg. (Verhandl. des Naturw. Vereins in 

 Hamburg. 3. Folge. XIII. 1906. p. 105—151.) 



Eine sehr wichtige Ergänzung zu Verf.s „Beiträge zur Moosflora 

 von Hamburg, 1899", aus welcher folgende Arten als neu für das 

 Gebiet hervorzuheben sind : Marsnpella emurglnata (Ehrh.) Dum., 

 Lophozia alpestrls (Schleich.) Dum., L. Mildeana (Gottsche) Schffn., 

 Sphenolobus exsectus (Schmid.) Steph., Chiloscyphus pallescens 

 (Schrad.) Nees, Cephalozia symbolica (Gottsche) Breidl., Cephalo- 

 ziella pnlchella C. Jens, C. myriantha (Lindb.) Schffn. var. Jaapiana 

 Schffn., Scapania undnlata (L.) Dum.; Sphagnum quinquefarinm 

 (Lindb.) Warnst., Rhacomitrium cataractarum A. Br., Rh. Sudeticnm 

 (Fk.) Br. eur., Brachysieleum polyphyllum (Dicks.) Hsch., Pholia pnl- 

 chella (Hdw.) Lindb., P. lutescens (Limpr.) H. Lindb., Bryum Ruppi- 

 nense Warnst., B. alpinuni Huds., B. Neodamense Itzigs., B. praecox 

 Warnst., B. badium Bruch, Philonotis Osterwaldii Warnst., Fontinalis 

 Kindbergii Ren. et Card., Amblystegium hygrophilum (Jur.) Schpr., 

 Hypnum subaduncum Warnst., Hypnum purpurascens (Schpr.) Limpr. 

 Anhangsweise ist ein Verzeichnis solcher Bryophyten zusammen- 

 gestellt, die noch in Hamburgs Flora zu erwarten sein dürften. 



Geheeb (Freiburg i. Br.). 



Macvicar, Symers M., A revised Key to Hepatics of the Bri- 

 tish Islands. (Eastbourne: Sumfield, 1906. 8". 19 pp.) 



For the benefit of beginners this key is planned largely on super- 

 ficial characters. For instance, a fundamental factor in the grouping 

 of the genera is found in the underleaves, namely in their presence 

 or absence and their relative size as compared with the leaves. 

 Characters drawn from the leaf-cells are rarely employed. Advice 

 is given in the preface as to how specimens ought to be examined, 



