598 SUMMARY OF CURRENT RESEARCHES RELATING TO 



a period of four months until the spores were quite mature, they have 

 been able to study the curious bulbils or tubers of the plant. These 

 bulbils are the swollen ends of long outgrowths emitted near the apex 

 of the thallus and thrust down into the soil, where they maintain the 

 life of the plant through the drought of summer. The species appears 

 to be dioicous. The pedicels of the antheridia are 4-celled in transverse 

 section, and this also is the case probably in all anacrogynous Junger- 

 mannieae, while in all acrogynous Jungermanniese the pedicel is but 

 1-cell thick. This, however, is a character entirely overlooked hitherto 

 by hepaticologists. 



Cephaloziella obtusa.* — C. Douin describes and figures the struc- 

 tural characters of Cephaloziella obtusa Culm., a plant gathered at an alti- 

 tude of about 4300 ft. near Mont Blanc. Douin and Schiffner are about 

 to publish a monograph of the family Cephaloziellace^e, and Douin here 

 reveals some of the constant characters discovered and employed by 

 them for the delimitation of the family, such as the structure of 

 sporogonium-pedicel, the leaves of the gametophyte, the folds of the 

 perianth. The new species, C. obtusa, will be placed in the new genus, 

 Evansia, because of its bracts and propagula. The characters of Dichi' 

 ton and Lophoziella (a new genus) are briefly indicated, and other critical 

 notes are added. P. Culmann appends a postscript and some more 

 figures. 



Pohlia.f — E. Bauer publishes notes on the comparative structure 

 of Pohlia hercynka Warnst. and P. Rothii Broth., with critical remarks 

 by C. Grebe, 0. Warnstorf, and L. Loeske. 



Chionobryum g. n.J — J. Glowacki takes as type of the new genus 

 Ghionobryum the very rare Bryum Venturii De Not., found once in 

 South Tyrol by Yenturi, and again in Tyrol by Glowacki in 1912. It 

 difl^ers so completely in the structure of its leaf-nerve from the type 

 found in Bryum that Glowacki is of the same opinion that the species 

 cannot be left in Bryum. The capsule is still unknown. 



Hyophila styriaca.§ — J. Glowacki describes and figures a new 

 moss-species from Styria, Hyophila styriaca. It is distinguished from 

 Didymodon by its shorter leaf-nerve and by the cell-structure of the 

 basal part of the leaves. 



Riccia Frostii in Hungary. || — I. Gyorffy, in reporting on the 

 occurrence of certain species of Riccia at Mako in Hungary, records, on 

 the authority of V. Schiffner, R. Frostii Austin, an American species 

 which has been found in Lower Austria and Russia. He points out 

 the structural characters by which this very rare species may be recog- 

 nized. F. Stephani is inclined to regard the Russian plant as distinct, 

 and has named it R. Beckeriana. 



* Rev. Bryolog., xl. (1913) pp. 65-71 (2 pis.). 



t Oesterr. Bot. Zeitschr., Ixiii. (1913) pp. 106-9. 



X Oesterr. Bot. Zeitschr., Ixiii. (1913) p. 279. 



§ Oesterr. Bot. Zeitschr., Ixiii. (1913) pp. 405-6 (figs.). 



II Magyar Bot. Lapok, xii. (1913) pp. 28-30. 



