ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 575 



chyma has disappeared. The superficial tissue is, however, sufficientlj 

 well preserved to allow of determination. The layer of external cells 

 coarsely resembles an epidermis. On it are inserted here and there 

 rhizoids. All the transverse walls, except a few at the base, are very 

 regularly and clearly oblique. This peculiarity characterizes the 

 present-day rhizoids of the Muscinese. The internal stratum consists 

 of larger, more regular cells. The presence of Muscites Bertrandi in 

 the Siephanien of Sainte Etienne helps to support the determination of 

 certain vegetable imprints in the Stephanien at Commentry, which 

 Renault and Zeiller have attributed to Muscites polytrichaceus. 



Trichostomum Hammerschmidii.* — A. Hammerschmid describes 

 thickenings on the wall of the capsule in Trichostomum Hammerschmidii, 

 Didymodon ruhellus, and Barbula fallax. In many cells of the epidermis 

 of the capsule he noticed drops of oil in places where there was no 

 thickening of the outer membrane. The habitat was shady and ver 

 damp. Evidently the mosses wished to protect themselves from thv 

 excessive damp, and formed oil in the epidermal cells in order to drive 

 out the water. When this object has been attained, the superfluous 

 oil oozes out and hardens on the surface, forming globular thickenings. 

 In dry seasons no oil is to be seen. 



Hungarian Bryophyta.t — I. Gyorffy and M. Peterfi publish critical 

 notes and figures in connexion with the " Exsiccatte of Hungarian 

 Bryophytes, edited by the Botanical Section of the National Ti-an- 

 sylvanian Museum." The authors remark on the extreme difficulty of 

 obtaining the earlier Hungarian Exsiccatje, issued by Fuss, Barth,. 

 Graschik respectively. The publication here in question is only 

 published in thirty examples. From the notes on the first volume, the 

 following details may be mentioned : Glevea hyalina Lindb. is much 

 more rare in the region than Saateria alpina Nees, or Peltolepis grandis 

 Lindb. A minute description is given of Bucegia romanica Rad., which 

 has also been found in North America by Brinkman. Two forms of 

 Molendoa Sendtneriana occur — f . lucifuga in deep, easily divided tufts ; 

 f. lucigeaa in small, more compact tufts. The European Schistidiea3 are 

 all very closely related. Schistidium brunnescens Limpr. is regarded as 

 allied to S. astrofascum Limpr., not to S. apocarpum, S. confertiim, 

 S. grncile. S. apocarpum var. intercedens Schiffn. equals *S'. hrunnescens, 

 and is not an intermediate form. At present no intermediate form is 

 known between S. brunnescens and *S'. astrofuscum. Grimmia anodon is 

 regarded as a Grimmia, not a Schistidium. Sphfchn um sphsericwn occavs 

 plentifully in the Tatra over 20(»0 m. In lower levels S. ampullaceum 

 is also common. Dichelyma falcatum Hedw. is found fruiting in many 

 localities in the lakes of the Restyezat Mountains. Details of ana- 

 tomical structure are represented in the plates. 



* Mit. Bayer. Bot. Ges. Miinchen, iii. (1915) pp. 215-16. See also Bot. Cen- 

 tralbl., cxxxii. (1916) p. 141. 



t Bot. Muzeumi Piisetek, i. (Koloszvar, 1916) pp. 10-73 (pis.). See also Bot. 

 Centralbl., cxxxii. (1916) pp. 269-70. 



