300 SUMMARY OF CURRENT RESEARCHES RELATING TO 



may find their solution in this study of the genera from the spore 

 upwards, and that bryology will also gain in interest from points of 

 view other than systematic. 



Annulus of Tortella cgespitosa.* — E. J. Hill gives a resume of 

 the statements made in the best books on European and North American 

 mosses as to the presence or absence of an annulus around the peristome 

 of Tortella csespitosa. And his observations show that it was the 

 fugitive nature of the annulus which led to its escaping the notice of 

 such keen observers as Schimper, Sullivant, etc. 



Mite's Eg-gs in Moss-capsule.f — F. J. Keeley describes and figures 

 the occurrence of the eggs of a mite in old capsules of Orthotrkhum 

 pus ilium. The eggs were oval and transparent, and the moss-spores 

 adhered to their glutinous surface. And the capsules had the appear- 

 ance of containing gigantic oval spores likely to deceive the unwary. 



Moss Washer. I — H. S. Jewett describes and figures a simple sieve 

 for washing from mosses the earth and grit, which otherwise is not 

 easily removed without injury to the specimens. It consists of a 

 bevelled wood frame, to which is attached a square of copper gauze, 

 with fourteen meshes to the inch. For the most minute mosses a much 

 finer screen is desirable. He also describes a suitable nozzle for spraying 

 the water upon the plants. 



Calymperopsis,§ — M. Fleischer publishes detailed descriptions and 

 coloured figures of some rare and new mosses from the Malay Archi- 

 pelago, namely : Fissidens (3 species), Schist omitrium (1), Syrrhopodon 

 (1), Calym2Jeropsis g. n. (1), Gahjmyeres (1), Leptodontium{l). Calym- 

 peropsis was originally a section of Syrrhopodon proposed by C. Miiller, 

 and is now raised to generic rank by Fleischer. By leaf-structure, 

 calyptra and peristome, it is distinct from Syrrhopodon, and it takes 

 8 species from the latter genus. 



Husnotiella.|| — R. S. Williams discusses Cardot's Pottiaceous genus 

 Husnotiella, founded upon Mexican plants collected by Pringle and 

 others. Two species, H. revoluta and H. Palmeri were set up by Cardot 

 in 1909-10. These Williams thinks to be conspecific : and the genus 

 he is strongly of opinion should be merged in Didymodon. So he 

 proposes the new combination D. revolutus to embrace the genus with 

 its two former species. 



Critical Forms of Riccia.lf — V. Schiffner has obtained new material 

 which enables him to clear up several errors in the identity of some 

 species of Riccia. A plant, which has been known in herbaria under 

 various names, from Lower Austria, is here described as a new variety, 



* Bryologist, xvi. (1913) pp. 17-18. 

 t Bryologist, xvi. (1913) pp. 18-19 (1 pL). 

 X Bryologist, xvi. (1913) pp. 25-7. 



§ Bibliotheca Botanica, Heft 80. Stuttgart : Schweizerbart (1913) 11 pp. 

 (3 col. and 4 uncol. pis.). 



;| Bryologist, xvi. (1913) p. 25 \ Hedwigia, liii. (1912) pp. 36-40. 



