576 SUMMARY OF CUREENT RESEARCHES RELATING TO 



Vegetation of Tatra Caves.* — A. J. Zmuda has examined syste- 

 matically tlie vegetation of thirteen caves in Tatra and of two in the 

 Karste. The lai'gest nnmber of mosseslire found in caves in which the 

 •diffused light is equal to ttV^- The damper the cave, the richer is it 

 in Cryptogams. The flora is not adversely affected by low temperature 

 provided it is fairly constant Some species of mosses show a variety 

 of elevation between their limit in the open and in caves — for example, 

 Neckera Besseri, 990 m. in the open, 1390 m. in caves. In the fight 

 for existence certain species habituully go under. Acrocarpous species 

 •are often crowded out by pleurocarpous. Many species occur in the 

 cav^es which have not yet been recorded for the region. Several 

 novelties are described. 



Mosses of the Iberian Peninsula. f — P. Merino publishes a list of 

 twenty-seven of the more interesting acrocarpous mosses collected in the 

 Iberian peninsula, and preserved in his herbarium. The determinations 

 have been revised by J. Glowaeki, an Austrian bryologist. Several of 

 these species are new records for both Spain and Portugal, and some for 

 one or other of these countries. Some notes descriptive of structure 

 ■are given. 



Mosses of Borneo.^— H. N. Dixon gives an account of a collection 

 of mosses gathered in Borneo by C. H, Binstead. A striking feature 

 is the peculiar ecological distribution of the genera SyrrMpodon and 

 Culymperes ; some twenty or more species of each occur in Borneo. 

 They are coastal, without being maritime ; nor are they hygrophytic. 

 Some 130 species are enumerated ; and several critical notes on their 

 structure are included. The number of new species described and 

 figured is fourteen, besides new varieties and forms. 



Peruvian Mosses. § — R. S. Williams gives a list of seventy-one 

 Peruvian mosses collected by members of the Yale Expeditions of 1911 

 and 1915. The following six species are new to science, and details 

 of their structure are described and figured : — Leptodontium integri- 

 foJium, GJobulina peruviana, Tortula lacerifolia, Grimmia rivulariopsis, 

 Bryum biforme, Hyyrohypnum peruviense.. 



Thallophyta. 



Algae. 

 (By Mrs. E. S. Gepp.) 



Anomalous Forms of Ceratium hirundinella.H — G. Huber-Pestalozzi 

 has studied the anomalous forms of Ceratium hiritndinella. His results 



» Bull. Acad. Sci. Cracovie, Ser. B, 1915, pp. 121-79. See also Bot. Centralbl., 

 cxxxii. (1916) pp. 221-2. 



t Bol. R. Soc. Espafiola Hist. Nat., xvi. (Madrid, 1916) pp. 270-6. 

 : Journ. Linn. Soc, xliii. (1916) pp. 291-323 (2 pis.). 

 § Bull. Torrey Bot. Club, xliii. (1916) pp. 323-34 (4 pis.). 

 11 Verb. Scbweiz. Naturf. Gesellscb. 1914, pp. 191-3. 



