216 SUMMARY OF CURRENT RESEARCHES RELATING TO 



treated. Experiments were undertaken to test the resistance of Ghryso- 

 pMyctis sporangia to frost ; their germinating power was not destroyed 

 after an exposure to temperatures varying from 5° to 8° C. for four hours. 



Mycorhiza of Sempervivum.* — Franz Zach describes the formation 

 of fascicles of short roots in Sempervivum which recall the appearance of 

 witches' brooms. He found in the cells of these roots the slender hyphaj 

 of an endophytic mycorhiza, and he found also the stouter mycelium of 

 a Hyphomycete. Whether the short roots are caused by the mycor- 

 hiza or whether they are an adaptation to xerophytic conditions the 

 author does not say, as experimental research would be necessary to 

 determine this. 



Almeida, Jose Verissimo d' & Manoel de Souza da Gamaka — Coii- 

 tributiones ad Mycofloram Lusitaniae. (Contributions to the fungus-flora of 

 Lusitania.) 



[Several new species are published in the list, which numbers 500 specimens.] 



Bol. Soc. Brot., xxiv. (1908-9) pp. 150-213. 



Bittman, Otto— Die holzztorenden und holzzersetzenden parasitaren, sowie sa- 

 propb.ytiscb.en Pilze unserer Laubhblzer im Wald und auf den Lagerplatzen. 

 (Wood-destroying parasites, and the saprophytic fungi in forest and timber- 

 yards.) Oesterr. Forst, und Jagd.-Zeit., xxvii. (1909) pp. 74-6, 84-5, 95-G, 

 and 135-6 (5 figs.). See also Hedwigia, Beibl., xlix. (1909) p. 26. 



Bloomfield, E. M., & E. W. Swantok — Sussex Fungi: Preliminary List. 

 [A list of Hymenomycetes and Gasteromycetes found in the county.] 



Hastings and Sussex Naturalist, i. (1909) pp. 131-52 (4 pis.). 



Burlingham, G. S. — Lactarise of North America. Fasc. i.-ii. 



[Habitat and distribution in America are given.] 



Mycologia, ii. (1910) pp. 27-36. 



Cruchet, Denis — Micromycetes nouveaux. (New Micromycetes.) 

 [Several new species from Valais.] 



Bull. Soc. Valid. Sci. Nat., xliv. (1909) pp. 469-75 (3 figs.). 



Fischer, Hugo — Ueber Coremium arbuscula sp. n. 



[Diagnosis and description of the new species, with notes on the genus.] 



Bcr. Detdsch. Bot, Gesell, xxvii. (1909) pp. 502-4 (2 figs. ). 



Knischewsky, O. — Tagesringe bei Penicillium lnteum. 



[Culture experiments which proved that ring-formation in fungal cultures 

 were due to effects of light.] 



Landw. Jalirbilchcr, xxxviii. (1909) p. 341. 

 See alsoJBo*. Centralbl, cxiii. (1910) pp. 120-1. 



Knoll, F. — Eine neue Art der Gattung Coprinus. (A new species of the genus 

 Coprimes.) 



[The fungus Coprimes stiriacus sp. n. grew in hot-houses and in the open ; 

 it is allied to C. ■psexidoplicatilis.'] 



Oesterr. Bot. Zeitschr. Wien, lix. (1909) pp. 129-33 (2 figs.). 

 See also Hedivigia. Beibl., xlix. (1909) p. 64. 



Korpatchewska, Irene— Sur le Dimorphisme physiologique de quelques Mu- 

 corinees Heterothalliques. (Physiological dimorphism of some heterothallic 

 Mucorini.) 



[The difference between the two sexes is apparent in their chemical be- 

 haviour (chimisme) and in their growth.] 



Bull. Soc. Bot. Genive, ser. 2, i. pp. 317-51(1 pi. and 4 figs.). 



SB. Akad. Wiss. Math.-Nat. Kl., cxviii. (1909) pp. 185-200 (3 pis. and 4 figs.). 



