160 SUMMARY OF CUKEENT RESEARCHES RELATING TO 



Lichenolog-ical Notes.*— G-. Einar du Rietz publishes the first of a 

 series of notes and observations on lichens at the botanical museum at 

 Upsala. He draws attention to the Swedish lichen, Peltigera lepidophora, 

 and discusses the question as to whether the excrescences on the upper 

 cortex are cephalodia or of isidiose origin. He contrasts it with Peltigera 

 prsetexta, the thallus lobes of which are densely beset with outgrowths. 



Notes are given on several Cladoiiise, Letharise, and on the Swedish 

 Hypogynmise. 



In a second contribution j he gives notes on some of the rare species- 

 of lichen vegetation of Oland, such as Lecidea festacea, Cladonia glauca^ 

 PJiyska tremulicola, etc. 



Mycetozoa. 



(By A. LoBRAiN Smith, F.L.S.) 



African Mycetozoa. J — ^C. 0. Farquharson and CI. Lister have 

 published an account of African, more particularly Nigerian, mycetozoa 

 collected by the former during a residence in that region. C. 0. 

 Farquharson contributes an account of the country and of the 

 vegetation. Mycetozoa are most frequent in cleared localities on 

 stumps and logs left on the ground, but some grow high up on living 

 palms, Hemitrichia serpula having frequently been found on the bases 

 of the dead outer leaves, PJiysareUa obhnga on the dead female 

 inflorescence, while P. reniforme seemed to be confined to the male. 

 These species were found to be present when the trees were felled. 

 Farquharson comments on the number of familiar British species that 

 grow in Nigeria. Fidigo septica is perhaps the most frequently met 

 with ; Sfemonitifi sphndens also very common in the clearings on the 

 burnt surface of logs. On the other hand, many genera that are 

 common in our temperate regions are w^anting, such as Trichia 

 Badltamia, etc. 



G. Lister contributes the section, dealing with genera and species. 

 She reviews the work previously done on African mycetozoa, and gives 

 a list, of all species recorded from that continent. Those collected by 

 Farquharson are examined and recorded in detail with many interesting 

 biological observations. There are two new species Phymrum digitatum 

 and Diachsea radiata, the latter having also been sent from Ceylon by 

 T. Fetch, the only records so far. 



* Svensk. Bot. Tidsk., ix. No. 4 (1915) pp. 421-31. 

 t Svensk. Bot. Tidsk., x. No. 3 (1916) pp. 471-8. 

 X Journ. Bot., liv. (1916) pp. 121-33 (1 pi.). 



