6o Transactions British Mycological Society. 



*3. B. utricular is Berk. A very common species. In March it 

 was noticed on rotting willow slips, and from April to November 

 in its classic haunt on leathery fungi. The plasmodium has also 

 been observed among poplar logs feeding on Pleurotus ostreatus. 

 4. B. nitens Berk. A fine healthy growth of this species was 

 found in May 1920 on a fallen oak branch, in the grounds of the 

 Royal Horticultural Society's Gardens at Wisley. At first 

 glance it could hardly be distinguished from the golden yellow 

 lichen on which it was growing. 



♦5. B. macrocarpa Rost. may be met with every year in late 

 autumn. A sturdy stalked form, very like a robust Physarum 

 pusillum, appeared in November 1922 after a month of re- 

 markably low rainfall, on the bark of white poplar logs in the 

 grounds of St George's College, Weybridge. 



|6. B. panicea Rost. occurs frequently throughout the year. 

 It has been recorded in January, March, April, July, August 

 and plentifully in autumn. It would seem to have a preference 

 for poplar logs but often creeps over adjacent leaves, etc. and 

 has also been found on elder and tulip tree {Liriodendron) . 



fy. B. foliicola Lister was first gathered on a lawn near 

 Witley in July 1908. It is not, however, uncommon and has 

 since been found in February and March on beech leaves, on 

 an oak trunk in June, on laurel and poplar sticks in a heap of 

 faggots in October and on poplar and sweet chestnut leaves in 

 November. 



*8. Physarum globuliferum Pers. Although already recorded for 

 Scotland by the Rev. W. Cran it was not obtained in England until 

 September 1922 when a large growth was found in St George's 

 Hills, Weybridge, on the bark of an old pine stump kept moist 

 by overhanging bracken. This clustered form is bigger and has 

 shorter stalks than the elegant American and tropical species. 



f 9. P. viride Pers. Has been found fresh in March on a laurel 

 branch and also on alder and pine in September and October. 

 A growth with sporangia varying from bright yellow to red (var. 

 aurantiaca) was collected by Miss Lister in Richmond Park in 

 August 1892. 



10. P. galbeum Wing. This charming species is by no means 

 of frequent occurrence. It was first recorded for the county at 

 Whitley on dead twdgs in September. It has also been obtained 

 in July, after twelve days of incessant rain, and again in 

 December. On each of these occasions dead bramble stems 

 provided the habitat. 



11. P. nutans Pers. Abundant throughout the year but is 

 most puzzhng in some of its protean forms. 



var. leucophaeum is almost as common between January and 



July. 



