74 Transactions British Mycological Society. 



rotten lime wood and ivy leaves, and also in May, July and 

 from October to December. The long stalked almost black 

 specimens are more frequent on coniferous wood. 



var. flavicoma Lister is a very instructive and interesting 

 variety that makes two distinct appearances in the year. The 

 spring variety is more abundant and robust than that occurring 

 in autumn. The sporangia are sometimes mottled with dark 

 spots, nearly always sessile, scattered or in small clusters. The 

 Plasmodium is watery white. The spores measure normally 

 ii-i2)u, and are warted, but not unfrequently they vary from 

 12-20 )u.. The sporangium wall is mottled with granular refuse 

 matter. The elater points taper from 20-40 /x,. This variety is 

 very abundant in April and has been gathered on leaves of 

 beech, ivy, lime, oak, holly, beech mast, oats and twigs of gorse. 



The autumn growth is usually a very tiny solitary sporangium. 

 It has occurred on pine needles and leaves of yew, laurel and 

 rhododendron. Very minute sporangia, invisible to the naked 

 eye, were detected in November on dead leaves of sycamore, 

 along the ribs on the underside of the leaf, 



var. munda Lister. Laurel bark and old bramble stems pro- 

 vide the chief habitats of this variety which is frequently found 

 in the winter months. 



ti04. T. Botrytis Pers. var. cerifera G. Lister was found at 

 Horsley in October and at Weybridge in February and Novem- 

 ber, always on coniferous wood. Sometimes the sporangia are 

 pale brown without much wax, at other times very dark, almost 

 black, with thick deposits of wax. 



fios. T . floriformis G. Lister. The only Surrey record of this 

 uncommon species was made in October 1922 at Virginia Water, 

 where it was found mixed up in delightful confusion with 

 Hemitrichia Vesparium, to which it bears a very striking super- 

 ficial resemblance. 



f 106. Oligonema nitens Rost. By no means unfrequent if one 

 looks for it in the right habitat. The chief haunt of this species 

 is wood occasionally submerged or waterlogged, but it is not 

 averse to leaves. In Weybridge it has been found no less than 

 twelve times. It was first reported for the county at Royal 

 Common, where it occurred on dead oak leaves in the bed of 

 a dry pond. It has since been found in every month of the year 

 with the exception of January, March and April, sometimes on 

 sodden branches of silver birch, sometimes on elder, but more 

 frequently on alder, spreading thence for a square inch or more 

 on to fresh grass. In October 1922 a great quantity appeared 

 in a damp ditch on alder leaves in spite of the presence of plenty 

 of rotting branches all round it. Some irregular developments 

 show quite long elaters and monstrous spores completely 



