NOTES ON SWISS MYCETOZOA 97 



other sporangia again have discoid scales consisting of closely 

 compacted crystals scattered over the membranous or slightly 

 cartilaginous wall. The last form cannot well be distinguished 

 from L. Carestianum var. Chailletii (a variety in which the 

 sporangium- wall is less stout than in the typical form). The dark 

 rigid capillitium and dark rough spores, 12 to 13 yut diam., are alike 

 in both species. Similar intermediate forms were collected by 

 Herr 0. Jaap, on old stalks of Cirsium, at the Furka Pass, in 

 June, 1910, and appear as No. 93 in the fifth series of his pub- 

 lished "Exsiccata," under the name Lepidoderma Carestianum. 

 The sporangia in these, as in the Mivrren specimens, sometimes 

 have convex orange-coloured colurnellae ; this form has been 

 described by M. Meylan as var. flavescens of L. Carestianum (in 

 Bull. Soc. Vaud. xliv. 292). 



Mucilago spongiosa (Leysser) Morgan. R., H. 



+Leptoderma iridescens G. Lister in Journ. Bot. 1913, 

 tab. 521, figs. 1, la to c. M. Two groups of the sessile iridescent 

 sporangia were found on sticks in a spruce wood on Sept. 1st. 

 This is the first Swiss record. Since then M. Meylan has also 

 found the species in the Jura Mountains ; it has been recorded 

 elsewhere from Bedfordshire and the North of Scotland. 



fCoLLODERMA oculatum (Lippert) G. Lister. A few small 

 olive-brown sporangia were found associated with Licea pusilla 

 Schrad. and Trichia Botrytis Pers. on old fencing in a spruce 

 wood on Sept. 1st. A few weeks later M. Meylan obtained a con- 

 siderable number of sporangia on dead wood at La Vaux, in the 

 Jura Mts. ; some were glossy olive-brown and had their walls 

 completely invested with a layer of refuse matter and mucilage ; 

 other sporangia were purple-brown and shining with iridescent 

 colours ; in these the upper walls were entirely free from refuse 

 matter. This species was first obtained in 1892 by Christian 

 Lippert on dead wood brought from the Tyrol ; within the last 

 two years it has been found also in the North of Scotland, in 

 Epping Forest, Essex, in Portugal, Japan, and New England. 



Stemonitis fusca Eoth. L., H. Two gatherings made in the 

 Gutsch woods above Lucerne have rather ill-developed sporangia 

 and spores marked with a continuous reticulation of shallow 

 raised bands ; they therefore belong to the var. trechispora ; this 

 style of spore-marking seems to be often associated with imper- 

 fectly formed capillitium in S. fusca. In the Hohfluh gathering 

 the sporangia are stunted and barely 2 mm. high ; the spores are 

 marked with typical close spinulose reticulation. 



S. ferruginea Ehrenb. L. 



Comatricha nigra (Pers.) Schroeter. L., H., M. 



Comatricha pulchella (Bab.) Bost. var. tenerrima. M. On 

 decaying scapes of Adenostyles alpinum in spruce woods. In one 

 specimen the pale reddish-brown capillitium threads are combined 

 to form a complete though uneven net on the surface of the 

 sporangium ; in another the capillitium threads are less flexuose, 

 and end in free tips on the surface; the two specimens are 



