66 Transactions British Mycological Society. 



and has been found abundantly in September on the leaves of 

 black poplar. 



49. D. squamulosum Fr. Even this — perhaps the commonest 

 of the Mycetozoa — is by no means always easily recognised, 

 by reason of its extraordinary variety of forms. A completely 

 limeless form was not unfrequent on bramble in March 1922 

 and near by, on old oak leaves, the same species appeared in 

 another disguise, as flat cakes with a blue metallic sporangial 

 wall. Quite recently I have noticed it maturing from large 

 quantities of dull pinkish red plasmodium. A slender ridge 

 has sometimes been seen on the spore wall. 



50. D. anellus Morg. Only twice have I come across this 

 species; once in October on poplar leaves among faggots, and 

 once in March on dead holly leaves. This latter was a limeless 

 form. It has also been recorded at Witley on rotting sycamore 

 leaves. 



*5i. D. crustaceum Fr, has so far only been gathered once 

 in Surrey — in April 1922 — in a heap of dead leaves, selecting 

 as its habitat pine needles, oak leaves and the foliage of Sequoia 

 gigantea. The capillitium was frequently net-like as in the 

 following species. 



52. Mucilago spongiosa Morg. This common species should, 

 I think, be described as common locally, or periodically, as it 

 has only once been found in Surrey, as far back as 1898, when 

 Miss Margaret Phear collected it at Witley in November. 



*53- Colloderma oculatum G. Lister is best sought for in wet 

 weather, when its opaque white or yellowish plasmodium shines 

 out conspicuously from among darker surroundings. The mature 

 sporangia, when of a dull dark colour, are easily passed un- 

 noticed; but sometimes they are shining silver grey, or even 

 brilliantly coloured in kingfisher blue. A favourite habitat of 

 this species is on the moss Campylopus pyriformis, but it is 

 also frequent on the soil between the roots of old pine stumps; 

 on moss, liverworts and algae on pine branches, and even on 

 bare spruce bark. On one occasion I found it on a dead leaf of 

 Spanish chestnut. The spores are often ovoid and very variable 

 in size. The capillitium threads have a dark purple brown 

 interior with a hyaline sheath. The sporangia grow singly or in 

 small clusters of three or four, or in good growths, of seven to 

 nine. It has been recorded for every month in the year, but is 

 especially prevalent in autumn. 



54. Stemonitis fusca Roth, is common throughout the year 

 especially on coniferous wood. It is one of the very few species 

 that I have met with on Rhododendron wood. 



var. flaccida Lister has appeared in autumn and winter on 

 sycamore stumps. 



