108 THE JOURNAL OF BOTANY 



recorded from Yorkshire, Shropshire, Worcestershire, Somerset, Devon, 

 and from the south of Scotland ; also from the -Tyrol, Switzerland, 

 Portngiil, New South Wales, Japan, and New Hampshire. 



Stemoxttis hyperopta Meylan in Bull. Soc. Vaud. Sc. Nat. lii. 

 p. 97. 1918, syn. Comatricha typlioides Rost. var. heterospora Ilex. It 

 has been found from many years' experience that this form is remark- 

 ably constant. It differs from C. typlioides in the rosy-lilac colour 

 of the sporangia, in their more clustered habit, in the smoother and 

 more complete surface-net of the capillitium, and in the spores 

 showing small patches of reticulation on their surface when highly 

 magnified. It may seem a great change not only to make this form 

 a distinct species, but to place it in another genus, but in reality it 

 is not so, for Comatricha is only distinguished from Stemouitis by 

 the more scattered habit of the sporangia and by the absence of a 

 smootli surface-net to the capillitium, and it is for convenience, rather 

 than as a natuml arrangement, that the genus is retained at all. 



Comatricha cornea G. Lister & Cran in Journ. Bot. 1917, 

 p. 121, pi. »548. fig. 1. First discovered by the Rev. W. Cran near 

 Skene in June 1913, and again in 1914 and 1916. M. Me3dan 

 writes that he has found this minute S}>ecies in the Jura Mountains. 



C. FiMBRiATA G. Lister & Cran in Journ. Bot. 1917, p. 122, 

 pi. 548. fig. 2. First found by Mr. Raymond Finlayson in Wanstead 

 Park, Essex, in November 1913 ; since obtained by Mr. Cran near 

 Skene, on Hind Head, Surrey, by myself, and twice by Mr. H. J. 

 Howard in Norfolk. 



C. MiCROSPORA G. Lister: syn. C. typhoides var. microspora 

 Lister. Repeated gatherings f)i'C)ve that this is a constant form 

 worthy of specific rank ; the closely flexuose character of the surface- 

 net of the capillitium and the very small spores distinguish it from 

 C. typhoides. It has been found in Devon, Surrey, Essex, and Nor- 

 folk, and be3^ond Britain in Holstein, near Berlin, and in Ohio. 



C. TENERRIMA (Curtis) G. Lister : syn. C. pidchella Rost. var. 

 tenerrima Lister. It is with some hesitation that the specific rank 

 given to this form by Curtis is once more adopted. When typically 

 developed C. tenerrima differs strikingly from C. pulchella in having 

 pale red narrowly ovoid sporangia on long slender stalks, instead of 

 reddish -brown broadly ovoid sporangia on short stalks, but it must be 

 acknowledged that forms intermediate in character sometimes occur. 



Lamproderma violaceum (Fr.) Rost. var. dehile G. Lister & 

 Howard in Journ. Bot. 1919, p. 25, pi. 552. fig. 1. Found by 

 Mr. H. J. Howard in April and May 1918. 



L. atrosporum Meylan var. anylicum G. Lister & Howard in 

 Journ. Bot. 1919, p. 27, pi. 552. fig. 2. Found with the preceding on 

 the same leaf -heaps. 



L. INSESSUM G. Lister in Trans. Brit. Mj^col. Soc. 1912-13, 

 p. 41, pi. 1. fig. 2. Found only once on lichen at Forres, Elginshire, 

 Sept. 1912. 



Clastoderma Deraryanum Blytt. This minute species was 

 discovered for the first time in Britain by Mr. N. G. Hadden at 

 Porlock, Somerset, December 1918, on old gorse stems ; when found 



