102 THE JOURNAL OF ROTANY 



S. HERBATiCA Peck. On a spruce log, weathered. 



CoMATRiCHA NIGRA (Pers.) Schrad. Fairly abundant on fallen 

 spruce boughs. 



C. TYPHOiDEs (Bull.) Eost. var. heterospora Eex. On a 

 spruce stump. 



Lamproderma violaceum (Fr.) Eost. var. Caresti-e. Eather 

 abundant on and inside hollow Cirsmm scapes. The sporangia are 

 all shortly stalked, some are globose, others are ovoid; in one 

 group of sporangia the sporangium-walls may either persist in 

 large flakes, or break up into fragments adhering to the tips 

 of the capillitium : the capillitium forms a dense intricate net- 

 work, and is purplish-black except at the extreme tips, which are 

 colourless ; the spores are very minutely spinulose and either very 

 dark grey, slightly pale on one side, 11-5 to 14 /x diam. ; or, in one 

 gathering, they are pale grey, 10 to 12 [i. These specimens differ, 

 M. Meylan tells me, from his L. atrosporum by the capillitium 

 being too dense ; in L. atrosporum the spores can be freed from 

 the sporangia at a breath. 



Enerthenema papillatum (Pers.) Eost. On decaying stumps. 



Cribraria aurantiaca Schrad. On rotting spruce logs. 



C. MACROCARPA Schrad. Abundant. On one tall stump the 

 sporangia extended over an area of several square feet, but were 

 old and mouldy. 



C. purpurea Schrad. Found on the same stump as the largo 

 growth of G. macrocarpa. The sporangia measure about 3 mm. 

 in total height , they are old, and have turned a dull crimson. A 

 similar change from the typical reddish-purple colour to crimson 

 has taken place in a few sporangia of a large gathering kindly sent 

 me from the Jura Mountains by M. Meylan. 



C. RUBiGiNOSA Fries. A fine but weathered development was 

 found on a spruce stump. The sporangia measure from 3 to 

 3'5 mm. in total height : the deep cups are marked below with 

 numerous, close-set oblique or curved lines of thickening, and 

 above with a close reticulation ; the sporangium-walls seem to be 

 persistent throughout. In Mycetozoa, ed. 2, p. 177, the specimen 

 from Berne, quoted under this species, should be referred to 

 M. Meylan's new species C. femiginea.--' This differs from 

 C. rubiginosa in the more piriform shape of the sporangia, in 

 the shallow cups being marked wath about twenty strong ribs, 

 and in the rusty-red spores. The colour of the spores is the chief 

 character that distinguishes C.ferruginca from C. macrocarpa. 



DiCTYDiuM CANCELLATUM (Batsch) Macbr. var. alpinum. 

 Found in several places on stumps. The largest growth covered 

 an area of three square inches on the under side of a spruce log : 

 the sporangia are erect or inclined on stout stalks 2 mm. high : 

 they resemble typical var. alpinum in having only twenty to thirty 

 ribs to the sporangial net, but differ in the colour of the ribs being 



* See Annuaire du Conservatoire et dn Jardin hotaniqiie de Genh'e, 1913, 

 p. 319. 



