.lakob E. Lauge: Studies in the Agarics of Denmark. III. 17 



Fig. specim.: Hjallese, on the ground in wood of Fagiis, Mav 

 1897*. 



This exceedingly common mushroom, which l)egins to appear 

 already in spring or early summer, varies very much in colour 

 (from dark date-brown to almost white or very pale ochraceous: 

 (In a wood of Picea (Tommerup 1898) I have even met with a 

 pure white, very small form). Also the gills vary in colour 

 (from pure white to pallid gilvous or even ochraceous). 



10. C. macilenta Fr. 



Spores ovate, 4% — 5 l j 2 x 2 1 /-, — 3 u. Basidia 4-spored. Cystidia 

 hahshaped, somewhat nodulose or wavy. 



Fig. specim.: Gerup, near Korinl, on boggy ground in wood 

 of Picea, solitary, July 1900. 



11. C. nitellina Fr. forma minor Fr.). 



Spores 7 1 / 2 x 4*/ 4 u, obliquely ovate, with a somewhat lateral pedicel, 

 granulate-rough. Basidia 4-spored. No cystidia. 



Fig. specim.: Langesø, on the ground behind a garden-railing 

 in mixed wood, Sept. 1910 (few specimens). 



This little fungus, well figured by Fries (Iconcs sei. 65 3 ), differs 

 habitually very much from the larger type (Icones sei. 65 1 ). 

 Perhaps it should be regarded as a distinct species, although 

 the spores are similar to those of the large type figured by 

 Rickkn (1. cil. tab. 108). — The plant figured by Cooke (1. cit. 

 fig. 140) can hardly be a true C. nitellina. 



For comparison I add a brief description of my plant: Cap 

 about 1 cm, flat, umbonate, margin incurved, hygrophanous, dark 

 fulvous. Stem glabrous, lucid, light fulvous, towards the base 

 paler and slightly while-tomentose, somewhat hollow, <V /2 cm long, 

 2 L /o mm broad. Gills whitish, with a tinge of ochraceous, rather 

 narrow. It has a faint rancid odour. 



12. C. tenacella (Pers). 



Spores ovate-oval, 5 — 7 < 3 — 4 u. Cystidia on edge and face of 

 gills cylindric-fusoid, about 10 u broad, varying (even on the same 

 gill) from somewhat pointed to almost capitate (contracted a little 

 below the apex, thus forming a kind of head, which often at 

 first is covered with a granulate-warty hood). 



Fig. specim.: I »Fruens Bøge, Nov. 1895; II Vormark, Oct. 

 1890 (on cones of Picea). 



This nice little fungus is common in our woods of Picea on 

 fallen cones, even deeply buried ones, in which case the root 

 is long and ascending. The colour of the cap varies from pure 

 white to dark datebrown. The stem, which appears to be gla- 

 brous, has a faint bloom. When examined under the microscope 

 this bloom is seen to be, in fact, very scattered, erect, hyaline, 

 very short hairs (about 20 u long). 



9 



