Jakob E. Lange: Studies in the Agarics of Denmark. III. 3J 



incarnate. The stem is at first white, then (except base and 

 apex) tinged deep and rich incarnate or pinkish. Flesh of stem 

 incarnate, of cap paler. 



2. I. pyriodora (Pers.). 

 Not figured. 



The typical or intermediate form of the pyriodora-group (well 

 ligured by Bresadola (loc. cit. tab. 52) is not very common with 

 us, but met with occasionally in foliaceous woods. The cap is 

 somewhat ochraceous, scaly-librillose. The flesh is often almost 

 without a tinge of incarnate. Such specimens, especially if the 

 umbo is somewhat conic and the cap without scales, form a 

 transition to /. albidula (no. 3). 



3. I. albidula Britz, ex Sacc. (?). Plate III, fig. 3. 



Spores obliquely ovate, 9 x 5 x / 2 u. Cystidia on edge of two 

 kinds: a) inflated-fusoid, 13— 16 u broad, muriculate; b) inflated- 

 clubshaped or roundish, 10 — 15 u broad. 



Fig. specim.: Hunderup, wood of Fagus, Aug. 1915. Not rare, 

 in foliaceous woods. Typical specimens are easily distinguished 

 from the preceding species by the following characteristics : Cap 

 at first conic campanulale, rather acute, then expanded with 

 prominent umbo. Surface at first whitish, smooth (slightly 

 viscid), later on — especially towards the edge - argillaceous 

 and somewhat fibrillose. Stem comparatively short, firm, equal 

 or slightly bulbous, almost glabrous, at last slightly brownish- 

 fibrillose. Gills at first pallid. Flesh almost white, in base of 

 stem and umbo occasionally turning faintly incarnate, as does 

 also the stem when bruised. The descriptions of Saccardo and 

 Bataille do not exactly cover my plant, but I have found no 

 others which will fit it. Probably most mycologists have not 

 separated it from /. pyriodora. 



[I. corydalina Quel. — It is not rare to meet with specimens 

 of I. albidula in which the umbo — rarely the whole surface of 

 the cap — is as if stained with glaucous-gray ink. This I be- 

 lieve is /. corydalina Quel, (said to smell like Corvdalis cava 

 (bulb?)]. 



4. I. scabra Bicken (nee al). 



Spores somewhat oblique, ovate, 9 X 5 u. Cystidia on edge: a) cv- 

 lindric-bottleshaped, slightly muriculate, about 10 u broad; b) cy- 

 lindric elubshaped, about 7 u broad. 



Fig. specim.: Hollufgaard. moist foliaceous wood, Aug. 1915. 

 Bather rare. This species is also very close to I. pyriodora. Its 

 chief distinctions are: Cap obtusely umbonale or gibbous, cen- 

 tral part covered with dark umber (or almost bistre) broad, ad- 

 pressed scales, towards the edge fibrillose-lacerate and somewhat 

 paler. Stem whitish, towards the base somewhat sordid. Gills 



