.Jacob E. Lange: Studies in the Agarics of Denmark. III. 43 



Like /. asterospora it lias a minutely pruinose, marginately 

 bulbous stem; but the cap is ochraceous, less strongly rimose. 

 Probably /. subrimosa Karst, is not specifically distinct: the only 

 notable difference is in the spores, which Karsten says are 

 13-14 x 10-11 u. (Kritisk Öfversigt, Tillägg I p. 36 . Massee 

 chiefly on account of the large spores — includes it in /. asterospora, 



36. I. p. var. pusilla J. E. Lange Plate III fig 11. 



Spores It) 1 /« x 7 1 /* H, somewhat irregular, with 7—8 prominent 

 but rather blunt, coarse warts. Cystidia fusoid-bottleshaped, 

 60 15 u (the neck about 9 u), muriculate. 



Fig specim : Odense Hed, on boggy ground under Salix cinerea. 

 Aug 1916, gregarious. - Also found in other similar localities 

 in Fyn (and in Jylland by Poul Larsen). 



Cap 1.2-1.8 cm, at first conic-campanulate, then expanded 

 with a small rather acute umbo, yellowish-brown, minutely 

 fibrillose, then subrimose and slightly darker brownish. Stem 

 4 cm X I 1 /-.-— 2 mm, pale above, rest yellowish-brownish, minutely 

 striate and everywhere velutino-pruinose Bulb small, marginate. 

 Gills at first pale, then date-biownish, rather distant, free. 



Although this little liny plant is not half the size of the 

 ordinary 1 prætervisa (and more like a Naucoria than an Jnocijbe) 

 I do not think it deserves to he put up as a distinct species, 

 as all its microscopic and macroscopic characters are almost 

 ideniic. 



37. I. fibrosa (Sow.) var. trivialis. 



Spores very irregular with prominent and pointed base, 9—13 u 

 long, with subglobular warts. Cystidia inflated, about 18 u broad, 

 apex somewhat muriculate. Basidia occasionally with only 2 or 

 3 sterigms. 



Fig. specim.: Hjallese, clayev ground in garden under Populus, 

 Sept. 1902 (and July 1903). - : Found in several places in light 

 foliaceous woods, espeeiallv under poplars. 



Cap ileshv, obtusely conical (3—4 cm broad, 2—3 cm high . 

 central part pallid argillaceous, rest pale dingy brownish. Sur- 

 face slightlv viscid, minutelv fibrillose (but not truly rimose), 

 edge often irregular. Stem white, firm (6— 10 mm) almost equal 

 (below ground with a slight bulbous swelling), even and almost 

 glabrous Gills rather crowded, almost free, white then pallid 

 brownish-gray 



An uncomrnonlv large and pale, almost white form of this 

 species I have met with in Jylland (near Langaa 1914); this con- 

 stitutes the /. fibrosa proper (as figured by Bresadola I. C. tab. 

 56). The more trivial form here figured approaches I. prætervisa, 

 but differs bv the white, almost glabrous stem and want of 

 distinct bulb etc /. fastigiata var. superba (Fries: Icon sei. tab. 

 108) might be a rather dark, large form of this species. 



