Jakob E. Lange: Studies in tbe Agarics of Denmark. III. 45 



41. I. umbrina Bres. 



Spores 8 — 9x5— 6 (J, nodulose-angulate, with more or less pro- 

 minent obtuse nodules. Cystidia fusiform-bottleshaped, about 

 1 4 (j. broad, apex somewhat muriculate. 



Fig. specim.: Vaasemose, wood of Fagus, Oct. 1915. - Also 

 found in wood of Picea (very numerous), Gerup, Oct. 1916 and 

 in Jylland (P. Larsen), and Sjælland (Sew Petersen)]. 



Cap 1,8 — 2,5 cm, convex, slightly umbonate, innately iibrillose, 

 subviscid. Stem not hollow, minutely fibrillose-striate, apex 

 slightly powdered, bulbous (bulb occasionally marginale, sub- 

 terraneous). Gills at first claycoloured-brownish, narrowed behind 

 and somewhat adnate. Veil evident but fugacious. The whole 

 plant is at first pale brownish but soon turns darker brown 

 (except the white bulb). 



Dillers from Bresadola's description and figure (Fungi Trid. 

 tab. 55) by being somewhat smaller, the gills not yellowish at 

 first. — /. Rennyi Berk, et Br. (Cooke's illustr. tab. 520 A) looks 

 very much like my plant, but has no bulb. 



42. I. plumosa Quel, (nee Bolt.) (?). 



Spores 9V2 — 12 u long, oblong, nodulose-warty, somewhat oblique. 

 Cystidia dispersed, variable, ventricose, muriculate, 15 — 20 u 

 broad. 



Fig. specim : Vormark, sandy and stony common on the coast 

 of Store Belt, under poplars, Oct. 1901. 



Cap rather fleshy, 6 1 /., cm, gibbous, edge at last turned upwards: 

 central part almost even, but for the rest fibrillose-subsquamulose 

 (not rimose), brown (colour of Tricholoma imbricatum). Stem equal, 

 rather short, 1cm broad, slightly iibrillose, paler than cap. Gills 

 crowded, at first dingy white, then pallid grayish brown, adnate. 

 Flesh white. Not hygrophanous but somewhat paler when dry. 



As I have only found this species once (some few, rather 

 overgrown specimens) I cannot decide whether it is the true 

 /. plumosa of Quélet. It has much in common with /. carpta 

 Bres. (nee al.) (Fungi Trid. lab. 54), (which Quélet cites as a 

 synonym to his I. plumosa), but is not so dark and without the 

 acute umbo 



43. I. lanuginella Schroet. 



Spores 8— 9 1 / 2 u, oblong, outline with about 5 obtuse nodules. 



Cystidia inflated fusoid, 15 — 16 u broad, smooth or somewhat 



muriculate. Fibrils on cap septate, about 7 |u broad. 



(Spores oblong, irregularlv nodulose (with 7 — 8 obtuse nodules) 



(1900). 



Fig. specim.: Killerup, on moist ground (Juncus bufonius etc.) 

 in foliaceous wood, July 1905. — Also found at Arden, under 

 Salices in garden (1900), and at Lammehave 1905. 



