Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 82. (Budapest 1990)
Bohus, G.: Agaricus studies, XI. (Basidiomycetes, Agaricaceae). A monographical key
le - Differs from the type: cap with pointed squames. Colours of fungus unchanging. BOH.: IV: 84 A. maskae var. imrehii BOH. Id - See A. macrosporoides in XI. group: Arvensis: 7b XI. group: Arvensis la - Stem bulbous 2 lb - Stem not bulbous 3 2a - Cap immediately broken up into wide, almost imbricated squames, ground colour white, squames more or less ochre, 6-11 cm. Gills greyish rosy. Stem 7-11 x 1.5 (base to 2.5) cm, bulb more or less sharply marginate, white, yellowish brown when handled. Ring double, radially with coarse squames on the underside. Smell anise-like. Spores 9-9.5 x 5-5.5Aim. In woods of Picea . BOH. X: ; PIL. I: QB A. arvensis ssp. macrolepis (PIL. et POUZ . ) BOH. 2b - Cap not squamose, 8-18 cm, white, cream, ochreous yellow when old, slowly yellowing when white after one day. Gills greyish flesh colour, rarely vividly rosy. .Stem 9-20' x 1-2 (bulb 2.5) cm, more or less submarginate bulbous, white. Ring double, with cogwheel ornamentation on the underside. Flesh unchanging or yellowish after one day. Smell more or less anise-like. Spores 6.3-7.7 x 4.5-4.5 jjm . In Robi ni a woods. The umbrella-like fungus perhaps does not belong to A . ar vensis , but an independent species ... A. arvensis var. umbrelloideus BOH. 2c - Fungus small-sized: cap 3-6 cm. Ring simple. Cap whitish then light ochre. Gills long white. Stem 2.5-5 x 0.5-1.2 (bulb 2) cm, bulb covered with squamules in circles, white, finally more or less ochre. Smell rarely like almonds. Spores 5.5-7 x 3.5-4.5Aim. Cheilocystidia absent. In gardens, parks. CAPP. Ill: 453 .... A. amanitaeformis WASS. 2d - Fungus larger: cap 6-9 cm. Ring double. See A. nivescens (MOELL.) MOELL. var. parkensis (MOELL.) MOELL. in the XI. group: Arvensis-. 3b. 3a - Spores ovoid, wide ellipsoid, spherical: (5)5.5-7 x (4)4.5-5. 5 Aim . Cap 8-15(20) cm, white, rather only slightly turning yellow or ochre, smooth, but may be broken up into squamules. Gills long whitish, later greyish, rosaceous greyish, lilac greyish. Stem 6-10 x 1.5-3 cm, cylindrical, may be more or less bulbous too, white, scurfy, i.e. coarsely granulate-squamose on the lower half or towards the base when young. Ring double, with a cog-wheel ornamentation on the underside. Flesh white, almost unchanging. Smell more or less almonds-like. Cheilocystidia numerous, ovoid, shortly clavate to balloon-shaped, 10-15(30) x 6-12,/Jm. On grassland, on grassy places under trees too, also on saline soil, often in fairyrings. BON : 279; CAPP. Ill: 451, CKE .: 523 ; E.: 35; MOELL.: XVIII/b, XXIX ; PIL. I: 82, 83 A. nivescens (MDELL.) MOELL. var. nivescens (= A. osecanus PIL.) 3b - Differs from the type, size smaller: cap 5-8 cm, stem 6-9 x 0.8-1.5 cm; occurring rather under trees on grassy places. It is similar to A . ar vensis SCHFF.: FR. var. subarvensis BOH., but spores of latter larger and ellipsoid, further stem not granulate-squamose towards the base. MOELL:.- 159 A. nivescens var. parkensis (MOELL.) MOELL. 3c - Spores neither ovoid nor spherical, but ellipsoid and larger 4 4a - Cap white when quite young, but quickly straw-yellow or ochre; lemonyellow on touching, cuticle early broken up into fibrils or fissured radially, 6-12 cm. Gills long pale then light flesh rosy. Stem 4-8 x 2-2.5 cm, cylindrical, above the ring with roundish squames-flocci . Ring thin, with roundish squamules on the underside. Smell almonds-like. Spores 7.5-9 x 4.5-5.5 Aim. Cheilocystidia variable in form: from subglobose (12-17 x 9-14 Am) to balloon-shaped (20-24 x 10-14 Am) or broadly clavate to bottle-shaped (28-40 x 12-20 Aim). On saline soil in grassland but in woods too. CAPP. Ill: 449; E.: 37; MOELL.: XlX/b; WASS. II: V/5 A. fissuratus (MOELLT^MOELL . 4b - Cap cuticle not fissured radially 5
