496 LACTABIUS. BOLBITIUS 



Taste somewhat bitter. Pine woods, and under alders. Sept. Nov. 

 Uncommon, (v.v.) 



var. crenatus Massee. Crenatus, notched. 



Differs from the type in the coarsely sulcate margin of the pileus. 

 Fir woods. 



1623. L. tabidus Fr. Boud. Icon. t. 57. Tabidus, wasting away. 

 P. 1-5 cm., pale brick colour, then tan, becoming paler, submembrana- 



ceous, somewhat plane, acutely papillately umbonate, at length expanded 

 and somewhat depressed, somewhat rugulose; margin pellucidly striate. 

 St. 2i cm. x 4 mm., concolorous, equal, or attenuated upwards, 

 white tomentose at base. Gills concolorous but paler, adnato-decur- 

 rent, flaccid, narrow, somewhat distant. Flesh concolorous. Milk 

 white, sweet, then slightly acrid, scanty. Spores white, globose, or oval, 

 10-12 x 7-10/A, verrucose, 1-guttulate. Taste pleasant, then slightly 

 acrid. Woods, and under willows and alders. Sept. Uncommon. 



1624. L. minimus W. G. Sm. Cke. Illus. no. 968, t. 986, fig. B. 



Minimus, smallest. 



P. 6-15 mm., pallid clay colour, pulvinate, rounded, or slightly um- 

 bonate; margin incurved. St. 6 x 2mm., concolorous, generally ex- 

 centric. Gills pallid, slightly decurrent, arcuate, distant. Milk white, 

 mild, abundant. Spores white, globose, 3-4/A, echinulate. Woods, 

 and pastures. Oct. Uncommon. 



IV. St. excentric, or lateral. Growing on trunks. 



1625. L. obliquus Fr. Obliquus, slanting. 

 Entirely white, becoming yellowish. P. 5 cm., thin, plane, then de- 

 pressed, oblique, zoned with grey, lobed, silky. St. 2-5 cm. x 4 mm., 

 rather excentric, curved. Gills very slightly decurrent, crowded, 

 narrow. Flesh whitish. Milk white, slightly acrid. Spores white, glo- 

 bose, 6/x, echinulate. Smell pleasant. Caespitose. On trunks of 

 beech, and on banks. Oct. Uncommon. 



III. Receptacle membranaceous, or fleshy membranaceous, 



fragile, rapidly putrescent, or shrivelling up. 



Spores ochraceous, or ferruginous. 



Bolbitius Fr. 



(/3o\/SiToi/, dung, especially cow dung.) 



Pileus membranaceous, regular. Stem central, not confluent with 

 the pileus. Gills free, or slightly adnate, acute at the edge. Spores 

 ochraceous, ferruginous, fuscous, or salmon colour; elliptical, elliptic- 

 oblong, or almond-shaped; smooth; with an apical germ-pore. Cys- 

 tidia present, or absent. Growing on dung, and on rich soil. 



