616 THE AGARICACEAE OF MICHIGAN 



flocculose. STEM G-15 cm. long, rooting, root up to 10 cm. long, 

 ventricose varying to napiform and then very thick, up to 3 cm. at 

 bulb, equal upwards, firm and hard, solid below; spongy-stuffed 

 within the hard outer rind, sometimes becoming cavernous, floccose- 

 torn from bulb to annulus, often concentrically floccose near bulb, 

 white. ANNULUS fragile, lacerated, sometimes remaining as a 

 ring with margin quite torn, sometimes adhering to gills or margin 

 of pileus. VOLVA densely floccose, white, mostly left on pileus, 

 sometimes attached to bulb or stem as floccose, irregular concentric, 

 sofl scales. SPOKES not large, 8-12x5-7 micr., varying in both 

 dimensions. Young immature spores are spherical then ovate, 

 elliptical at maturity, granular within. ODOR strong of chlorine 

 or chloride of lime, disagreeable. 



(Dried: Dingy-white.) 



Solitary or gregarious. In woods on the ground, often on hard, 

 gravelly soil. Lansing, Detroit. Infrequent. 



The original description, copied by Mcllvaine, was made by Peck 

 from a single specimen. Austin the finder, also published a descrip- 

 tion at the same time. Since the plant is very variable, in the 

 manner so fully described for A. solitaria by Atkinson in his mush- 

 room book, the original description must naturally have many 

 short-comings. Hence I will assume, until we have further data, 

 that all our plants with the strong chlorine odor belong under this 

 species. 



Like A. solitaria, A. chlorinosma is a large and striking species, 

 usually pure white, becoming dingy cream color ; the surface of the 

 whole plant is sometimes thick with a mass of cottony scales. The 

 spores have been found variable and add to the confusion of species. 

 Under the microscope the young and matured spores are shown 

 detached. The young spores naturally measure much less than the 

 mat mo spores. A. radicata Pk. (Bull. Torr. Bot. Club, Vol. 27, p. 

 609 1 is described as having large and firm scales; the odor, the 

 spores and the rooting stem are the same as in A. chlorinosma. It 

 seems to bear the same relation to A. chlorinosma as A. strobili- 

 formis bears to A. solitaria. 



656. Amanita russuloides Pk. (Suspected) 

 V Y. State Mus. Rep. 25, 1873. 



PILEUS 5-12 cm. or more broad, ovate at first, then convex-ex- 

 panded, pale yellow or straw-color, paler on margin, surface viscid, 



