I CLASSIFICATION OF AGARICS 705 



This Bpecies has doI yel been I id with certainty in the State. 



The description is adopted from thai of Fries in [cones T. 

 iitu Ailv. and '/'. nobile Pk. approach ii by their external characters, 

 imt if the spore measurements given i>\ the English authors actually 

 belong to this species, then '/'. nobile is quite distihcl bj its spher- 

 ical Bpores, and T. venenata by its larger Bpores. ii is easy to 



confuse T. album with '/'. panoeolum in bo I its forms when 



young and white, bu1 later the changing uill> of the latter spe< 

 mark it sufficiently. The miens is said to be entirely glabrous, and 

 this also separates /'. album from T. venenata and T. nobile. The 

 taste is given by Fries as "acrid" in [cones, and "bitter" in Bymen. 

 Europ. In Lindblad's Svampbok the pileus is saiil to become Bordid- 

 stained an hour after being bruised, the odor is said to he Btrongly 

 padishy; and the planl is said to have a Bharp burning taste after 

 being chewed awhile. Some authors consider it poisonous, and 

 it is evidently qo1 edible, and must be regarded close to '/'. venenata 

 in this respect. It appears that this Bpecies needs further study, 

 ami it is desirable thai continental authors give us exad data con- 

 cerning the spores Of their plants. 



743. Tricholoma acerbum Fr. (Unpalatable) 

 Syst. Mycol., 1821. 



Illustrations: Gillet, Champignons de France, No. 662. 

 Plate CL1 <>i this Report. 



PILEUS 7 10 em. broad, firm, convex-expanded, obtuse, dry, sub 

 pruinose, soft to the touch, '/"// buff to u< llowish white, or whitish 

 urith a flesh color tinge, margin at firsl inrolled and obscurely 

 ridged. FLESH white, thick on dish, thin mi margin. <;ild,s 

 emarginate with decurrenl tooth, narrow, crowded, whitish becom- 

 ing creamy white or slightly rufescent, edge em irr. STEM I <> cm. 



long, 1-2 cm. at apex, 2-2.5 cm. below, someti - abruptly Bhort- 



rooting, solid, firm, at lirst bulbous then tapering upward, ;it ftrsl 

 covered by a thin satiny tomentum or pruinosity, becoming fibril- 

 lose, whitish becoming dingy where handled. SPORES minute, 

 spherical; nucleate, 1-5 micr., white. CYSTIDIA none. BASIDIA 

 ahom 30x5-6 inicr. TASTE very bitter; ODOR scarcely agreeable, 



Borneo hat aromatic t'arinaiemi-. 



Gregarious to subcaespitose. <»n the ground in frondose woods. 

 Ann Arbor, Detroit, New Richmond, Bay View. June-October 

 i earliesl record, •' ane 1 1 I . Frequent. 



89 



