CLASSIFICATION OF AGARK 



Ray View, Marquette, New Richmond and Ann Arbor. August 

 October. Frequent. 



This species is closely related and perhaps identical with either 

 /'. togularis Bull, or /'. blattaria Fr. A1 the presenl time it Beema 

 impossible to determine its Btatus with certainty. The figures of 

 P. togularis by Fries and Sicken show the median annului and the 

 striations <»n its upper surface as in our Bpecies, and in most other 

 respects they illustrate our planl well. Ricken also gives the spo 

 of P. togularis as L0-12x5-6 micr. Other European authoi 

 smaller spines. Fries changed his conception of P. togularis 

 pressed in Systems and Epicrisis bo thai in Hymen. Bnrop. he omits 

 the hygrophanous character; Ricken, however, Bays il is hygro- 

 phanous, and both authors indicate thai i1 is Btriatulate on the cap 

 when moist. As to P. blattaria, Fries considered it a Bmaller plant, 

 more ferruginous in color and with almost five uills. Ricken dis- 

 tinguishes ii from /'. togularis by the nature of the annulus which 

 he says is striate also and at length falls to pieces. Be also de- 

 scribes the planl as Galera-like, a comparison which Fries had 

 made of /'. to</ulari8. Ricken assigns spores to P. blattaria measur- 

 ing 7-8x3-4 micr., Massee gives them Bmaller yet, while Schra 

 and Britzelmayr say they measure nil \ 5 micr. With such data 

 not much can be decided. Harper has reported and described the 

 two species, and gives the spore-sizes the reverse of those of Ricken. 

 The markedly rugose surface of the pileus <»r the American plant de- 

 scribed above as P. rugosa Pk., the expanded pileus, the colon and 

 the spore size, would indicate thai it had better be kept distinct 

 at present. 



Illustrations: of P. togularis Bull. 

 Fries, [cones, PI. 104, Fig. 1. 

 Gillet, Champignons de France, No. 530. 

 Patouillard, Tab. Analyt., No. 339. 

 Ricken, Blatterpilze, PL 56, Fig. 5. 



Harper, Wis. Acad. Bci. Trans., Vol. 17, PL 59 (as P. blat- 

 taria ' . 



A variety or closely related species of the Bame stature and ap- 

 pearance as /'. rugosa was found in low, rich w Is. lis PILE1 > 



was hygrophanous, chestnut-brown (moist), pale-alutaceous (di 

 never striate nor rugulose, glabrous. ' 1 1 LLS rounded behind, adi 

 pallid at first (no1 ochraceous), then pale brown, moderately i 



row. close. STEM bulbilate, hollow, innately flbrflloee striatul 



