Arjarkus.] FUNGI. 101 



dry retaining its original hue, tlie rest pale ; flesh thick in the centre 

 turning pale like the pileus. Gills ventricose, achiexed or adnate, 

 tawny, rather broad. Ste?)i 1 inch high, filiform, minutely fistulose, 

 paler than the pileus, pruinose. — A variable species, of which Fries has 

 five, and Persoon six varieties. The differences of this and the two 

 foregoing species are thus given by Fries in his Elenchus, v. \.p. S5. 

 A. tcner has the stem straight ; pileus conic ; gills linear ascending. 

 A, melinoides has a subflexuous, unequal, pruinose, paler stem ; pileus 

 carnoso-membranaceous ; gills triquetrous. A. Jnjpnonnn has the stem 

 yet more flcxuous, flexible, pruinose ; the pileus campanulate subpa- 

 pillate, and the gills distant and broader. 



Subgenus 27. Tapixia ; (from ra-r/^ow, to depress.) Veil 

 marginal, villous, fugacious. Stem equal somewhat diffused into 

 the pileus. Pileus more or less fleshy, even, naked, when young 

 plano-convex, the margin villous and i?ivolute ; then depressed, 

 broadly iimhilicate. Gills adnato-decurrent, rather close. 



274. A. involutus, Batscli, (involute Agaric ) ; compact, pileus 

 depressed dirty-ferruginous, margin involute downy, gills 

 dichotomous pore-shaped at tlie base, stem blunt. — a. regular, 

 growing on the ground. Batsch, Cont. 1. /. 61. Pers. Syn, 

 p. 448. Fr. Syst. Myc. v. I. p. 271. Grev. Fl. Ed. p. J389. 

 Pers. Myc. Eur. v. 3. p. 02. Klotzsch, Fung. Germ. exs. 7i. 20. 



— A. lateralis, Schceff. t. 72 A. contiguus, Bull. t. 240, 576. 



/. 2. Soio. t. 98. Purt. v. 2 (S' 3. n. 911.—^. adsccndens, 



Bolt. (Arr. p. xxxi.) t. 55 A. adustus. With. v. 4. p. 167. var. 



Purl. V. 2 c*^' 3. n. 916. — b. subexcentric, growing on stumps. 

 A. cyathiformis, Schceff. t. 252. — A. lateralis, Schceff. t. 71. 



Woods. July — Nov. Common. — Pileus 3 — 5 inches broad, wavy, 

 tawny or yellow-ferruginous, when moist slimy, uneven ; margin 

 involute and downy, the extreme edge striate from the pressure of the 

 gills ; Jiesh thick firm, at first pale but changing to dirty-umber on 

 exposure to the air as does every part of the plant when bruised. 

 Black when dried. (Hills pale yellow-ferruginous, wavy, forked, 

 decurrent, poriform behind, easily separating from the pileus. Stem 

 2 — ;J inches high, i — 1 inch or more thick, blunt, but sometimes 

 attenuated below, tomentoso-squamulosc, firm, solid. A. adsrrtuhns. 

 Bolt., is a not very unconnnon state of the plant, with an elongated 

 incurved stem from growing out of a steep bank. The gills of this 

 species separate from the pileus like the pores of a Jiolrtus, to which 

 it approaches in habit, and consist evidently of one beautifully and 

 most intricately [)licate membrane. A. jiratnisis presents a somewhat 

 similar ph.'L'uomenon, but one indicating rather a relation of analogy 

 than of affinitw Persoon, however, is of opinion that the peculiarity 

 would be sulfuient to warrant the pro|)osnl of a new gcinis if more 

 species should be found agric ing in this respect, and snizgests the name 

 Ithymovis. It must be observed, however, that the habit oi A. pratrmis 

 and A. involutus is very different. 



iSubgenus 28. CiiKPiDorrs; (from y.^r,ri:, a slipper, and c-j;, nn 

 car.) VcU very thin, fibrillosc. Pileus unequal, cxccntric or 



