ON THE CLASSIFICATION OF FUNGI. 37 



Stem and flesli confluent. Habit irregular. Gills decurrent, 

 folded, thick, swollen, bi-anched. Trama floccose. (PI. IV. fig. 3.) 



XII. NYCTALIS (White). Parasitic on some dead Agarics. 

 Small. Veil universal, floccose, pruinose. Pileus fleshy, pulveru- 

 lent, confluent with Stem. Gills broad, thick, juicy. (PI. IV. 

 fig. 4.) 



XIII. MARASMIUS (White). Parasitic or terrestrial. Small 

 and slender. Tough. Wither with di-ought and revive with 

 moisture. Not putrefying. Gills tough, thick, distant, confluent 

 below, adnexed. (PI. I. fig. 4 ; IV. fig. 5.) 



XIV. LENTINUS (White). Mostly parasitic. Pileus fleshy, 

 tongh, hard when dry. Stem absent, or confluent, hard. Gills 

 tough, simple, thin, acute-edged, denticulate, without trama. (PI. 

 IV. fig. 6.) 



XV. PANUS (White). Parasitic. Pileus lateral, or unequal- 

 sided, tough, drying up in drought and reviving in rain. Stem 

 confluent. Gills thin, tough, entire, acute-edged, with floccose 

 trama. (PI. V. fig. 1.) 



XVI. XEEOTUS (White). In peat. Pileus membranaceous. 

 Stem confluent. Gills dichotomous, sub-decurrent, tough, obtuse 

 edge. (PI. V. fig. 2.) 



XVII. TROGIA (White). Parasitic. Small. Pileus cup- 

 shaped, sessile, soft, dry, flaccid. Gills folded, forked, crisped. 

 (PI. V. fig. 4.) 



XVIII. SCHIZOPHYLLUM (White). Parasitic. Pileus sessile, 

 not fleshy, dry. Gills tough, branched, edges split and revolute, 

 with downy pellicle above. (PI. V. fig. 5.) 



XIX. LENZITES (White). Parasitic. Pileus hard, corky, 

 sessile, dimidiate. Gills hard, branched, anastomosing, long-lived. 

 (PL V. fig. 3.) 



THE GENERA OP POLYPOREI. 



There are eight Genera in this Order, characterized respectively 

 IS follows : 



I. BOLETUS. Terrestrial. Fleshy. Pileus circular, pulvinate. 

 Stem central. Tubes separating from Pileus and from each other. 

 No trama. (PI. VI. fig. 1.) 



II. STROBILOMYCES. Terrestrial. Tough. Pileus scaly. 

 Tubes adherent and coherent. No trama. (PI. VI. fig. 2.) 



III. POLYPORUS. Mostly parasitic. Pileus amorphous, often 

 very large. Sessile, or with short lateral stem. Tubes insepar- 



