(411) 
16. RUSSULA Pers. Obs. Myc. 1: 100. 1 
790. 
Putrescent: cells of the sporocarp vesicular, non-lactifer- 
ous: pileus fleshy, convex or depressed, dry, velvety, or the 
pellicle breaking into areolate, crustose scales, the margin ob- 
tuse, seldom striate: lamellae adnate, broad, somewhat heter- 
ophyllous or sometimes forking: spores white or yellow, 
usually globose, echinulate: veil none: stipe central, fleshy, 
solid or spongy, sometimes hollow. 
Type, Reussula lepida Fries. (Syll. 5: 461.) 
This is Aussula § 3, Aigidae, of the Sylloge. It forms a 
well-marked group, though some of the species approach 
Ftussudina rather closely. 
17. RUSSULINA Schroet. Krypt. Fl. Schles. 3': 550. 
1889. 
Putrescent: cells of sporocarp vesicular, non-lactiferous : 
pileus fleshy, fragile, convex or depressed, moist or viscid, 
glabrous but witha thin separable pellicle, usually tuberculate- 
striate: lamellae adnate, normally all equal, rather broad 
spores white, yellow or subochraceous, usually globose, 
echinulate: veil none: stipe central, fleshy, fragile, often 
hollow. 
Type, Aussula integra Fries. (Syll. 5: 475.) 
This is Aussula § 5, Fragiles, of the Syloge. It is a 
large and natural group. Schroeter’s genus was founded 
on the color of the spores, but this character is not here 
accepted as of generic importance. 
Tribe III]. AcGaricEaz 
Hymenium covering true lamellae. Cells of the sporo- 
carp all slender, elongated: spores black, brown, pink or 
white. 
§ 1. Gymnophylli 
Lamellae naked even when young: no veil or cortina. 
18. HYPONEVRIS Paulet, Ic. 1: Pl. 1: 3-5. 1793-1812. 
Schizophyllus Fries, Obs. Myc. 1: 103 (typonym). 1815. 
Flabellaria Pers. Champ. Comest. 105 (typonym). 1818. 
