140 
HYMENOMYCETES 
NYCTALIS 
(Gr. mix, night—from the habit, growing in dark places) 
N. parasitica (from its parasitic habit). Plate XI. 3. 
P. f in., grey, conical, then expanded. G. adnate, distant, 
thick, brownish. S. 1-3 in., slender, wavy, equal, whitish. 
Gregarious or caespitose on rotting Russula nigricans , R. 
adusta, R. foctens , and R. delica. Common in aut. 
N. asterophora {aster, a star; fero , to bear—from the minute 
stellate conidia on the pileus). Plate XI. 1. 
P. \ in., conical, then hemispherical; mealy, whitish. 
G. adnate, distant, narrow, dingy. S. J in., slender, twisted, 
rather mealy; white at first, then brownish. Autumnal. 
Gregarious or slightly caespitose on old blackened specimens 
of R. nigricans , R. adusta, Collybia fusipes , and a few other 
agarics. “ The stellate conidia on the pileus have been 
named Hypomyces asterophorus ” (W. G. Smith). 
HYGROPHORUS 
(Gr. hugros, moist; phero, to bear—from the water-bearing 
character) 
This genus is divided into three sub-genera as follows: 
Sub-genus 1.—Hygrocybe. 
Veil absent. Pileus viscid when moist, shining when dry. Stem 
not ornamented with scales or wart-like projections. Gills soft. 
Sub-genus 2.—Camarophyllus. 
Veil absent. Pileus not viscid when moist, firm and opaque when 
dry. Gills distant, arcuate. 
Sub-genus 3.—Limacium. 
Universal veil viscid ; partial veil floccose, often forming a trace of 
a ring, or attached to the margin of the pileus. Stem ornamented 
with scales or wart-like projections. Gills adnato-decurrent. 
All are terrestrial and gregarious, usually appearing in 
meadows soon after the first frosts of autumn. 
