Jan. 1906] North America?i Species of Marasmius 
3 
Growing on leaves, twigs, etc. Pileus 2-4 mm. in diameter, 
the stipe 1.5-2.5 cm. long. 
b'. Pileus Even or Only Rugulose. 
132. MARASMIUS PERFORANS Fries. Hym. Eur. 
Agaricus perforans Hoffman, Norn. Fung. 1789. 
Ill-smelling. Pileus submembranaceous, rather plane, with¬ 
out striae, rugulose, glabrous, whitish. Stipe fistulous, equal, 
velvety, bay-black, the base insititious. Lamellae adnate, simple, 
rather close, whitish, most of them dimidiate; spores elliptic- 
ovoid, 5-6 x 2-3 mic. 
Growing on leaves of Abies. Pileus 6-10 mm. in diameter, 
the stipe 2-4 cm. long. 
133. MARASMIUS EPIPHYLLUS Fries. Hym. Eur. 
Agaricus epiphyllus Persoon, Synopsis. 1801. 
Pileus membranaceous, rather plane, at length umbilicate, 
glabrous, plicate-rugose, milk-white. Stipe horny, fistulous,' 
slightly velvety, brown below, insititious. Lamellae adnate, few 
and distant, entire venose, white; spores oblong, 6-7 x 2 mic. 
Growing on the petioles and veins of old leaves. Pileus 5-10 
mm. in diameter, the stipe 3-5 cm. long. 
134. MARASMIUS MINUTISSIMUS Peck, 27 N. Y. 
Rep. 1874. 
Very small, the whole surface invested with a minute glandu¬ 
lar pubescence. Pileus membranaceous, convex then explanate, 
faintly rugulose, whitish. Stipe filiform, brown below, fading 
gradually to white at the apex, the base insititious. Lamellae 
few and distant (4-10), white, narrow, adnate, sometimes vein¬ 
like and imperfect; spores lance-oblong, 7-10 x 3-4 mic. 
Growing on old leaves along the borders of fields next to 
woods. Pileus 2-5 mm. in diameter, the stipe 6-16 mm. long. 
The glandular hairs are longest on the lower part of the stipe, 
becoming smaller upward and on the pileus and most minute on 
the lamellae. Peck’s description is of the smallest plants. 
§2. OMPHALIA. PILEUS SUBMEMBRANACEOUS; 
THE STIPE CENTRAL, CARTILAGINOUS, FISTULOSE, 
SOMEWHAT THICKENED UPWARD ; THE LAMEL¬ 
LAE TRULY DECURRENT. 
I. CYATHIFORMES. Pileus submembranaceous, at 
length depressed, umbilicate or even infundibuliform. 
A. STIPE GLABROUS. 
135. MARASMIUS VAILLANTII Fries, Hym. Eur. 
Fungus pileo candicante, etc. Vaillant, Bot. Paris, 1727. Aga¬ 
ricus Vaillantii Persoon Synopsis. 1801. 
