86 
Journal of Mycology 
[Vol. 11 
“The distinguishing feature of this genus is its habit of 
growing upon living leaves. It is based upon the following 
species: 
“Phylloporia parasitica sp. nov.” . . . 
[Basidiomycetae] 
Pogonomyces Murrill n. g. Polyporaceae. Bull. Torr. Bot. 
Club, 311609.' Nov. 1904. 
“Hymenophore annual, epixylous, dimidiate-sessile to fla- 
belliform, thickly covered with rigid hairs; context dark-brown, 
punky, tubes short, thick-walled, mouths small, circular; spores 
smooth, hyaline. 
“This genus is founded upon Boletus hydnoides Sw. (Prodr. 
149. 1788), described from Jamaica. It may at once be dis¬ 
tinguished from Trichaptum by its small, cylindrical, very thick- 
walled tubes. The name selected refers to its thick covering of 
bristly hairs.” 
[Basidiomycetae] 
Poronidulus Murrill n. g. Polyporaceae. Bulletin of the 
Torrey Botanical Club, 31 14 25. Aug. 1904. 
“Hymenophore annual, tough, sessile, epixylous, at first 
sterile and cup-like, the fertile portion developing from the 
sterile; context white, fibrous, tubes short, thin-walled, mouths 
polygonal; spores ellipsoidal, smooth, hyaline. 
“The type of this genus is Boletus conchifer Schw. (Syn. 
Fung. Car. 1818), a very common and abundant species on dead 
elm branches. The development of the fruit-body is peculiar, 
being in two stages, the first ending with the formation of a cup¬ 
shaped sterile body, from which the fruit-body proper later de¬ 
velops. This preliminary pileus begins as a knot of whitish 
mycelium, which soon ceases to grow at the center, while the 
hyaline borders continue to grow upward and form a cup re¬ 
sembling species of Nidnlaria. The margin of the cup is thin 
and entire or undulate and becomes darker like the center when 
the limit of growth is reached, while the concentric zones within 
very plainly show the progress of the development. The cup 
varies from deeply infundibuliform to shallow or even flat at 
times and the central portion which has ceased to grow is much 
cracked radially to accommodate itself to the growing exterior. 
“The pileus proper usually arises from one side of the cup 
near its base and expands laterally into reniform, zonate hymeno¬ 
phore considerably larger than the sterile portion. At times the 
pileus does not develop beyond the surface of the cup and at 
other times a developed pileus becomes proliferous at several 
points and give rise to new streile and sterile portions. Since the 
formation of the cups continues throughout the growing season, 
many are overtaken by winter and are found among the new ones 
the following spring. The old pilei rarely remain over winter, 
being fragile and readily devoured by insect larvae.” 
