• 27 
ate it. According to Professor Morgan's notes, the dissepiments are 
at first thick and obtuse. In the dried specimens they are thin, acute 
and uneven or dentate. They do not become distinctly ficxuous or 
labyrinthiform, and their length is scarcely equal to the thickness of 
the flesh of the pileus. 
MYRIADOPORUS, Gen. nov. 
Hymenium cellular-porous ; pores of the surface shallow, open, 
the others imbedded in the hymenium, variously directed, short, 
closed,^ inseparable from each other and from the hymenophore. 
This is a singular genus of Polyporei, at present represented by 
two species, both of which are resupinate and bear a striking resem- 
blance to certain resupinate species of Polyporus. I have not been 
able to find spores in either species, and can scarcely avoid the sus- 
picion that both may be abnormal developments of species oi Poly- 
poriis. Still, the structure is so peculiar that I have thought best to 
describe it. The pores do not, as in Polyporus^ form vertical, parallel 
tubes, but rather cells or short tubes variously directed, so that a ver- 
tical section of the hymenium, as well as a horizontal one is porous. In 
the thickening of the hymenium, new pores are begun and old ones are 
closed from time to time and are thereby changed into cells or vesi- 
cular cavities. In both species the pores are minute, and sometimes 
contiguous ones run into each other. 
Myriadoporus adustus.— Hymenium about one line thick, dis- 
tmct from the whitish or pale cream-colored subiculum, from which 
*t is separated by a definite line, grayish-black, varying slightly in 
color within, wherefore appearing substratose in a vertical section; 
pores minute, those of 4he surface unequal, somewhat angular, occa- 
sionally confluent. 
Decaying wood. Ohio; Morgan. 
The hymenium closely resembles in color that o{ Poly poms adustus ^ 
and the subicular hymenophore is very similar in h'ue to the corres- 
ponding part of that Polyporus, so that our plant might at first sight 
he taken for a resupinate form of that fungus. It forms a statum two 
inches or more in length, and, when separated from the matrix, rolls 
||P in drying. The stratified appearance of a vertical section of the 
hymenium is apparently due entirely to a variation in color and not 
^0 any interruption in the structure. 
Polyporus induratus, Pk , 31st Museum Report, p. 37, has a simi- 
lar structure, and, if the genus shall prove to be a valid one, this will 
stand as Myriadoporus indnratus. In it the hymenium is concolorous 
^vith, and inseparable from, the subiculum. The general appearance 
^nd color of the fungus are suggestive of Polyporus obducens. 
Valsa minutella. — Pustules minute; perithecia six to twenty in 
^pustule, nestling in the bark, crowded, black; ostiolaerumpent in a 
J^inute subferruginous disk which is closely surrounded by the rup- 
tured epidermis, black; asci short, clavate or subfusiform, scarcely 
pedicellate, .0009 to .0012 in. long, .0002 to .00025 in. broad, spores 
allantoid, crowded, .0002 to .00025 i"- ^^"S' 
Kark of beech {Fagus ferruginea), Canada; Professor J. Macoun. 
Very small in all its parts and readily recognized by its minute pus- 
^uies and subferruginous disk. 
