188 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
The writer is inclined to agree with Morgan that this fungus is a per¬ 
manent species, and that its two most striking peculiarities, viz., 
the porose-cellular hymenial layer and the peculiar veil, are normal 
structures. However, before summarizing the grounds on which 
this belief is based it will be well briefly to examine certain abnormali¬ 
ties, which more or less closely resemble Lentodium. Such abnor¬ 
malities are not common but have been reported in both Agaricaceae 
and Polyporaceae. 
Anastomosing gills forming tubes and irregular spaces are nor¬ 
mally present in a number of accepted genera, as in Daedalea, 
Lenzites, Paxillus, species of Marasmius, etc. They also occur in 
occasional monstrous specimens of various species, e. g., Patouillard 
(’98) reports a specimen of Agaricus campestris in which the ventral 
surface of the pileus is decidedly polyporoid; and Boudier (’90) 
describes a morchelloid specimen of Cortinarius scutulatus Fr., in 
which the ventral surface of the pileus is perfectly normal, but the 
upper face is covered with alveolar spaces formed by anastomosing 
plates. These spaces are usually shallow open depressions, but 
occasionally may form closed chambers. It was doubtless such forms 
as this that Fries (’36-38) grouped in the genus Stylobates, believ¬ 
ing them to be autonomous species; in Stylobates both faces of the 
pileus bear gills, those above anastomosing more or less. 
A porose-cellular hymenium is known in a number of forms of 
doubtful status which have been described as new genera, but which 
are generally supposed to be merely occasional deformities of species of 
Polyporaceae. An excellent example is Myriadoporus which Peck 
(’84b) describes as follows: “Hymenium cellular-porous, pores of the 
surface shallow, open, the others embedded in the hymenium, variously 
directed, short, closed, inseparable from each other and from the 
hymenophore. ... At present represented by two species, both of 
which are resupinate and bear striking resemblance to certain resu- 
pinate species of Polyporus. I have not been able to find spores in 
either species, and can scarcely avoid the suspicion that both may be 
abnormal developments of species of Polyporus.” Patouillard (’00, 
p. Ill) in speaking of Myriadoporus asserts that “cette monstruosite 
peut s’observer dans tous les groupes de Polypores.” The genera 
Bresadolia of Spegazzini (’86) and Poroptyche of Beck (’88) are 
probably similar to Myriadoporus. 
It appears from the examples cited above that a hymenial region 
