MurRILL: PoLyPporRacEAr OF NortTH AMERICA 43 
The plant grows upon dead wood and has the habit of P 
elegans, but is larger and darker in color. It often persists, how- 
ever, until bleached nearly white. Exsiccati have been studied 
from Maine, Flarvey, Miss White ; Connecticut, Underwood ; 
Massachusetts, Seymour ; New York, Clinton, Overacker ; Penn- 
sylvania, Lverhart ; Vermont, Farlow ; Kentucky, Price ; Wash- 
ington, Parker ; Michigan, Wood, Miss Minns. 
SPECIES INQUIRENDAE 
Polyporus amygdalinus B. & Rav. Greviilea, 1: 49. 1872. 
This species is said to differ from P. caudicinus in having smaller 
tubes, but it is probably only a form of that species in an unde- 
veloped stage. I have not been able to find a type specimen. 
Polyporus cyathiformis Lev. Ann. Sci. Nat. Bot. III. 2: 181. 
1844. The type of this species was probably burned with most 
of Leveillé’s types during the occupation of Paris by the Germans. 
The description corresponds closely with P. craterellus, but it is 
difficult to determine that the two species are identical. 
Polyporus pachypus Mont. Pl. Cell. Cuba, 421. 1842. This 
species is described as caespitose, with thick excentric stipe and 
membranaceous tubes, which are small and rounded near the 
Margin and large and favoloid near the stipe. No types have 
been found in foreign herbaria and Montagne himself said in his 
Sylloge that the species needed further investigation. 
Polyporus stipitarius B. & C. Jour. Linn. Soc. Bot. 10: 304. 
1868. The original description just cited does not materially as- 
Sist one in interpreting the type plants in the Berkeley herbarium. 
Most of these types so closely resemble P. Zricholoma that a new 
description of them seems superfluous ; and the one card of speci- 
mens which appears to be somewhat different from the rest was 
listed under P. Tricholoma by Berkeley at the time that P. stzpitarius 
Was described. Judging from the Kew collections, P. stipitarius 
appears to differ from P. 7richoloma chiefly in possessing a longer 
stipe, yet the description calls for a stipe shorter than that of P. 
Lricholoma. New material may possibly throw light on this prob- 
lem, but I seriously doubt if Berkeley’s species can ever be en- 
tirely disentangled from the earlier one of Montagne. 
Polyporus gracilis K\, Ann. Nat. Hist. 3: 384. 1839. This 
