a 
ne — ~ —— 
Sete r . 
MurriLL: PoLypoRacEAE OF NortH AMERICA 327 
15. Pileus purple. 15. 4. indurata. 
Pileus yellow or brown. 16. 
16. Margin papulose. 16. H. cucullata, 
Margin not papulose. 17. H. Taxodit. 
1. Hexagona alveolaris (DC.). 
Merulius alveolaris DC. Fl. Fr. 6: Pe Me 2.) 5 
Hexagona Mori Poll. Pl. Nov. 35. PLZ, 3. Te 
Boletus arcularius Schw. Syn. Car. 69. 1818. 
Cantharellus alveolaris Fr. Syst. Myc. 1: 322. 1821. 
Favolus canadensis K). Linnaea, 7: 197. 1832. 
Favolus europaeus Fr. Epicrisis, 498. 1838. 
Favolus ohiensis Berk & Mont. Syll. Crypt. 171. 1856. 
Favolus alveolaris Quél. Enchiridion, 185. 1886.—Fairman, Proc. 
Rochester Acad. Sci. 2: 162. 1895. 
This common and widely distributed species has been several 
times described, the earliest name having been assigned to speci- 
mens from Europe. No mention is made of the American plant in 
the description of JZ. alveolaris from southern France. The plant 
was apparently known to Fries under its earliest name in 1821, 
but in 18 38 he redescribed it under the name Favolus europaeus, 
¢ven the genus being different. canadensis was described 
from a single specimen in Hooker's herbarium. The excellent 
description of F. ohiensis was drawn from several specimens sent 
from Columbus, Ohio, by Sullivant. In addition to the names 
listed above, the species has been reported under several others, 
notably F. Boucheanus Kl. (Linnaea, 8: 316. pl. 5. f. 2. 1833) 
and F. alutaceus Berk. & Mont. (Ann, Sci. Nat. Bot. Fh ats 
240. 1849). The former was originally collected by Bouché on 
dead trunks of birch at Lankwitz near Berlin. The latter was 
described from Bahia, Brazil, and probably does not extend even 
into tropical America. Faded specimens of H. a/veolaris, col- 
lected especially in the South during late autumn or winter, 
resemble the Brazilian species in some ways, but authentic plants 
show them to be very distinct. Var. peponinus B. & C. of F. 
Boucheanus was doubtless based on these same faded forms of our 
common species, 
In the exsiccati listed, only American material is considered. 
The species grows upon dead wood, usually fallen limbs, of vari- 
