90 
Journal of Mycology 
[Vol. 9 ' 
Adanson and his genus Striglia, based on the same plate. Sy¬ 
nonymous with Agaricus L. based on Agaricus quercinus L. 
20. Favolus Palis. FI. Owar. i :i. pi. i. 1805.— 
Founded on a single species, F. hirtus Palis. This plant, which 
is commonly known as Hexagonia hirta Palis., recalls the true 
honeycomb-like structure of the hymenium which was originally 
the distinguishing feature of the genus Favolus. 
21. Microporus Palis. FI. Owar. 1 :i2. pi. 43. 1805.— 
Founded on M. perula Palis, and three other species, M. perennis 
(L.), M. fuligineus (Fr.), and M. nummularius (Fr.). . M. 
perula is commonly known as P. xanthopus Fr. 
22. Xylophagus Link, Berk Mag. 3138. 1809.— The 
name was proposed for the section of Merulius called Serpula by 
Persoon in his Synopsis, 496, 1801 and is therefore to be con¬ 
sidered as based upon X. lacrymans (Wulff.) and the four other 
species there listed. In 1825, Persoon proposed the name Xylo- 
myzon for the same group. The name Merulius should be used 
in place of Cantharellus, for a genus of the Agaricaceae, since 
Merulius Hall. (E11. Stirp., Helv. 1:33. 1742), based on species 
now placed in Cantharellus, was taken up by B’oehmer in Lud¬ 
wig’s DeL Gen. 492, 1760, several years prior to the estab¬ 
lishment of the genus Cantharellus. 
The group of plants comprised in the genus Xylophagus do 
not properly belong with the Polyporaceae, so I have proposed for 
them and their allies a new family, the Xylophagaceae, with Xylo¬ 
phagus as the type genus (see Torreya, 3:7, 1903). 
23. Leptopora Rafin. Desv. Journ. Bot. 2:177. 1809.— 
Founded 011 L. nivea Rafin. and two other species. Probably a 
synonym of Poria Pers. or Xylophagus Link, but the identity of 
the species is in doubt. 
24. Phorima Rafin. Desv. Journ. Bot. 2:177. 1809.— 
Founded on P. betulina Rafin, and two other species. Probably a 
synonym of Hexagona Poll, but the identity of the species is in 
doubt. 
25. Hexagona Poll. PI. Nov. 35. pi. 2-3. 1816.— 
Founded on H. alveolaris (DC.), (Favolus europseus Fr.). Per¬ 
soon in Mycol. Eur. 2 :35. 1825 cites this genus twice, spelling 
it Hexagonia. At Kew it is still spelled Hexagona. Although 
the form of the word is objectionable it seems best to use it as 
Pollini first wrote it. 
26. Porothelium Fr. Obs. 2:272. 1818.— Based on P. 
fimbriatum (Pers.) Fr. and P. lacerum Fr. listed in this order. 
According to Massee, this genus properly belongs with the 
Hydnaceae. 
27. Serpula S. F. Gray, Brit. PI. 1:637. 1821.—Founded 
on Serpula lacrymans (Wulf.), the earlier name Merulius of 
Hall being replaced and quoted as a synonym. The name Ser¬ 
pula had previously been assigned by Persoon and by Fries to a 
