134 
HYPOXYLON AND ITS ALLIES. 
154. Hypoxylon glomeratum, Che. 
Pulvinatum, convexum, mox confluens effusumque, atrum, 
crassum, in ligno nigrificato expansum. Peritheciis mediis, glo- 
bosis, leniter vel vix prominulis. Ostiolis punctiformibus. Ascis 
eylindraceis. Sporidiis arcte ellipticis, fuscis (*008 X '003 mm.). 
On decorticated branches. Mauritius. 
Thicker than H. irregulare , and sporidia smaller. Confluent 
masses effused for several inches. 
155. Hypoxylon Beaumontii, B. & C. North Amer. Fungi, No. 864. 
Vais aria ? Beaumontii, Sacc., No. 2848. 
Sporidiis ellipticis, continuis, fuscis. 
On branches of Coniferae. U. States. 
The sporidia are certainly not septate in the original specimens. 
It is an effused Hypoxylon. 
162. Hypoxylon IVEassarae, Be Not. Anthostoma Massares, Sacc. Syll., 
No. 1141. 
Said by Saccardo u Perithecia not carbonaceous,” and hence 
not Hypoxylon , but allied to A, gastrinum , a conclusion in which 
we do not concur. 
163. Hypoxylon prorumpens {Hr.). Sphceria prorumpens, var. ligna- 
tilis, Fries. Scler. Suec., No. 383. 
Erumpens, inaequabile, nigrum, sub-innatum, lineari-extensum. 
Peritheciis irregulariter confluentibus. Ascis eylindraceis. Spo- 
ridiis arcte ellipticis, fuscis (*006 X '002 mm.). 
On naked wood. 
This is clearly not the Eutype prorumpens , Sacc. Syll., No. 642, 
but an evident Hypoxylon. 
Arrangement. — It appears to us that the two main divisions 
into Eu-hypoxylon and Placoxylon are insufficient for facility of 
reference, which, after all, is the practical utility of sub-divisions 
of genera. We therefore propose, after removing the three 
species with a fleshy stroma to the genus Sarcoxylon , to make the 
following distribution of the species of Hypoxylon : — 
I. Macroxylon. — Large indurated irregular forms, with a 
firm and rather fibrous internal substance, of which Hyp. cerebri- 
num , Fee, is the type. 
II. Phylacia. — With an erect, smooth, shining (laccate) 
stroma, of which Hyp. turbinatum , Berk., is the type. 
III. Sph^roxylon. — Including species with a globose or sub- 
globose stroma. 
IV. Clitoxylon. — Including pulvinate species with a more or 
less convex, determinate stroma. 
Y. Placoxylon. — With the stroma more or less widely 
effused. 
YI. Endoxylon. — Stroma more or less immersed in the 
matrix, 
