HYPOXYLON AND ITS ALLIES. 
139 
155. Hypoxylon Beaumontii, B. & 0. 2848. 
156. „ atramentosum, Schwz. 1503. 
VI 
157. 
» 
bipapillatum, B. & C, 1467. 
158. 
)) 
incrustans, P. 1504. 
Endoxylon. 
Stroma more or less immersed. 
159. 
Hypoxylon udum, Pers. 1485. 
160. 
n 
minutum, Ntke. 1486. 
161. 
» 
semi immersum, Ntke. 1487. 
162. 
>> 
Massarae, Not. 1141, 
163. 
prorumpens, Fr. 
Dubi,e. 
164. 
Hypoxylon sclerotoideum, B. & C. 1351. 
165. 
)) 
gangrena, Oes. 1358. 
166. 
}) 
lobatum, Fr. 1499. 
167. 
If 
glomus, B. & C. 1394. 
168. 
ff 
Uraniae, Mont. 1500. 
169. 
11 
exertum, Fr. 1501. 
170. 
11 
exaratum, Schwz. 1506. 
171. 
If 
sphseriostomum, Schwz. 1508. 
172. 
11 
hydnicolum, Schwz. 1471. 
173. 
If 
arecarium, Bory. 1468. 
Two questions of nomenclature must be alluded to here. Hypoxy- 
lon crustaceum (Sow.) Ntke. From the small figure, scarcely an 
inch square of external habit only, Nitschke ventured to call a 
species H. crustaceum (Sow.) without any knowledge of what the 
fruit of Sowerby’s H. crustaceum was. This was certainly not 
justifiable, but he did not venture to cite “ Britain ” as a locality 
for the species. We have no knowledge of Nitschke’s species as 
British at all. It was undoubtedly unknown to Sowerby, and the 
species must not be associated with Sowerby’s name, or figure, at 
all. Saccardo has repeated these errors, and thus made them 
his own. It is similar to the case of Sphceria millepunctata, Grev., 
which for some time continental mycologists persisted in applying 
to the wrong species. 
The other instance is that of Hypoxylon confluens. Whether 
there is sufficient evidence to determine what was, or was not, the 
species of Tode, we have certainly not been in the habit of applying 
the name to H. udum, but as we believe, with considerable 
uniformity, to the species which Nitschke calls H« semi-immersum. 
There is very little doubt that this latter species has generally been 
called Hypoxylon conflueris. Hence, instead of introducing a new 
name and merging Hyp. confluens in 77. udum , it would have been 
more in accordance with botanical rule and practice to have retained 
the name of Hypoxylon confluens for what has been denominated 
