50 
THE GENUS ANTHOSTOMA. 
corresponds with Ilypoxylon in habit and in fructification, but with 
membranaceous instead of carbonaceous perithecia. If it be correct to 
take such a view, then Sphceria gastrina, Fr., will be analogous to the 
pulvinate species of Hy poxy Ion, and Diatrype grandinia, B., to the 
resupinate species. Even as we have dissected the genus, it is 
open to strong objection, as the consequence of adopting an arti- 
ficial standard in the spore. Manifestly, if the species with a mem- 
branaceous perithecium are to be separated from those having a 
carbonaceous perithecium, then the other generic limits should 
correspond, unless it be contended that a feature held to be of 
generic value in one instance is inapplicable in the other. Corres- 
ponding to Daldinia, we have proposed our genus Sarcoxylon, and 
corresponding to Hypoxylon, we now proceed with Fuckelia, but, 
unless we are greatly mistaken, the genus Fuckelia, as represented 
by the subgenus of the same name, includes either more or less 
than its analogue Hypoxylon, by embracing Yalsioid forms, and 
excluding efiused Hypoxyloid forms, such as Diatrype grandinia, B. 
The only escape from such an anomalous position would have been 
in the separation and exclusion of all species which did not con- 
form to the habit of Hypoxylon. That is — having accepted the 
principle that the genus should include only species with simple 
coloured sporidia and membranaceous perithecia, the rest should 
follow on the same plan as adopted for species with simple coloured 
sporidia and carbonaceous perithecia. However we are not pre- 
pared to propose the details of any such arrangement, but shall 
endeavour to make the best of the present. 
SAECOXYLON, Cke. 
Stroma rather fleshy, pallid, or brightly coloured, subglobose, 
pulvinate, or depressed, perithecia submembranaceous, sporidia 
simple, coloured. 
A. Sporoderm smooth. 
1. Saxcoxylon compunctum, Jungh. 1231. 
B. Sporoderm verrucose. 
2. Sarcoxylon lycogaloides, 1342. 
FUCKELIA, Nits. 
In previous communications we have had occasion to commence 
with details of the measurements of the sporidia of species which 
had not previously been published, but in the present case this will 
be avoided, as we have no practical knowledge of the only species 
for which dimensions are not given. 
Exclusions. — The following plants, for reasons already ex- 
pressed in previous communications, are excluded : — 
1133. Anthostoma eterio {B. ^ Br.), wdiich is Hypoxylon 
eterio, B. & Br. 
