49 ON THE BLEACHED WOOD 
very anomalous. ‘The spores are peculiar in their form and very dis- 
tinct from those of other species. 
1. Diplodia fibricola, n. s.; maculis pallidis obsoletisque ; peritheciis 
minutis elongatis; sporis minoribus ellipticis centro subconstrictis. 
Has. On bleached wood amongst the fibres ; on an Elm plank; lat. 
76° 2’, long. 96°; July 5, 1851. On Lombardy Poplar; King's Cliff; 
Nov. 1851. 
Perithecia minute, more or less elongated, following the course of the 
bleached fibres, rather delicate, easily lacerated, either scattered or dis- 
posed in distinet patches, sending off a few fibres from their base. 
Spores minute, -os of an inch long, subelliptie, generally slightly 
constrieted in the centre, pale yellow-brown, uniseptate, or very rarely 
acquiring a second septum. The septum goes quite through the outer 
membrane. 
The perithecia are quite mature in the Arctic specimens, and conse- 
quently the attachment of the spores has not been ascertained. In the 
English specimens I have in one or two instances seen what I believe to 
be articulated sporophores bearing one or two spores; but this requires 
confirmation. The spores are far smaller than in most Diplodia. 
I have given a figure of a single perithecium found in a crack of the 
Arctic piece of Elm, together with the sporidia of some Lichen. It 
belongs to the genus Phoma, but differs from other species in its 
cracked surface. I forbear assigning it a name, as it seems absurd to 
propose a species in so obscure a genus from a single perithecium. 
2. Diplodia óospora, n. s., maculis olivaceis; peritheciis minutis 
elongatis; sporis minoribus obovatis fuscis. i 
Has. On bleached wood of some species of Salix, belonging to the 
section of Sallows. King’s Cliff. Nov. 1851. 
Patches oblong, olive-brown, from the fibres of the mycelium. Peri- 
thecia minute, elongated. Spores minute, obovate, yellow-brown, uni- 
septate, 441.5 of an inch long, ssy broad, much darker than in JD. 
Jibricola. . 
This differs from the foregoing in its dark patches, but more especially 
in its differently shaped, larger, and darker spores, which I have seen - 
attached in one or two instances so as to show that they are really ob- 
ovate. 
- Hf further observation should prove that these species really have 
their sporophores more developed than in normal Diplodia, they will 
