29 
tacles of parasitic Pycnidia. Their basal cellular tissue is 
brown. ‘The basidia are 00050” to :00066” long, simple, 
linear, or filiform and flexuose as in Dichena rugosa, Fr. The 
stylospores are ‘00033” long, ‘00020” broad ; simple, colour- 
less, oval, pyriform or irregular—frequently containing one 
or more long nucleiform oil-globules, besides other oily or 
granular matter. ‘These pycnidia and their contents have a 
much more fungoid than lichenoid character—especially as 
regards the length and form of the basidia, and the character 
of the stylospores. In my ‘Memoir on Spermogones’ (pp. 
163 & 285, and plate vu, fig. 14—16) I have regarded 
them as probably referable to a parasitic Lecidea, L. Cla- 
doniaria of Nylander (‘ Enumération générale, Supplém., 
p- 339). Neither pycnidia nor spermogonia are, however, 
described by Nylander as belonging to his LZ. Cladoniaria : 
neither apothecia nor spermogonia occur in connexion with 
the Birnam parasite; and I have not seen authenticated 
specimens of Nylander’s L. Cladoniaria. 
2. On Cladonia bellidiflora, Ach. 
Kelly’s Green, Dublin ; collected by Dr. Moore, of Glasne- 
vin, in August, 1853, and sent me by Mr. Carrollin 1858. The 
squamulesof the horizontal thallusof the Cladonia are deformed 
by becoming convex and sub-bullose, the anamorphoses in 
question resembling those of the thallus of Cetraria glauca, 
Parmelia saxatilis,and P. conspersa, produced by the growth 
of L. oxyspora ; similar, moreover, to those immediately before 
described as occurring in Cl. uncialis. In Cl. bellidiflora 
the parasite” is scattered over the whole horizontal thallus : 
generally, however, on separate squamules from those bearing 
apothecia of the Cladonia. Apothecia and pycnidia? of the 
parasite are intermixed, the former being black, discoid 
bodies, the latter minute brown, punctiform conceptacles. 
The apothecia are black throughout; sub-convex on the 
upper surface—like a double convex lens on section—gene- 
rally sub-immersed, seldom sessile, and less seldom altogether 
immersed ; their surface being usually level with that of the 
thallus of the Cladonia. In their young state the parasitic 
apothecia are small, black, flattened verrucarioid cones, which 
1 Vide “Observations on W.Greenland Lichens,” p. 364, plate xlviii, fig. 9. 
2 Further described in my paper on “ New Lichenicolous Micro-Fungi,” 
. 545. 
vic In my ‘Mem. Spermog.’ (p. 164), I refer to them as spermogonta ; 
and my only reason for change of designation is—as I have explained in my 
paper on “ Polymorphism in the Fructification of Lichens” (‘ Quart. Journal 
of Microscopical Science,’ January, 1868)—the form of the contained cor- 
puscles, which are to be regarded as s/ylospores rather than as spermatia. 
