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CRYPTOSPHADRIA MILLEPUNCTATA. 
the same as S. millepunctata, Grev., from the specimens still 
extant), and also Fuckel’s specimen, No. 1800, which in our copy 
is on ash, and identical with Greville’s species ; whilst No. 908, 
which Fuckel quotes under S. millepunctata, Grey., is a species 
which we venture to say Greville never saw. 
Afterwards (1869) Fuckel repeats, in his“ Symbolae” (p. 212), 
the same errors. 
We come now to Saccardo’s “ Sylloge ” (1882), the last and 
most comprehensive work on the Pyrenomycetes yet published. 
Here we are happy to recognize a manifest improvement. (For 
the time we can forget any differences of opinion.) We find in the 
first place Greville’s old generic name restored, and the reasons we 
will not discuss, but the species is also put right, so that Crypto- 
sphceria millepunctata , Grev., is just what he intended it to be, with- 
out quoting Sowerby’s dubious figure of S. corticis, but adding as a 
synonym the Sphceria eunomia of Fries, in which he is doubtless 
justified. During the past fifteen years specimens have been dis- 
tributed on the Continent under Greville’s name, which were not 
his species ; whilst Greville’s species has persistently been issued 
under another name, and we have continued to protest against the 
error, in the full consciousness that we, on this side the Channel, 
must be permitted to know what was the species so common with 
us on the ash, to which Greville assigned a name. In addition 
Cryptosphceria populina (Pers.) is the name under which Saccardo 
records the Sphceria populina of Persoon, with the Sph. corticis of 
Fries as a synonym, at the same time admitting that it is the Valsa 
millepunctata of Nitschke, Fuckel, Karsten, and even of Saccardo 
himself (previously), but not of Greville. If the same care has 
been exercised in other species as in these (and there is no reason 
to suspect otherwise), then the more close our relationship with 
the “ Sylloge ” becomes, the more we shall appreciate its value, 
apart from any question of classification. 
On the Chemical Reaction of the Thallus of Lecanora 
Smaragdula, Wahl. By E. G. Varenne. — In Mr. Leighton’s 
“ Lichen Flora,” the chemical reaction of Lecanora smaragdula , 
Wahl., is symbolized thus : K — C — . In specimens of this 
Lichen met with in the neighbourhood of Penzance, and which 
were parasitical, as it were, on the thallus of rock crustaceous 
Lichens, such as Lecidea petrcea , Lecidea concentrica, &c., the re- 
action clearly is K. yellow, then red, C — . Being anxious for the 
opinion of a Lichenologist of experience in this matter, I re- 
quested Mr. Holmes to test his specimens of L. smaragdula for 
me. Mr. Holmes found the action as described above, K. yellow, 
then red C — . Mr. Holmes’s specimen was an authentic one un- 
doubtedly, having been given to that gentleman by a distinguished 
Lichenologist, Dr. Crombie. 
