CHESTNUT BARK DISEASE. 421 
here at present, the handwriting is that of Schwaegrichen, and 
the specimen is an authentic Schweinitzian one. It is probably 
one of a set sent to Hooker, though there is nothing on the 
label to indicate that this was the case. There is a pencil refer- 
ence in another handwriting (apparently Berkeley’s) to ‘Fr El. 
2 p. 73. Versatiles.’ Some ascospores have been found in this 
specimen from which the accompanying drawing has been made. 
They measure 5-7.5 x 2-3 » (average size about 7x2 2). The 
spores are usually one-septate. The septa are indistinct unless 
stained.” 
From Shear’s and Wakefield’s measurements of the spores, 
one can readily see that the specimen in the Kew herbarium 
labeled Sphaeria radicalis is not the species we are considering 
-here under that name, but really the next species, Endothia 
gyrosa. Ina previous publication (9) we stated our belief that 
Schweinitz’s S. radicalis and S. gyrosa represented either the 
two distinct species of Endothia that we now find in the south- 
ern United States or else the conidial and the asco-stage of 
only one of them, most likely S. gyrosa. This Kew specimen 
points to the latter of these two conclusions. It has also been 
the opinion of certain European botanists that these two species 
of Schweinitz were merely synonyms, and identical with the 
form found in Europe, which we call Endothia gyrosa. 
Ellis (N. Am. Pyren. p. 552) in his description included both 
of these species (his spore measurements relating to one and 
his drawings to the other), though most of the specimens he 
referred to are those with linear spores. Farlow (20) was 
the first to really point out the two as distinct species, and 
because of this we (9) previously referred to the linear-spored 
form as Endothia radicalis (Schw.) Farl‘, though Farlow never 
definitely used this combination for the fungus. While at 
present it seems somewhat doubtful if Schweinitz’s Sphaeria 
radicalis really relates to this fungus, we shall retain this com- 
bination, hoping for further light on the subject through future 
investigation. On the other hand, there is little if any doubt 
that Schweinitz’s Peziza cinnabarina does relate to its conidial 
stage, since it is identical, and has Liquidambar for a host, 
a host upon which E. gyrosa has not yet been reported. The 
nomenclature already used for this fungus by different writers 
is‘as follows: 
