41 
SYNOPSIS PYRENOMYCETUM. 
{Continued from p. 16.) 
Notwithstanding that it is a severe tax upon our fully-occupied 
time, we have endeavoured to proceed with the examination and revi- 
sion of the Pyrenomycetes embodied in Saccardo’s “ Sylloge.” Pre- 
sent observations will be confined to the Dothideacece , although it is 
impossible to complete that family in the present number. First of 
all we will endeavour to clear the way by excluding a number of 
species which it would be folly to retain under the name of Dothi - 
dea, in the hope of some perfect form being found at a very remote 
time. There is no doubt that the genus Dothidea was somewhat 
imperfectly understood by Schweinitz and others, since Diplodia 
and Sphceropsis as well as Dothiora were often included in it. 
A very unprofitable examination of the following authentic 
specimens from Schweinitz in the Berkeley Herbarium may be 
accepted as a sufficient reason for excluding them all from any 
enumeration of the species of Phyllachora : — 
5161. Dothidea orbiculata, Schweinitz. Herb. Berk. No. 9249. 
Asci not seen. Stylospores subcylindrical, *022 x ’003 mm. 
5163. D. Rhois, Schweinitz. Herb. Berk. No. 9202. 
No fruit. 
5167. D. Lauzi-Bozboniae, Schw. Herb. Berk. 9242. 
Imperfect. No fruit. Perhaps Asteroma. 
5168. D. juglandicola, Schw. Herb. Berk. 9271. 
Is a Pilidium. Stylospores strongly arcuate, hyaline, ’012 x 
•003 mm. Perithecia membranaceous. 
5169. D. sassafras, Schw. Herb. Berk. 9270. 
Perhaps an Asteroma, but without fruit. 
5172. D. Rosae, Schw. Herb. Berk. 9276. 
Is the common Asteroma Posce, Fr. 
5173. D. maculans, Schw. Herb. Berk. 9274. 
Only consists of sterile brown spots. 
5174. D. Castaneae, Schw. Herb. Berk. 9275. 
Only discoloured spots. No indication of being a Dothidea in a 
young state. 
5175. D. lauricola, Schw. Herb. Berk. 9273. 
Spots resembling Ectostroma, without fruit. 
5177. D. glycineos, Schw. Herb. Berk. 9255. 
Small, irregular, submembranaceous perithecia, without fruit. 
Either Pliyllosticta or Phoma. 
5178. D. conspuzcata, Berk. Herb. No. 9114. 
Without fruit, probably an immature Asterina. 
5182. D. Bazzingtoniae, Berk, fy Br. Herb. Berk. 9099. 
Small ostiolate perithecia, without fruit. It is probably a 
Phoma. 
4 
