278 FUNGI : PYRENOMYCETES. 



(1.) " Gravem censemus Floristarum errorem has in plantarutn 

 iudigenarum numero habere ; species, quae in planta peregrina 

 tantum observata est et cum hac sine dubio periret, pro indigena neu- 

 tiquam haberi potest. Haec methodus omnes geographicas rationes 

 subvertit, ut regio caldariis et arboreto exotico ornata ex his multiplo 

 plures numeret species quam regio nativa." Fries, Sum. Veg. Scand. 

 p. 378. — There is so much of truth in this opinion, that it would be 

 well in future to distinguish the alien species by some mark in our 

 Floras. I have followed the usual rule, for it would be unwise to 

 omit them until it has been proved that the fungi produced on alien 

 or naturalized plants are identical with those produced on the same 

 plants in their native climates. 



(2.) In the British Flora, ii. 2. p. 110, my species was referred to 

 Sph. byssiseda ; but Mr. Berkeley has since seen the specimens, 

 which belong to Sph. aquila. See also Ann. Nat. Hist. vi. p. 361. 



(3.) Sph. derasa = S. calva, Johnst. Fl. Berw. ii. p. 128. Berke- 

 ley and Broome in Ann. and Mag. N. Hist. Ser. 2. ix. p. 328, pi. 11. 

 fig. 2.5, b. — ^The species had been previously referred to Sph. comata. 

 Brit. Fl. ii. 2. p. 273. 



(4.) The specimens in my collection, which Mr. Berkeley thinks 

 belong to the true Sph. sentina, are on the leaves of the Black 

 Currant. 



(5.) Sph. rumicis = S. lichenoides, var. d. Johnst. Fl. Berw. 

 ii. p. 131. See Berkeley and Broome in Ann. and Mag. N. Hist. 

 Ser. 2. ix. p. 384. 



(6.) D. JoHNSTONi, " maculis minutis orbicularibus ; cellulis 

 concentricis semiliberis, ascis brevibus ; sporidiis obovato-oblongis 

 uniseptatis." Berkeley and Broome in Ann. and Mag. N. Hist. 

 Ser. 2. ix. p. 386.— Plate XI. fig. 1. 



" On the leaves of a small Epilobium, Berwick, Dr. Johnston. — 

 Forming little black spots about a line broad studded with concentric 

 half-free cells with a little round aperture ; there are sometimes a 

 few scattered short stiif brown hairs on the surface, occasionally con- 

 verging over the orifice. Asci short, subcylindrical, generally rather 

 thicker below. Sporidia biseriate, obovate-oblong, at length pale 

 brown, uniseptate.— Dothidea Epilobii is totally different, and there 

 is no other species with which it can be compared. It has almost the 

 habit of a Depazea, or rather of Sphseria Eumicis." Berkeley and 

 Broome. 



(7.) See Berkeley in Ann. Nat. Hist. vi. p. 365. 



(8.) On the leaves of Polygala vulgaris in September. I am 

 indebted to the Rev. M. J. Berkeley for the determination of the 

 species ; and I avail myself of this place to express my grateful sense 

 of the many obhgations I owe to this profound and learned mycolo- 

 gist. Mr. Berkeley has examined, with patient care and kindness, 

 most of my specimens of Fungi ; and he has furnished me with the 

 drawings of those new species which occupy two of the plates of this 

 work. I return him my best and sincere thanks. 



