605 



1897. Dothidea chalyhea, Schw., on dry, denuded wood of 

 Kalmia, and 



1898. Dothidea denigrans, Schw. These two ai-e a mere sterile 

 crust, in the latter with sterile perithecia. 



1899. Dothidea Lauri Bourhonioe, Schw., on leaves of Laurus 

 Bourbonia (Georgia), only small, black, sterile spots. 



1901. Dothidea penicillata, Schw., on scapes of Allium, &c., 

 has the aspect of a Vermicularia, only there are no bristles, nor are 

 there any spores. 



1909. Dothidea pomigena, Schw., on mature apples, apparently 

 the fructigenous form of Fusicladium dendritimim (Wallr.). 



1910. Dothidea GentianoB, Schw., on fading leaves of Genti- 

 ana ochroleuca; sterile perithecia on black spots. Cooke (Grev. XIII, 

 p. 42) finds sporules of a Phoma 8 x 1 /z. 



From 1911-1855, inclusive, all the specimens in Herb. Schw. 

 (except 104], which is Actinonema Hoscea, Lib.) are sterile, inde- 

 terminable things, entirely without fruit of any kind, or at most 

 only stylosporous, so that it would hardly be worth the while to go 

 over them separately. Many of them are mere discolorations of the 

 leaf or stem, or a mere sterile crust, with or without rudimentary peri- 

 thecia. Cooke (see Grev. XIII, pp. 41-44) has examined specimens 

 of these numbers in Herb. Berk, and finds them, as we do, very unsat- 

 isfactory, mostly without fruit. 



DOTHIDELLA, Speg. 



Fungi Argentini, Pugill. Ij Appendix. 



Stroma effused or discoid, thin, black; cells immersed. Asci 

 8-spored. Sporidia ovoid or oblong, uniseptate, hyaline. This diffeif 

 from PhyllachoTa in its uniseptate sporidia. 



D. betiilina, (Fr.) 



Sphceria xylomoides, Fr. in Vetensk. Akad. Handl. 1816, p. 143, 

 Sphcsria atronitens, Holl. in Fr. Scler. Suec. No. 144. 

 Pkyllachora betulina, Fckl. Symb. p. 217. 

 Dothidea betulina, Fr. S. M. II, p. 554. 

 Dothidella betalina, Sacc. Syll, 5256, 

 Exsicc. Fckl. F. Rh. 1015.— Rab. F. E. 1638, 2571.— Thum. F. Austr. 970. 



Stromata numerous, gregarious or thickly scattered, often cover- 

 ing a large part of the leaf, and more or less confluent, small, mostly 

 less than \ mm. broad, irregular in shape, orbicular or angular, slightly 



