Shear and Dodge : Patellina, Leptothyrium, Peziza 159 



at maturity is very difficult to determine positively. Whefri 

 packed in the pycnidium before it ruptures the spores sometimes 

 appear to be catenulate. If so it is an evanescent character and of 

 little or no diagnostic value. 



Sporonema quercicolum C. Massal. This was described 

 (1889 a) and figured (1889 b) at the same time as Sporonema 

 diibhim. Examination of type material of this also shows that it 

 is identical with our plant. This was said to differ from 5\ du- 

 bium.'m being argillaceous in color and dehiscing somewhat dif- 

 ferently. Our study of many specimens of different age and 

 condition shows that the color is variable, ranging from clay color 

 through light brown and chestnut brown to black. Old speci- 

 mens are usually darker than younger ones. The dehiscence of 

 the pycnidia at maturity also varies greatly. S. castaneae C. 

 Massal. (1889&), which it was thought might also be a form 

 of the same species, proves upon examination of part of the type 

 to be specifically distinct, having considerably larger and differ- 

 ently shaped spores. This species appears to be identical with 

 Pilidium acerinum Kze. (1823). 



Leptothyrium borzianum F. Tassi (1896). This was found 

 on Jambosa (Eugenia) vulgaris in the Botanical Garden at Siena, 

 Italy. Tassi's figures show clearly the form of the pycnidia 

 which he says are concave or collapsed when dry. The charac- 

 teristic navicular spores borne upon branched conidiophores are 

 also shown. We have seen no authentic specimens of Tassi's plant 

 but we have found typical Sclerotiopsis concava on the same 

 species of Jambosa in the greenhouses of the New York Botan- 

 ical Garden which agree in all respects with Tassi's description 

 and figure and which when cultured gave the typical sporodochia 

 of Hainesia lythri. There seems scarcely any doubt, therefore, 

 that Tassi's species is the pycnidial stage of Pezizella lythri. 



Sclerotiopsis potentillae Oud. (1900). This was found 

 on Potentilla in Hoi'land. Oudemans says this differs but little 

 from S. australasica Speg. except that the spores are 1.5 fi longer. 

 This slight variation in the length of spores is very common even 

 in Spegazzini's own specimens. As the original description of 

 Oudemans' agrees in every respect with Sclerotiopsis concava as 



