74 



TJie Scottish Naturalist. 



Ramularia Violae sp. n. 



On leaves of Viola sylvatica, at Dalmally near Loch Awe, and 

 at Inveraray. Spots amphigenous, arid, subcircular or con- 

 fluent, sometimes nearly covering a leaf, variegated with 

 small darker markings. Conidia inconspicuous, most easily 

 seen on lower surface of leaves still moist with dew, fusi- 

 form, or subcylindrical with rounded ends, straight, 10-16 

 by 2-3, hyaline, becoming uniseptate, united in short chains 

 of 2 or 3, on erect subclavate, uniseptate, conidiophores, 

 each about 20-25 by 3-4. This comes nearest to R. lactea 

 (Desm.) Sacc. ; but is sufficiently distinct from the latter 

 both in habit and in microscopic characters. It is not un- 

 common in autumn near Aberdeen. 



Ramularia Epilobii (Schn.) 



Usually hypophyllous on undefined spots, at first greyish, then 

 turning brown, often affecting the entire leaf ; conidiophores 

 emerging in clusters, erect, 20-45 by 5, cylindrical, sparing- 

 ly denticulated upwards, usually aseptate, hyaline, passing 

 through yellowish to pale olivaceous ; conidia cylindrical 

 with rounded ends, or sparingly catenulate, usually straight, 

 20-50 by 4-6, hyaline passing into pale olivaceous yellow, 

 usually uniseptate, less often 2-3-septate, not constricted. 

 Common in " Clyde " on Epilobium montanum, and 

 also on E. obscurum. It is common on various Epilobia 

 (E. montanum, E. parviflorum, E. palustre, E. obscurum) 

 in Aberdeenshire and near Montrose, and I have also 

 found it in Orkney. It is followed by a 1 Septoria, but I 

 have not yet found the latter so far developed as to permit 

 of identification. 



In the younger stages of the Ramularia, my specimens often 

 agree with Cercospora montana (Speg.) Sacc so closely as 

 to induce me to think that Saccardo is correct in believing 

 the two to belong to the same species ; but I do not know 

 which name has priority, and therefore employ that given 

 to the more fully developed condition. The fungus pos- 

 sesses so much of the habit of Ramularia that it falls more 

 naturally under that genus than under Cercospora, despite 

 its pale brownish colour. 



