72 



The Scottish Naturalist. 



Ascochyta Potentillarum Sacc. 



In leaves of Potentilla Anserina, on the shore of Loch Fyne 

 at St. Catherine's, spots paler, drying up, surrounded 

 with a dark reddish brown border, irregularly rounded or 

 oval ; pycnidia rather scattered, circular or elliptical, 

 depressed, thin; sporules sub fusiform, 10-12 by 3, not con- 

 stricted, hyaline, uniseptate. 



Hendersonia leptospora sp. n. 



,In dead leaves of Phragmites communis on shore of Loch 

 Achray. Pycnidia innate, scattered, ostiole shortly 

 papillate; sporules clavate-fusiform, 10-13 by 2 > pale- 

 brown, triseptate, eguttulate. Seems to come near H. 

 minutissima Sacc, with which, however, I do not venture 

 to regard it as identical. 



Sta^onospora dolosa Sacc. 



In dead culms of Phragmites communis on the shore of Loch 

 Achray. Pycnidia innate, becoming superficial, globular, 

 350-500 in diameter, dark brown ; sporules fusiform, with 

 rounded ends, 50-70 by 9-11, septa 5-6, hyaline, 6-7- 

 guttulate. This is probably a mere variety of S. elegans 

 (Berk.), already recorded (as Hendersonia elegans Berk. 

 Myc. Scot., 113) from "Tay." 



Stagonospora subseriata (Desm.) Sacc. var nova MolinisB. 

 I am disposed to refer a Stagonospora found plentifully in dead 

 leaves of Molinia coerulea at Dalmally near Loch Awe, to S. 

 subseriata as a variety. The description of the species in 

 Saccardo's Sylloge (1H. p. 454) is " Peritheciis erumpenti- 

 bus, 3-5-subseriatis, subinde confluentibus, minutis, nigris, 

 globulosis, poro minuto pertusis ; sporulis fusiformibus 

 oblongis 38-40 x 7, 6-S-nucleatis, 3-6 septatisque, hyalinis." 

 From this type the form on Molinia differs in only unim- 

 portant characters. The pycnidia seem never to be con- 

 fluent in it, and are not very markedly in series, ' though 

 very numerous in a leaf; and the sporules measure 28-35 

 by 6-7, and show usually 4 or 5 septa. 



Septoria Avellanse B. and Br. (No. 1606 in Ann. K.H.) 

 The description is too slight to permit of the ready identifica- 

 tion of this species, being restricted to the words — " Hy- 

 pophyllous ; perithecia circinate, spores fusiform, curved. 



