NAPICLADIUM, 419 



Heterosporium typhanim. C. & M. (fig. 9, p. 397.) 



Tufts erumpent, elongated, gregarious, sooty; threads 



erect, mostly simple, septate, nodulose ; conidia 1-3-septate, 



elliptical, ends somewhat acute, rough with minute granules, 



pale olive, 30-40 X 10-14 p. 



Heterosporium typharum, Cke. & Mass., Grev., xvi. p. 80. 

 On leaves of Typha angustifolia. 



*** On Acotyledons. 



Heterosporium epimyces. C. & M. 



Occurring in more or less effused, dense, velvety, olive 

 patches ; threads sparingly furcate, often simple, sparsely 

 septate, pale fuscous ; conidia 1-3-septate, elliptical, minutely 

 warted, pale olive, 25-30 x 8 p.. 



Heterosporium epimyces, Cke. & Mass., Grev., xvi. p. 80. 



On old specimens of Polyporus squamosus, Boletus felleus, 

 Bussula nigricans, &c. 



NAPICLADIUM. Thumen (emended), (fig. 19, p. 397.) 



Fertile hyphae fasciculate, erect, short, not rigid ; conidia 

 rather large, solitary at tip of hyphae, septate, smooth, 

 coloured. 



Napicladium, Thumen, Hedw., 1875, p. 3; Sacc., Syll., iv. 

 p. 481. 



Somewhat resembling Helminthosporium and Brachysporium, 

 but distinguished by the less rigid fertile hyphae, and the 

 large solitary conidia. 



On living or fading leaves. 



Napicladium arundinaceum. Sacc. (fig. 19, p. 397.) 



Forming broadly effused, velvety, blackish-olive patches; 

 hyphae fasciculate, short, thickened at the base, 1-2-septate, 

 50-60 x 7-8 fi, olive ; conidia obclavate, 40-50 x 15-18 /*, 

 1-2-septate, olive. 



Napicladium arundinaceum, Sacc., Syll., iv. n. 2317. 



Helminthosporium arundinaceum, Corda, Ic. Fung., iii. p. 10, 

 f. 25. 



On fading leaves of Phragmitcs commiuiis. 



2 E 2 



