NAPICLADIUM, 419 



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



Tufts erumpent, elongated, gregarious, sooty; threads 



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



elliptical, ends somewhat acnte, rough with minute granules, 



pale olive, 30-40 x 10-14 /a. 



Hetero»porium typharum, Cke. & Mass., Grev., xvi. p. 80. 

 On leaves of Tyyha angitsti folia. 



*** 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, eUiptical, minutely 

 warted, pale olive, 25-30 X 8 /i. 



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



On old specimens of Polyporus squamosus. Boletus felleus, 

 Itussula nigricans, &c. 



XAPICLADIUM. 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 resemhling 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. 897.) 



Forming broadly efFused, velvety, blackish-olive patches ; 

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

 50-60 X 7-8 fj., olive ; conidia obclavate, 40-50 x 15-18 /a, 

 1-2-septate, olive. 



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



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

 f. 25. 



On fading leaves of Phragmites communis. 



2 E 2 



