408 FUNGUS-FLORA. 



Helminihosporium delicatulum, Berk., Ann. Nat. Hist., n. 233, 

 t. xiii. f. 20 ; Sacc., Syll., iv. n. 1964. 

 On stems of Umbellifers. 



Helminthosporium inconspicuum. C. & E. 



Forming a very thin, cloud-like stain, hyphae elongated, 

 septate, nodulose, pale brown; conidia lanceolate, at first 

 4-6-nucleolate, then 3-5-septate, 80-120 X 20 /x, epispore 

 thin. 



Helminthosporium inconspicuum, C. & E., Grev., t. 99, f. 19; 

 Sacc., Syll., iv. n. 1969. 



On fading leaves of Indian corn (Zea mays'). 



Var. Britannicum. Grove, Sacc., Syll., iv. n. 1979. 



Effused, brownish, hyphae subflexuous, scarcely nodulose, 

 4 5-septate, pale brown, 160-180 X 10 //,; conidia oblong, 

 diaphanous, brownish endochroma divided then 3-5-septate, 

 60-100 X 18-22 fj.. 



On fading leaves of grass. 



The type has not been met with in Europe. 



ttt Conidia 6- many-septate. 



Helminthosporium macrocarpum. Grev. 



Broadly effused, black with olive or smoke-brown tinge, 

 velvety; hyphae aggregated, subulate, simple or rarely 

 sparingly branched, septate, 350-500 X 15-20 //,; conidia 

 elongato-clavate, 6-9-septate, not constricted at the septa, 

 dingy olive, 50-90 x 15-20 p.. 



Helminihosporium macrocarpum, Grev., Scot. Cr. FJ., t. 148 ; 

 Sacc., Syll., iv. n. 1973. 



On branches and trunks of Carpinus, Quercus, Fraxinus, 

 Castanea, Ulmus, Corylus, Acer, Cirsium, &c. 



Helminthosporium fusiforme. Corda. (fig. 10, 

 p. 397.) 



Effused, blackish-brown, coarsely velvety ; hyphae filiform, 

 waved, 100-140 X 5-6 /*, dirty brown, paler upwards, 

 septate; conidia fusiform, 30-40 x 9-12 /*, 7-9-septate, 

 dingy olive, paler generally at both ends. 



Helminthosporium fusiforme, Corda, Icon. Fung., i. p. 13, 

 f. 194; Sacc., Syll., iv. n. 1974. 



On branches and wood of hazel (Corylus), Eobinia, &c. 



