614 THE FUNGI WHICH CAUSE PLANT DISEASE 



Conidiophores elongate, septate, nodose, pale brown; conidia 

 lanceolate, 3 to 5-septate, 80-120 x 20 n, smooth. 

 It has been reported on sweet corn from Long Island by Stewart. 

 H. grammeum, H. turcinum and H. incon- 

 spicuum are closely related, possibly identical. 



Johnson ^"' concludes that H. gramineum with 

 its ascosporic stage includes Piricularia grizea, 

 P. oryzse, Helminthsporium oryzae and H. tur- 

 cinum. 

 H. insequalis Sh. 



Sterile hyphse effuse, much branched, dark 

 brown; conidiophores erect, septate, variable 

 in length, 6-8 m in diameter; conidia both ter- 

 ^fK^^if-JT™*"™!^* minal and lateral, more or less curved, 3 to 



tnosponum in- ' ' 



aiquaiis. After 5-celled, thick-walled, brown, 23-32 x 11-14 n. 



Shear. ^ , 



On cranberry. 

 H. hevese Fetch, is on Para rubber; 

 H. these Bernard on tea in India; 



H. iberidis Poll, on Iberis and H. lunaiise Poll, on Lunaria, both 

 in Italy. 



Spondylocladium Martius (p. 609) 



Hyphse creeping, septate; conidiophores erect, simple, ri^d; 

 conidia verticillate, fusoid, usually 3-celled, brownish. 



A small genus. 



S. atrovirens Harz.** 



Conidiophores solitary or clustered, cylindric, septate, dingy, 

 olive or brownish, up to 400 /* high; conidia elongate, ovate, apex 

 narrowed, 5 to 7-septate, concolorous with the conid- 

 iophores, 30-50 X 6-9 II. 



On potatoes this fimgus causes blackish to olive 

 spots soon depressed, 2-3 cm. across, which are 

 beset with small black sclerotia and followed by dry 

 rot. According to Appel & Laubert '^^ the sclerotia 

 develop whorls of conidiophores. The species is ^atroVfrrnl' 

 said to occur in the British Isles, the Continent After Maasee. 

 and in America."* Its sterile mycelium has been described under 

 the name Phellomyces.*^* 



