HELMINTHOSPOEIUM. 409 



Helminthosporium apiculatum. Corda. 



Tufts black, tomentose, effused, hypliae in fascicles, flexu- 

 ous, unbranched, 120-160 x 8 /i, tip minutely denticulate, 

 brown; conidia elliptic -fusiform, 6-8-septate, brown, 35-40 

 X 10-13 II.. 



Helminihosporium apiculatum, Corda, Ic. Fung., i. p. 13, 

 f. 191 ; Sacc, Syll., iv. n. 1976. 



On wood. 



Helminthosporium scolecoides. Corda. 



Tufts broadly effused, indeterminate, black; bypbae 

 brancbed, angularly bent, rigid, brown, semipellucid ; conidia 

 very long, 8-10-septate, brown, subtorulose, 50-60 /x long, 

 terminal segment pale. 



Helminthosporium scolecoides, Corda, Ic. Fung., i. p. 13, f. 

 180 ; Sacc, Syll., iv. n. 1978. 



On wood, berbaceous stems, &c. 



Helminthosporium foUiculatum. Corda. 



Tufts minute, indeterminate, tomentose ; hypbae lax, 

 brancbed, slender, flexuous, brown, 160-200 X 8-10 fj,; conidia 

 very long, pod-shaped, thickisb, brown, semipellucid, 6-7-sep- 

 tate, cells internally cuboid, 40-60 x 11-14 /x, paler at the 

 ends. 



Helminthosporium foUiculatum, Corda, Ic. Fung., i. p. 13, f. 

 180; Sacc, Syll., iv. n. 1979. 



On rotten wood, stems of species of Brassica, Zea, and 

 various Umbellifers. 



Helminthosporium gongrotrichum. Corda. 



Tufts minute, black, somewhat effused; hypbae simple, 

 curved, rigid, nodulose, at first brown then quite black and 

 opaque ; conidia elliptical, 34—35 //, long, attenuated at both 

 ends, 7-8 septate, brown, pellucid. 



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

 t. iii. f. 192; Sacc, Syll., iv. n. 1981. 



On rotten beech wood, &c. 



Helminthosporium dendroideum. B. & Br. 



Spots indistinct, scattered, very thin, hypbae erect, attenu- 

 ated upwards, septate, with short, lateral, conidia-bearing 

 branchlets ; conidia oblong-fusoid, slightly curved, 8-10-sep- 

 tate, 55-66 X 8-10 fi, brown, basal cell pale. 



